Datasheet AC/DC Drivers Quasi-Resonant Control type DC/DC Converter IC BM1Q011FJ General Description The quasi-resonant controller typed AC/DC converter IC BM1Q011FJ provides an optimum system for all products that include an electrical outlet. Quasi-resonant operation enables soft switching and helps to keep EMI low. With MOSFET for switching and current detection resistors as external devices, a higher degree of design freedom is achieved. This IC built in HV starter circuit, it contributes to low consumption power and high speed start. Because the burst mode is built-in and IC consumption current is low, stand-by power becomes very low. Because BM1Q011FJ series built-in soft-start, burst mode, over current limiter which is cycle-by-cycle, over load protection, over voltage protection, CS Open Protection and so on, BM1Q011FJ are highly safety. Features Quasi-resonant method Built-in 650V tolerate start circuit Low power at the light load (burst operation) Maximum frequency control (120kHz) Frequency reduction function AC voltage correction function VCC pin : under voltage protection VCC pin : over voltage protection Over-current protection (cycle-by-cycle) Output driver 12V clamp circuits Soft start function ZT trigger mask function Over Load protection [Auto-restart] CS pin open protection [Auto-restart] Package SOP-J7S Key Specifications Operating Power Supply Voltage Range: : VCC8.9V to 26.0V VH to 600V Operating Current: Normal0.60mA (Typ.) Burst 0.35mA(Typ.) Max frequency: 120kHz(Typ.) Operate temperature range: -40 to +85 Typical Application Circuit 6.00mm x 4.90mm x 1.65mm (Typ.) (Typ.) (Typ.) Applications Air conditioner, AC adapters, TV such as the products which need the outlet. Figure 1. Application Circuit Product structureSilicon monolithic integrated circuit .www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211114001 This product is not designed protection against radioactive rays 1/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Absolute Maximum RatingsTa=25C Item Symbol Rating Unit Condition Input voltage range 1 Vmax1 -0.3 ~ 30 V VCC Input voltage range 2 Vmax2 -0.3 ~ 6.5 V FB, CS Input voltage range 3 Vmax3 -0.3 ~ 7.0 V ZT Input voltage range 4 Vmax4 -0.3 ~ 15 V OUT Input voltage range 5 Vmax5 -0.3 ~ 650 V VH OUT pin out peak current1 IOH -0.5 A OUT pin out peak current2 IOL 1.0 A ZT pin current1 ISZT1 -3.0 mA ZT pin current2 ISZT2 3.0 mA CS pin current1 ISCS1 -0.45 mA Sink current Allowable dissipation Pd 0.675 (Note1) W o Operating temperature Topr -40 +85 C o Max junction temperature Tjmax 150 C o Storage temperature range Tstr -55 +150 C (Note1) When mounted on 70 mm x 70 mm x 1.6 mm (glass epoxy on single-layer substrate). Reduce to 5.4 mW/C when Ta = 25C or above. Operating ConditionsTa=25C Parameter Power supply voltage range 1 Power supply voltage range 2 Symbol VCC VH Rating 8.926.0 80600 Unit V V Electrical Characteristics (Unless otherwise noted, Ta = 25C, VCC = 15 V) Specifications Parameter Symbol MIN TYP MAX Conditions VCC VH Unit Conditions Circuit current FB=2.0V (Switching operation) FB=0.5V (Switching OFF) VCC=12V , VH: open VCC UVLO = disable Circuit current (ON)1 ION1 - 600 1000 uA Circuit current (ON)2 ION2 - 350 450 uA Circuit current(OFF) IOFF - - 25 uA VH Start current 1 VH Start current 2 ISTART1 ISTART2 0.400 1.00 0.700 3.00 1.000 6.00 mA mA VH OFF current ISTART3 - 10 20 uA VSC 0.400 0.800 1.400 V VUVLO1 VUVLO2 VUVLO3 VCHG1 VCHG2 VOVP1 VOVP2 VOVP3 12.50 7.50 7.70 12.00 26.00 - 13.50 8.20 5.30 8.70 13.00 27.50 23.50 4.00 14.50 8.90 9.70 14.00 29.00 - V V V V V V V V VCC rise VCC fall VUVLO3= VUVLO1-VUVLO2 Starter circuit Stop voltage from VCHG1 VCC rise VCC fall VOUTH VOUTL RPDOUT 10.5 75 12.5 100 14.5 0.30 125 V V k IO=-20mA, VCC=15V IO=+20mA VH pin starter VH start current switched voltage VCC= 0V VCC=10V After releasing VCCUVLO VH pin current VCC pin VCC pin protection VCC UVLO voltage1 VCC UVLO voltage2 VCC UVLO hysteresis VCC charge start voltage VCC charge end voltage VCC OVP voltage1 VCC OVP voltage2 VCC OVP hysteresis OUT pin OUT pin H voltage OUT pin L voltage OUT pin Pull-down resistor www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 2/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ IC control unit Electrical Characteristics (Unless otherwise noted, Ta = 25C, VCC = 15 V) Specifications Parameter Symbol Unit MIN TYP MAX Conditions [ DC/DC converter unit Turn-off] Pull-up resistor of FB pin CS over current voltage 1A CS over current voltage 1B CS over current voltage 2A CS over current voltage 2B Voltage gain1 VFB/VCS Voltage gain 2 VFB/VCS ZT current switched CS 1 ZT current switched CS 2 ZT current hysteresis switched CS voltage CS Leading Edge Blanking time Turn-off time Minimum ON width Maximum ON width RFB Vlim1A Vlim1B Vlim2A Vlim2B 22.5 0.475 0.310 - 30.0 0.500 0.350 0.125 0.088 37.5 0.525 0.390 - k V V V V FB=2.2V (ACSNSL) FB=2.2V (ACSNSH) FB=0.5V (ACSNSL) FB=0.5V (ACSNSH) AVCS1 3.40 4.00 4.60 V/V ACSNSL AVCS2 4.86 5.71 6.57 V/V ACSNSH IZT1 IZT2 0.93 0.82 1.00 0.90 1.07 0.98 mA mA IZTHYS - 0.10 - mA TLEB TOFF Tmin Tmax 30.0 0.250 0.150 0.400 39.0 50.7 us us us us IZT1 IZT2 IZT3 FSW1 FSW2 4 6 8 108 - 14 16 18 120 30 24 26 28 132 - uA uA uA kHz kHz TLEBTOFF [ DC/DC converter unit Turn-on] ZT input current 1 ZT input current 2 ZT input current 3 Max frequency 1 Max frequency 2 Frequency reduction start voltage Frequency reduction end voltage ZT comparator voltage1 ZT comparator