Datasheet DC Brushless FAN Motor Drivers Three-phase Full-wave Fan Motor Driver BD6346FV General Description BD6346FV is a three phase, sensorless motor 1chip driver with integrated power DMOS MOSFETs. Its feature is sensor-less drive which doesn't require a hall device as a location detection sensor. Furthermore, introducing a PWM soft switched driving mechanism achieves silent operations and low vibrations. Package(s) SSOP-B20 Features Integrated Power DMOS FET driver Sensorless PWM soft switched drive Lock protection and automatic restart DC voltage/direct PWM input ,speed control Current limit Soft-Start function Quick-Start function Rotating speed pulse signal(FG)output UVLO W (Typ.) x D (Typ.) x H (Max.) 6.50mm x 6.40mm x 1.45mm SSOP-B20 Applications Refrigerator, Sever, Desktop, cooling Fan for general consumer equipment Absolute maximum ratings Parameter Supply voltage Power dissipation Operating temperature Storage temperature Output voltage Output Current FG signal output voltage FG signal output current REF current ability Symbol VCC Pd Topr Tstg Vomax Iomax VFG IFG IREF Limit 20 1200*1 -40 to +100 -55 to +150 20 1.2*2 20 10 8 Unit V mW V A V mA mA Input voltage 1 (COM) Input voltage2 (CONT, MIN, SS, OSC, TOSC, SEL) Junction temperature Vin1 Vin2 Tjmax 20 6.5 150 V V C Symbol Limit Unit Vcc Vcont Vmin Fcont 5.5 to 17.0 0 to Vref Voscl to Vref 20 to 50 V V V kHz *1 *2 Reduce by 9.6mW/C, over Ta=25C (on 70.0mmx70.0mmx1.6mm glass epoxy board) This value is not exceed Pd and ASO Recommended operating conditions Parameter supply voltage range Input voltage (CONT) Input voltage (MIN) Input frequency (CONT, OSC=GND setting) Product structureSilicon monolithic integrated circuit This product is not designed for protection against radioactive rays .www.rohm.com TSZ02201-0H1H0B100520-1-2 (c) 2013 ROHM Co., Ltd. All rights reserved. 1/21 17.Jun.2013 Rev.001 TSZ2211114001 Datasheet BD6346FV Pin Configuration(s) Pin description P/No. T/Name Function 1 2 3 GND GND GND GND terminal (signal GND) GND terminal (signal GND) GND terminal (signal GND) Soft-Start capacitor connecting terminal Reference voltage terminal Output duty control terminal Minimum rotating speed setting terminal Output slope current select terminal Motor output U terminal Output current detecting terminal (Motor GND) Motor output V terminal Motor output W terminal Power Supply terminal Motor central tap terminal Oscillating capacitor connecting terminal for synchronous driving Oscillating capacitor connecting terminal for output PWM operation Rotating speed pulse signal output terminal GND terminal (signal GND) GND terminal (signal GND) GND terminal (signal GND) (TOP VIEW) GND 1 20 GND GND 2 19 GND 4 SS GND 3 18 GND 5 6 REF CONT SS 4 17 FG 7 MIN REF 5 16 OSC CONT 6 15 TOSC 8 9 SEL U MIN 7 14 COM 10 RNF SEL 8 13 Vcc U 9 12 W 11 12 13 14 V W Vcc COM RNF 10 11 V 15 TOSC 16 OSC 17 FG 18 19 20 GND GND GND Fig. 1 Pin configuration GND pin is shorted all GND pin (1-3, 18-20) on board Block diagram GND 1 LOCK PROTECT TSD UVLO GND 2 20 GND 19 GND QUICK START GND 3 150 SOFT SWITCH 18 GND Vcl SOFT START & CURRENT LIMIT COMP SS 4 REF 5 SIGNAL OUTPUT REF 17 FG 16 OSC OSC REF TOSC CONTROL CONT 6 15 TOSC LOGIC BEMF DETECT PWM COMP MIN 7 14 COM DET. COMP SEL 8 U 9 DETECT LEVEL PRE DRIVER Vcc Vcc Vcc RNF 10 13 Vcc 12 W 11 V Fig. 2 Block diagram www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 2/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Electrical characteristics(Unless otherwise specified Ta=25C, Vcc=12V) Parameter Circuit current <REF> REF voltage <TOSC> TOSC high voltage TOSC low voltage TOSC Charge current TOSC Discharge current <CONT, MIN> CONT input high voltage CONT input low voltage CONT input bias current CONT input frequency MIN input bias current <OSC> OSC High voltage OSC Low voltage OSC Charge current OSC Discharge current <Current Limit> Current limit voltage <Soft-Start> SS charge current <FG> FG output Low voltage FG output leak current <Lock protection> Lock detect ON time Lock detect OFF time <Output> Output high voltage Output low voltage Icc Min. 3.6 Limit Typ. 6 Max. 8.4 Vref 4.65 5.00 5.35 V Vtosch Vtoscl Ictosc Idtosc 2.3 0.80 -80 40 2.5 1.05 -60 60 2.7 1.20 -40 80 V V A A Vconth Vcontl Icont Fcont Imin 2.8 20 - - 1.0 -1 50 -1 V V A kHz A Vosch Voscl Icosc Idosc 2.3 0.80 -40 20 2.5 1.05 -30 30 2.7 1.20 -20 40 V V A A P.6 P.6 P.6 P.6 Vcl 200 250 300 mV P.7 Icss 1.35 1.9 2.45 A Vss=0V P.7 Vfgl Ifgl - 0.3 - 0.4 10 V A Ifg=5mA Vfg=20V P.5 P.5 Ton Toff 0.5 2.5 1 5 1.5 7.5 s s TOSC_CAP=1000pF - - 0.15 0.09 0.20 0.16 V V Io=-200mA,for VCCvoltage Io=+200mA P.7 P.8 Symbol Vohh Voll Unit Min. Conditions Typ. mA Ref. data P.4 Iref=-2mA P.4 P.4 P.4 P.5 P.5 Vosc=0V Vosc=0V P.6 P.6 About a current item,define the inflow current to IC as a positive notation, and the outflow current from IC as a negative notation. www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 3/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Typical performance curves(Reference data) 10 6 8 100C REFvoltage:VREF [V] Circuitcurrent:Icc[mA] -40C 6 100C 25C -40C 5 25C 4 4 3 2 Operating range Operating range 2 0 0 5 10 15 0 20 10 Supplyvoltage:Vcc[V] Supplyvoltage:Vcc[V] Fig. 3 Circuit current Fig. 4 REF voltage 15 20 3.0 6.0 TOSCH/Lvoltage:VTOSCH/VTOSCL[V] 100C 25C -40C 5.0 REFvoltage:VREF [V] 5 4.0 3.0 2.0 100C 25C -40C 2.5 2.0 Operating range 1.5 100C 25C -40C 1.0 0.5 0 2 4 6 8 10 Outputsourcecurrent:IR EF [mA] 5 10 15 20 Supplyvoltage:Vcc[V] Fig. 5 REF voltage current ability (Vcc=12V) www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 0 Fig. 6 TOSC High/Low voltage 4/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Typical performance curves(Reference data) 0.8 100C 25C -40C 50 0.6 FGlowvoltage:VFG [V] TOSCCharge/Dischargecurrent: ICTOSC/IDTOSC [uA] 100 0 Operating range -50 0.4 100C 25C 0.2 -40C 25C 100C -100 -40C 0.0 0 5 10 15 20 0 2 4 Supplyvoltage:Vcc[V] 6 8 10 FGsinkcurrent:IFG[mA] Fig. 7 TOSC charge/discharge current Fig. 8 FG low voltage (Vcc=12V) 0.8 10.0 8.0 FGleakcurrent:IFG [uA] FGlowvoltage:VFG [V] 0.6 0.4 17V 12V 5.5V 0.2 6.0 4.0 Operating range 2.0 0.0 100C 25C -40C 0.0 0 2 4 6 8 10 FGsinkcurrent:IFG[mA] 5 10 15 20 Supplyvoltage:Vcc[V] Fig. 10 FG leak current Fig. 9 FG low voltage (Ta=25) www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 0 5/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Typical performance curves(Reference data) 0.2 100C 25C -40C 0.0 MIN input bias current : Imin[uA] CONTinputbiascurrent:Icont [uA] 0.2 -0.2 -0.4 -0.6 100C 25C -40C 0.0 -0.2 -0.4 -0.6 -0.8 -0.8 0 5 10 15 SupplyVoltage:Vcc[V] 0 20 10 15 Supply Voltage : Vcc[V] 20 Fig. 12 CONT input bias current Fig. 11 CONT input bias current 3.0 60 100C 25C -40C 2.5 2.0 1.5 40 OSCCharge/Dischargecurrent: ICOSC/IdoscOSC[uA] OS Chigh/lowvoltage:Vosc h/Voscl[V] 5 100C 25C -40C 20 0 -20 100C 25C -40C 1.0 -40C 25C 100C -40 -60 0.5 0 5 10 15 SupplyVoltage: Vc c[V] 20 5 10 15 20 Supplyvoltage:Vcc[V] Fig. 14 OSC charge/discharge current Fig. 13 OSC high/low voltage www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 0 6/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Typical performance curves(Reference data) 400 4 3 Currentlimitvoltage:Vcl[mV] SSchargecurrent:I sscha[uA] 350 2 1 300 250 200 150 100 0 0 5 10 15 0 20 5 10 15 20 Supplyvoltage:Vcc[V] Supplyvoltage:Vcc[V] Fig. 15 SS charge current Fig. 16 Current limit voltage 0.20 0.20 0.15 OutputHivoltage:VOH [V] OutputHivoltage:VOH [V] 100C 25C 0.10 -40C 0.05 0.00 0 50 100 150 200 Outputsourcecurrent:IO[mA] 5.5V 12V 17V 0.10 0.05 0.00 0 50 100 150 200 Outputsourcecurrent:IO[mA] Fig. 17 Output Hi voltage (Vcc=12V) www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 0.15 Fig. 18 Output Hi voltage