voltage2 VFBSW1 1.10 1.25 1.40 V VFBSW2 VZT1 VZT2 0.42 60 120 0.50 100 200 0.58 140 280 V mV mV ZT trigger mask time TZTMASK - 0.6 - us ZT trigger Timeout1 ZT trigger Timeout2 TZTOUT1 TZTOUT2 10.5 3.5 15.0 5.0 19.5 6.5 us us Soft start time1 TSS1 0.35 0.50 Soft start time 2 TSS2 0.70 1.00 Soft start time 3 TSS3 1.40 2.00 Soft start time 4 TSS4 2.80 4.00 FB Burst voltage VBURST 0.42 0.50 FB OLP voltage a VFOLP1A 2.6 2.8 FB OLP voltage b VFOLP1B 2.6 FB OLP detection timer TFOLP 44.8 64 FBOLP stop timer TOLPST 358 512 Latch mask time TLATCH 50 100 * Definition of ACSNS (L : ZT current < IZT1 H : ZT current > IZT1) 0.65 1.30 2.60 5.20 0.58 3.0 83.2 666 200 ms ms ms ms V V V ms ms ms OUT=L, ZT=4.65V OUT=L, ZT=5.00V OUT=L, ZT=5.35V FB=2.0V FB=0.5V ZT fall ZT rise In OUT H ->L, prevent noise Without bottom detection Count from final ZT trigger [DC/DC protection ] www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 3/26 FBOLP detectFB rise FBOLP detectFB fall TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Pin Configuration Table 1 Input-Output PIN Function NO. Pin Name I/O 1 2 3 4 5 6 7 ZT FB CS GND OUT VCC VH I I I I/O O I/O I Function Zero current detect pin Feedback signal input pin Primary current sensing pin GND pin External MOS drive pin Power supply pin Starter circuit pin ESD Diode VCC - GND External Dimensions (TOP VIEW) ZT 1 7 VH FB 2 CS 3 6 VCC GND 4 5 OUT Figure 2. SOP-J7 package external dimensions I/O Equivalent Circuit Diagram Figure 3. I/O Equivalent Circuit Diagram www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 4/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ OSC OSC Block Diagram Figure 4. Block Diagram www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 5/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Description of Blocks (1-1) Starter Circuit VH pin7pin The IC builds in starter circuit (tolerates 650V) to VH pin (8pin). It enables to be low standby power and high speed starting. The operating current is shown in Figure 6. After starting the IC, the idling current ISTART3typ=10uA flows from VH voltage. The loss by the idling current is shown below. ex) power consumption of starter circuit only Vac=100V Power100V*2*10uA=1.41mW Vac=240V Power240V*2*10uA=3.38mW Starting time is decided by VH current and VCC pin capacitor value. The reference value of starting time is shown in Figure 7. For example, VCC pin is charged within about 0.1 sec at CVCC=10uF. When the VCC pin is shorted to GND, the current of ISTART1 flows to (shown in Figure 6). When the VH pin is shorted to GND, the large current flows from VH line to GND. To prevent this, it is needed to insert the resistor (5k~60k) for limiting current between the VH line and 2 the VH pin. When VH pin is shorted to GND, the power of VH /RVH is applied to this resistor, so please decide the resistor value depending on specifications after having confirmed allowable electricity. + FUSE AC Input Diode Bridge - Rvh 7 VH SW1 6 VCC Cvcc + VCCUVLO Figure 5. Starter Block Diagram Start time [ms] VCC Capacitor value - startup time VCC Capacitor value [uF] Figure 6. Start-up Current vs. VCC Voltage *The start up current is flown from VH pin (7Pin). www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Figure 7. Start-up Timeexample 6/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Figure 8 shows operation waveform of start-up. VH Voltage ISTART2 VH input current ISTART1 ISTART3 VUVLO1 VCC(5pin) VSC Switing Set voltage Secondary output A B C D Figure 8. Start-up Waveform A: By inserting to outlet, the VH voltage applies. From this moment, charging to VCC pin starts from the VH pin through starter circuit. At the time, due to VCC < VSC (typ=0.8V), VH input current is limited to ISTART1 by the VCC pin short protection function. B: Because of VCC voltage > VSC (typ=0.8V), VCC short protection is released and the current of the VH input current waveform flows from VH pin. C: Because of VCC voltage > VUVLO1 (typ=13.5V), the start-up circuit stops and VH input current is limited to ISTART3 (typ=10uA) only. Furthermore, for starting switching operation secondary output starts to rise however the VCC pin voltage lowers because the Secondary output is low yet. The falling rate of the VCC is determined by the VCC pin capacitance, the consumption current of the IC and the load current that flows from the VCC pin. (V/t = Cvcc/Icc) D: Because secondary output has risen to specific voltage, the VCC pin is applied from the auxiliary winding and VCC voltage is stabilized. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 7/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (1-2) a case without using VH pin This IC is also possible to start by connecting the start-up resistor to the VCC pin in the open start-up circuit (650V breakdown voltage) of the VH pin. The structure that does not use the recharge function is shown in Figure 9.At start-up (before VCC VULO released), please be careful to set the start-up resistor Rstart shown in Figure 9, because the consumption current IOFF (Max=25uA) flows from VCC pin (6pin). Rstart Figure 9. Application Circuit without using the VH pin How to set the start-up resistance Start-up resistor Rstart shown in Figure 9 is necessary for the IC to start if you do not use the VH pin. If the value of Rstart is small, the standby power is increased and the start-up time becomes shorter. Adversely, if the value of Rstart is big, the standby power is reduced and start-up time becomes longer. When the VCC voltage=12V, the standby current IOFF is 25A (max) and the VCC UVLO voltage VUVLO1 is 14.5V (max). ex The example of start-up resistor Rstart setting Rstart = (VH min - VUVLO1max) / IOFFmax In Vac=100V, if margin is -30%, VH min=100x2x0.7=99V VUVLO1max=14.5V, so Rstart = (99-14.5) / 25A3.38M For an example, with a sufficient margin to 3.38M, the Rstart is set to 2.0M.In case of AC100V, Power consumption in Rstart is below. 2 2 Pd (Rstart) = (VH-VCC) /Rstart = (141V-14.5V) /2.0M = 8.00mW Pd in using start-up resistor is more than in using VH pin. However, about the value of VCC pin capacitance and VCC start-up resistor, please confirm by performing the evaluation of the actual application. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 8/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (2) Start Sequence (Soft start, Light load operation, Auto recovery in over load protection) The start sequence of IC is shown in Figure 10. About each detail, explain in each section. VH(7pin) 13.5V VCC(6pin) VCC=8.5V Internal REF Pull Up 64ms Within 44.8ms 64msec 2.8V FB(2pin) Vout Over Load Normal Load Light LOAD Iout Burst mode Switching Soft Start A BC D E F GH I J K Figure 10. Start Sequence Time Chart A: The voltage is applied to the Input voltage VH pin (7pin). B : VCC pin (6pin) voltage rise, when VCCVUVLO1typ=13.5V, IC starts operating. In the case that protection function is normal condition, the IC starts switching operation. Then the VCC pin voltage drops absolutely by the VCC pin consumption current. In case of the VCC< VCHG1 (typ =8.7V), the starting circuit operates and charges the VCC. After starting to charge, it lasts charging until VCC> VCHG1 (typ =13.0V) C: The IC has a soft start function which regulates the voltage level at the CS pin to prevent a rise in voltage and current. D: When the switching operation starts, the secondary output voltage VOUT rises. After starting switching, it is necessary to set the output voltage to stable the due output voltage within the TFOLP (typ=64ms) period. E: At light load condition, the burst operation starts for keeping power consumption low. F: When it is heavy load, FB pin voltage (2pin) is larger than VFOLP1A (typ=2.8V), because output voltage is down.G: When the condition that FB pin (2pin) voltage is more than VFOLP1A (typ=2.8V) continues for T FOLP (64ms typ), the switching is stopped by the over load protection for TOLPST (typ=512ms). When the FB pin (2pin) voltage becomes to be lower than VFOLP1B, the timer internal the IC T FOLP (64ms typ) is reset. H: When VCC voltage (6pin) is less than VCHG1 (typ=8.7V), the starter circuit starts to operate and charge the VCC pin (6pin) . I : When VCC voltage (6pin) is more than VCHG2 (typ =13.0V), the starter circuit stops to charge to the VCC pin (6pin). J: Same as F. K: Same as G. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 9/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (3) VCC pin (6pin) Protection Function The IC built in VCC UVLO (Under Voltage Protection) function, VCC OVP (Over Voltage Protection) function and VCC charge function which operates when the VCC voltage drops.VCC UVLO and VCC OVP are the function that prevents MOSFET for switching from destroying at the VCC voltage low or high conditions. And the VCC charge function charges in high voltage line from starting circuits and stabilize the secondary output voltage. (3-1) VCC UVLO / VCC OVP Function VCC UVLO is the function monitors the VCC pin voltage and switches ON/OFF of the IC. This function has a voltage hysteresis and it is auto recovery protection type. VCC OVP is also the type. Refer to the operation figure 11. The auto recovery protection function of this IC's VCC OVP stops the switching when the condition that the VCC pin (6pin) voltage is more than VOVP1 (typ=27.5V) continues for more than mask time TSTOP (typ=100us). And it restarts switching when the condition that VCC pin (6pin) voltage is lower than VOVP2 (typ=23.5V). Figure 11. VCC UVLO / OVP Timing Chart A: The VH (7pin) voltage is applied, and the VCC (6pin) voltage starts rising. B: The VCC pin (6pin) voltage > VUVLO1, the VCC UVLO function is released and DC/DC operation starts. C: The VCC pin (6pin) voltage >VOVP1, VCCOVP detects the over-voltage in the IC. D: When the condition that the VCC (6pin) voltage is more than VOVP1 continues for TSTOP (typ =100us), switching is stopped by the VCCOVP function. E: The VCC (6pin) voltage < VCHG1, the VCCOVP function is released and the operation is restarted. F: The high voltage line VH drops. G: The VCC voltage < VUVLO2, VCCUVLO function starts operation and the switching is stopped. H: The high voltage line VH is applied. I: The VCC pin (6pin) becomes more than VUVLO1 and VCCUVLO function operates. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 10/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Regarding capacitor value of VCC pin For stable operation of the IC, please set the capacitor value to 1uF or higher of the VCC pin. When the VCC capacitor terminal is too large, the response of the VCC pin to the Secondary output is slows down. Additionally, if the degree of the transformer coupling is low, since a large surge occurs to the VCC pin, the IC may be destroyed. In this case, it is necessary that a resistor which is from 10 to 100 is attached to the path between the capacitor and diode at the back of the auxiliary winding or the capacitor of the VCC pin is increased. And the fixed number is has to be set the VCC pin surge voltage not to exceed the absolute maximum rating of the VCC pin by evaluating the waveform of the VCC pin. Regarding VCC OVP voltage protection setting method in case of rising Vout (secondary output) The VCC pin voltage is determined by the transformer ratio (Np:Ns) and Vout (Secondary output). Therefore, when the Secondary output becomes large, it is possible to protect the IC by VCCOVP. Setting method of VCCOVP protection is shown below. Vout Np Ns Nb Figure 12. How to Set VCCOVP The VCC voltage is determined by the formula below. VCC voltage = (Vout-VFs)xNb/Ns -VFb (Vout: Secondary output, Nb: Number of auxiliary winding, Ns: Number of secondary winding VFx: Secondary diode VF, VFb: auxiliary winding diode VF) If you want to apply protection when it becomes Secondary output x 1.3, please set the number of turns to be the next formula. 1.3 x (Vout x (Nb/Ns) - VF) > VOVP1 Because VCCOVP protection has a blanking time of TSTOP (typ = 100us), it is not detected for momentary surge noise of the VCC pin. However, VCCOVP is detected when the VCC voltage becomes higher than VOVP1 for the period of more than VSTOP. So it is necessary to check in application evaluation when you set VCCOVP. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 11/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (3-2VCC Recharge Function After the VCC (6pin) voltage > VUVLO1, the IC start to operate. After that, when the VCC pin voltage < VCHG1, VCC charge function operates. Then the IC charges the VCC pin (6pin) from the VH pin through the starting circuits. This operation prevents the IC from the VCC starting errors. After the VCC pin (6pin) is charged and rise to more than VCHG2, the charging is stopped. This operation is shown to Figure 13. Figure 13. VCC pin Charge Operation A: As the VH pin voltage (7pin) rises, the VCC pin (6pin) is started to charge by the VCC charge function. B: The VCC pin (6pin) voltage > VUVLO1, VCC UVLO function is released, VCC charge function is stopped, DC/DC operation start. C: The VCC pin (6pin) voltage is dropped because OUTPUT voltage is low at starting. D: The VCC pin (6pin) voltage < VCHG1, the VCC charge function operates and VCC pin (6pin) voltage rises. E: The VCC pin (6pin) voltage > VCHG2, the VCC charge function stops. F: The VCC pin (6pin) voltage < VCHG1, the VCC charge function operates and VCC pin (6pin) voltage rises. G: The VCC pin (6pin) voltage > VCHG2, the VCC charge function stops. H: The output voltage stops stating operation and the VCC pin is charged from auxiliary winding. Then the VCC pin (6pin) becomes to be stable. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 12/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (4) DC/DC Driver The IC operates in PFM (Pulse Frequency Modulation) mode method. By monitoring the FB pin (2pin), ZT pin (1pin) and CS pin(3pin), the IC supply optimum system for DC/DC operation. The IC controls ON width (Turn Off) of the switching MOSFET by the FB pin (2pin) and CS pin (3pin). The IC also does OFF width (Turn ON) by the ZT pin (1pin). The detail is shown below. OSC (4-1) QR-basic Operations The QR basic block diagram and the basic operation are shown in Figure 14 and 15. Figure 14. DC/DC Operation Block www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 13/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Figure 15. QR Basic Operation About Figure 15 A: The IC detects a bottom signal and outputs SET signal. Then it turns ON the MOSFET. At this moment, a noise occurs at the CS pin because the capacitor between DRAIN and SORCE of MOSFET is discharged. This noise is called Leading Edge. And this IC has an internal filter for this noise (Refer to (4-3)). This filter and delay time make the minimum pulse of the IC 400ns (typ). After that, the current flows to the MOSFET and the voltage (Vcs=Rs*Ip) applies to the CS pin. B: If the CS pin voltage rises to more than the FB pin voltage / Gain (typ=4) or over current detection voltage VCS (typ=0.5V), the IC outputs the RESET signal and turns OUT off. C: It takes delay time Tondelay until the IC turn off from point B. For this time, the maximum electric power increases depending the AC voltage. This IC has the function that restricts the increment (Refer to (4-4)). D: The DRAIN voltage drops because the energy stocked in transformer is discharged to secondary side and there is no energy in it. At this moment, the IC detects a bottom signal but the signal is ignored not to exceed the maximum frequency. Then the auto vibration of the transformer Lp and MOSFET Cds (the capacitor between the DRAIN and SORCE) starts. E: After the specific period passes from the point A and the time which determined by the maximum frequency also passes, the SET signal is outputs if the IC detects a bottom and turns MOSFET on. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 14/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (4-2) Determination of ON WidthTurn OFF ON width is controlled by FB (2pin) and CS (3pin).By comparison between the FB pin voltage divided by AVcs (typ=4) and CS pin voltage, the IC decides ON width. Besides, by comparison with Vlim1 (typ=0.5V) voltage which is generated in the IC, the CS comparator level is changed lineally to be shown in Figure 16 (the bottom side). Then the maximum frequency also changes. The CS pin (3pin) is shared with over current limiter circuit by pulse. The IC changes the maximum blanking frequency and over current limiter level by the FB pin (2pin) voltage. mode1: mode2: mode3: mode4: Burst operation Frequency reduction operationreduce max frequency Max frequency operation (operate at maximum frequency) Over load operationstop the pulse operation detecting the over load condition Y MAX Fsw[kHz] mode1 mode2 mode3 mode4 120kHz 30kHz 0.0V 0.5V 1.25V 2.0V 2.8V X FB [V] Y CS Limiter[V] mode1 mode2 mode3 mode4 Vlim1 Vlim2 0.0V 0.5V 1.25V 2.0V 2.8V X FB [V] Figure 16. relation of the FB pin, over current limiter and maximum frequency The ON width Ton is decided by the CS Limiter level (VCS). . Ton = (Lp*Vcs) / (Vin*RS) Lp: primary inductance value, Vin: VH voltage (Figure 14), RS: Sense resistor (Figure 14) To adjust over current limiter level, the IC switches the soft start function and over current protection at input voltage. In this case, the value of Vlim1 and Vlim2 is changed as below. Soft start Table 2. Over current protection voltage Detail AC=100V AC=230V Vlim1 Vlim2 Vlim1 Vlim2 start0.5ms 0.063V (12%) 0.016V (3%) 0.044V (10%) 0.011V (2%) 0.5ms1ms 0.125V (25%) 0.032V (6%) 0.088V (20%) 0.022V (4%) 1ms2ms 0.250V (50%) 0.063V (12%) 0.175V (40%) 0.044V (9%) 2ms4ms 0.375V (75%) 0.094V (19%) 0.263V (60%) 0.066V (13%) 4ms 0.500V (100%) 0.125V (25%) 0.350V (70%) 0.088V (18%) *(percent) is shown the comparative related value with Vlim1typ=0.5Vin normal operation. The reason that distinguish between AC100V and AC230V is by CS over current protection voltage switch function which is shown to4-4. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 15/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (4-3) LEBLeading Edge Blanking Function When a MOSFET for switching is turned ON, a surge current occurs in cause of a capacitance or rush current. Therefore, when the CS (3pin) voltage rises temporarily, an over current limiter circuit may miss detections. To prevent miss detections, the IC build-in blanking function which mask for TLEB typ=250ns from switching the OUT pin(5pin) from L to H. This blanking function enables to reduce noise filter of the CS pin (3pin). However, when the CS pin noise does not converge less than 250ns, it is needed to attach RC filter to the CS pin shown in Figure 17. Then, a delay time occurs to the CS pin detection by RC filter. Also, even if the filter in not attached, it is recommended that it is attached an Rcs resistor to the CS pin as a surge provision. Rcs recommended resistor value is about 1k. If you would like to filter, please adjust in Ccs for this resistor. Figure 17. a circuit surrounding the CS pin www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 16/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (4-4) CS over Current Protection Switching Function If the input voltage (VH) becomes higher, the slope of L current raises. The switching has a constant delay time, so the maximum allowable power increases for a constant over current limiter depending AC voltage. For this countermeasure, this IC switches the internal over current protection function monitoring the input voltage. In case of high voltage (AC230V), it is needed to set the over current comparator to normal 0.7 times. The IC detects by monitoring the ZT inflow current and switching. When the MOSFET is turns ON, Va becomes minus voltage depending on the input voltage (VH). The ZT pin (1pin) cramps near 0V internal the IC. The way to determine Rzt1, Rzt2 and Czt is below. The block diagram is shown in Figure 18. The graph is also shown in Figure 19 and 20. Izt1 = (VaVzt) / Rz1 Va / Rz1 = VH * Na/Np /Rz1 Rzt1 = Va / Izt1 Va: the auxiliary winding voltage (switching plus/minus) At deciding Rzt1, it should be determined from minus voltage value, and deciding Rzt2, it should be done from plus voltage value. Izt1: the current that flows to the ZT pin Vzt: the ZT pin voltage As the formula, Rzt1 is has to be set to the value that is divided by 1zt (typ=1mA) for the auxiliary winding Va under the AC voltage condition which the IC is going to switch the over current detection level. Secondly, the timing of turning on is has to be set by Czt to operate the ZT pin bottom detection at the moment that the Drain voltage of MOSFET is 0V. Finally, Rzt2 is also has to set the maximum ZT pin voltage is around 1 to 3V for the plus voltage of the auxiliary winding. (The noises are piled up to the ZT pin so the value of maximum voltage has been set considering a margin.) For that, Rzt2 is calculated as below. (In the case of setting in 2V) VZT = VaxRzt2/(Rzt1+Rzt2) < 2V => Rzt2 < 2xRzt1 / (Va-2)=2xRzt1/(Na/Nsx(Vout-VFs)-2) The auxiliary winding voltage Va has to be calculated in the plus voltage at maximum loads. In addition, the CS over current protection switching ZT current has the hysteresis of IZTHYS (typ=0.1mA). 6 NOUT + 12V Clamp Circuit - 1 shot 1 + TimeOut 15 usec 5 usec AND - 7V 100mV /200mV ZT Blanking OUT(H->L) 0.60us OR AND SET POUT S Q NOUT FBOLP_OH AND AND PRE Driver 5 NOUT OR Max frequency control R RESET 30k 2 + - 0.5V + - Timer (64ms) FBOLP_OH Timer stop (512ms) 1M Soft Start 300k 100k FB/4 0.50V - SS SS SS 0.5ms 1ms 2ms SS 4ms + CURRENT SENSE (V-V Change) Normal : x1.0 Leading Edge Blanking 3 4 Figure 18. CS over Current Detection Switched ZT current block diagram www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 17/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ CS Limiter[V] Y Vlim1 Vlim1*0.7 0.9mA 1.0mA Figure 19. FB pin Voltage vs. CS pin Voltage Characteristics X Izt[mA] Figure 20 Izt Current vs Switched CS Voltage Characteristics ex) a setting method Switching between AC100V and AC230V AC100V: 141V42V30% margin AC230V: 325V65V20% margin The winding numbers of transformer are: Np = 100, Na = 15, Ns =20 According to above, when the IC switches the CS detection current between VH: 182 ~ 260V, in case of switching the AC voltage at VH = 214V (AC150V) the minus voltage Va at MOSFET of QR turn on is calculated as below. Va = Vin*Na / Np = 214V*15 / 100 *(-1) = -32.1 Rzt1 = Va / IZT = -32.1V/-1mA = 32.1k According to this, Rzt1 is set to 33k. At this time, according to Rzt2=2x33k/(20/15x19-2)=2.83k, Rzt2 is also set to 3k. Czt is set to the value which turns on MOSFET when the Drain voltage is minimum voltage after having checked the operation in the actual applications. CS Limiter[V] Y Vlim1 Vlim1*0.7 192V 214V X VH[V] Figure 21 CS switching example VH voltage - CS voltage characteristics (4-5) Determination of OFF WidthTurn on The OFF width is controlled at the ZT pin. While the switching is OFF, the IC supplies the electric power which is stored at coils to the secondary output capacitor. After supplying, the DRAIN pin is drops because the current doesn't flow to the secondary side. For that, the voltage of auxiliary winding side also drops. The voltage divided by Rzt1 and Rzt2 applies to the ZT pin (1pin). If the voltage level drops to less than VZT1 (typ =100mV), the IC turns on the OUT pin. To detection the zero current at the ZT pin (1pin), Czt, Rzt1 and Rzt2 makes time constant. However, the bottom time is adjusted by Czt because Rzt1 and Rzt2 needs to be set by the AC voltage correct function (4-3). Toff1=Ls/(Vout+VF)*Is (Toff1 : transformer discharge timeLs : secondary inductance Vout : Secondary output VFsecondary diode forward voltageIssecondary peak current For that, switching frequency is calculated below: switching frequency=1 / {transformer charge and discharge time(Ton+Toff1) + (bottom-1/2) x resonant time } resonance time = 1 / (2xxLpxCds) Lp: primary inductance , MOSFET D-S capacitor : Cds Because a frequency reduction range in light load is restricted shown in Figure 16, bottom detection operates by the frequency which is lower than max frequency function in Figure 16.Additionally, the ZT trigger mask function (4-6) and a ZT timeout function (4-7) are built in IC. www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 18/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (4-6) ZT Trigger Mask FunctionFigure 22 When switching is set from ON to OFF, superposition of noise may occur at the ZT pin. Then, the ZT comparator and ZTOVP comparator are masked for the TZTMASK time to prevent ZT comparator operation errors. In addition, taking a surge withstand pressure into consideration, the ZT voltage set by resistor divided is has to be set within 3V for the auxiliary winding voltage. Figure 22 ZT Trigger Mask Function A: DC/DC OFF=>ON B: DC/DC ON=>OFF then the surge noise occurs to ZT pin. C: Since a noise occurs to ZT pin, the IC masks ZT comparator and ZTOVP comparator detection for TZTMASK time. (4-7-1) ZT Timeout Function1 Figure 23 When the ZT pin voltage is not higher than VZT2 (typ=200mV) for TZTOUT1 (typ=15us) such as start or low output voltage or ZT pin short, the IC turns on MOSFET by force. (4-7-2) ZT Timeout Function2 Figure 23 After ZT comparator detects bottom, when the IC does not detect next bottom within TZTOUT2typ =5us, it turns on MOSFET by force. After ZT comparator detects bottom at once, the function operates. For that, it does not operate at start or at low output voltage. When the IC is not able to detect bottom by decreasing auxiliary winding voltage, the function operates. Figure 23 ZT Timeout Function A: B: C: D: E: F: G: H: I: At starting up, the IC starts to operate by ZT timeout function1 because of ZT=0V. MOSFET turns ON. MOSFET turns OFF. ZT voltage is lower than VZT2 (typ=200mV) by ZT dump decreasing. MOSFET turns ON by ZT timeout fucntion2 after TZT2 (typ=5us) from D point. ZT voltage is lower than VZT2 (typ=200mV) by ZT dump decreasing. MOSFET turns ON by ZT timeout fucntion2 after TZT2 (typ=5us) from F point. ZT pin is short to GND. MOSFET turns ON by ZT timeout function1 after TZTOUT1 (typ=15us). www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 19/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (5) Soft Start Sequence Normally, when the AC voltage is applied, a large current flows to raise the output voltage. This IC has a built-in soft start function to prevent the output voltage and current from large change. This function is reset when the VCC pin (6pin) drops to less than VUVLO2 (typ=8.2V), and it performs at next applying. It operates as below after starting up. (Refer to the article of (4)-1 turn off.) start 0.5ms 0.5ms1ms 1ms2ms 2ms4ms 4ms => Set CS limiter to 12.5% of normal operation. => Set CS limiter to 25% of normal operation. => Set CS limiter to 50% of normal operation. => Set CS limiter to 75% of normal operation. => normal operation (6) CS (3pin) Open Protection If the CS (3pin) is open, to prevent the OUT pin from making a error, the IC builds in the CS (3pin) open protection. When the CS (3pin) is open, the OUT pin (5pin) switching is stopped by the function. (This is auto-recovery) VCCOVP Timeout Bottom det OR POUT AND S Q FBOLP_OH AND 5 OUT PRE Driver NOUT R VREF(4V) 1M CURRENT SENSE (V-V Change) Normal : x1.0 Leading Edge Blanking 3 CS RS Figure 24. CS Open Protection www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 20/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ (8) OUTPUT Over Load ProtectionFB OLP comparator The over load protection is the function that monitors the condition of the secondary output current's over load and fixes the OUT pin (5pin) to Low at an over load condition. At a over load condition, there is no current in a photocoupler so the FB pin (2pin) rise to near 3.7V. When the condition continues for TFOLP typ =64ms, the IC judges this is over load state and the OUT pin (5pin) is fixed to L. If the FB pin (2pin) drops to VFOLP1B (typ =2.6V) within TFOLP (typ =64ms) from the moment that its voltage becomes higher VFOLP1A (typ =2.8V), the over load protection timer is reset. At starting up, the FB pin starts to operate from more than VFOLP1A (typ =2.8V) voltage because it is pull-up by a resistor to internal voltage. For this reason, the starting up time of the secondary output voltage is has to be set within TFOLP (typ =64ms) from starting up. After detecting the over load condition, the IC is stopped for TOLPST (typ =512ms) and the IC operates auto-recovery. At this moment, the IC operates soft start. At stopping, although the VCC voltage drops, the VCC pin voltage keeps more than VUVLO2 because it is charged from starting circuits. FB VFOLP1A VH charge charge charge 64ms 64ms Switching 512ms VUVLO1 VCHG2 VCC 512ms VCHG1 VUVLO2 A B C D E F GH Figure 25. Over Load Protection: Auto-recovery A: When FB voltage is over VFOLP1A, FBOLP comparator detects an over load state. B: When the state A continues for TFOLP (typ=64ms), the IC stops switching by over load protection. C: During stopping switching by over load protection, VCC (6pin) voltage drops. When VCC (6pin) voltage is lower than VCHG, VCC re-charge function operates and the VCC (6pin) voltage is up. D: When the VCC (6pin) voltage is higher than VCHG2 by re-charge function, VCC recharge function is stopped. E: It passes for TOLPST (typ =512ms) from B, the IC starts switching with soft start. F: When over load state continues, the FB (2pin) voltage is over VFOLP1A. When it passes for TFOLP (typ=64ms) from E, the IC stops switching. G: During stopping switching by over load protection, the VCC (6pin) voltage drops. When the VCC (6pin) voltage is lower than VCHG, VCC re-charge function operates and the VCC (6pin) voltage is up. H: When the VCC (6pin) voltage is higher than VCHG2 by re-charge function, VCC recharge function is stopped. (9) OUT (5pin) Voltage Clamp Function For the purpose which protects the external MOSFET, H level of the OUT (5pin) is clamped to VOUTH (typ=12.5V). It prevents gate destruction of MOSFET by raising the VCC (6pin) voltage. (Refer to Figure 23) The OUT (5pin) is pulled-down RPDOUT (typ=100k). 6 12V Clamp Circuit POUT PRE Driver 5 NOUT 3 Figure 26. OUT (5pin) Construction www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 21/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Operation Mode of Protection Circuit Operation mode of protection functions are shown in table3. Table 3. Operation Mode of Protection Circuit Item Protection mode VCC Under Voltage Locked Out Auto recovery VCC Over Voltage Protection Auto recovery (with 100us timer) FB Over Load Protection Auto recovery (delay: 64ms, stop: 512ms) CS Open Protection Auto recovery ZT Over Voltage Protection - VCC Charge Protection Auto recovery Power Dissipation The thermal design should set operation for the following conditions. (Since the temperature shown below is the guaranteed temperature, be sure to take a margin into account.) 1. The ambient temperature Ta must be 85 or less. 2. The IC's loss must be within the allowable dissipation Pd. The thermal abatement characteristics are as follows. (PCB: 70 mm x 70 mm x 1.6 mm, mounted on glass epoxy substrate) 1000 900 800 700 Pd[mW] 600 500 400 300 200 100 0 0 25 50 75 100 125 150 Ta[] Figure 27. SOP-J8 Thermal Abatement Characteristics www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 22/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Operational Notes (1) Absolute maximum ratings Damage may occur if the absolute maximum ratings such as for applied voltage or operating temperature range are exceeded, and since the type of damage (short, open circuit, etc.) cannot be determined, in cases where a particular mode that may exceed the absolute maximum ratings is considered, use of a physical safety measure such as a fuse should be investigated. (2) Power supply and ground lines In the board pattern design, power supply and ground lines should be routed so as to achieve low impedance. If there are multiple power supply and ground lines, be careful with regard to interference caused by common impedance in the routing pattern. With regard to ground lines in particular, be careful regarding the separation of large current routes and small signal routes, including the external circuits. Also, with regard to all of the LSI's power supply pins, in addition to inserting capacitors between the power supply and ground pins, when using capacitors there can be problems such as capacitance losses at low temperature, so check thoroughly as to whether there are any problems with the characteristics of the capacitor to be used before determining constants. (3) Ground potential The ground pin's potential should be set to the minimum potential in relation to the operation mode. (4) Pin shorting and attachment errors When attaching ICs to the set board, be careful to avoid errors in the IC's orientation or position. If such attachment errors occur, the IC may become damaged. Also, damage may occur if foreign matter gets between pins, between a pin and a power supply line, or between ground lines. (5) Operation in strong magnetic fields Note with caution that these products may become damaged when used in a strong magnetic field. (6) Input pins In IC structures, parasitic elements are inevitably formed according to the relation to potential. When parasitic elements are active, they can interfere with circuit operations, can cause operation faults, and can even result in damage. Accordingly, be careful to avoid use methods that enable parasitic elements to become active, such as when a voltage that is lower than the ground voltage is applied to an input pin. Also, do not apply voltage to an input pin when there is no power supply voltage being applied to the IC. In fact, even if a power supply voltage is being applied, the voltage applied to each input pin should be either below the power supply voltage or within the guaranteed values in the electrical characteristics. (7) External capacitors When a ceramic capacitor is used as an external capacitor, consider possible reduction to below the nominal capacitance due to current bias and capacitance fluctuation due to temperature and the like before determining constants. (8) Thermal design The thermal design should fully consider allowable dissipation (Pd) under actual use conditions. Also, use these products within ranges that do not put output Tr beyond the rated voltage and ASO. (9) Rush current In a CMOS IC, momentary rush current may flow if the internal logic is undefined when the power supply is turned ON, so caution is needed with regard to the power supply coupling capacitance, the width of power supply and GND pattern wires, and how they are laid out. (10) Handling of test pins and unused pins Test pins and unused pins should be handled so as not to cause problems in actual use conditions, according to the descriptions in the function manual, application notes, etc. Contact us regarding pins that are not described. (11) Document contents Documents such as application notes are design documents used when designing applications, and as such their contents are not guaranteed. Before finalizing an application, perform a thorough study and evaluation, including for external parts. Status of this document The Japanese version of this document is formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document formal version takes priority www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 23/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Ordering Information B M 1 Q 0 1 1 F J - Package Product name E2 Packaging and forming specification E2: Embossed tape and reel Marking Diagram 1PIN MARK 1Q011 Part Number Marking LOT No. Line-Up Marking Name 1Q011 www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Package SOP-J7S Order name BM1Q011FJ-E2 24/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Physical Dimension, Tape and Reel Information Package Name www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 SOP-J7S 25/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Datasheet BM1Q011FJ Revision History Date Revision 21.Jun.2016 001 Changes New Release www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. TSZ2211115001 26/26 TSZ02201-0F1F0A200180-1-2 21.Jan.2016 Rev.001 Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) intend to use our Products in devices requiring extremely high reliability (such as medical equipment , transport equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property ("Specific Applications"), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM's Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASS CLASSb CLASS CLASS CLASS CLASS 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM's Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in the range that does not exceed the maximum junction temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice-PGA-E (c) 2015 ROHM Co., Ltd. All rights reserved. Rev.003 Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label A two-dimensional barcode printed on ROHM Products label is for ROHM's internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign trade act, please consult with ROHM in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the Products with other articles such as components, circuits, systems or external equipment (including software). 3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the Products, subject to the terms and conditions herein. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice-PGA-E (c) 2015 ROHM Co., Ltd. All rights reserved. Rev.003 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM's Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM's Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an "as is" basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice - WE (c) 2015 ROHM Co., Ltd. All rights reserved. Rev.001 Datasheet bm1q011fj - Web Page Buy Distribution Inventory Part Number Package Unit Quantity Minimum Package Quantity Packing Type Constitution Materials List RoHS bm1q011fj SOP-J7S 2500 2500 Taping inquiry Yes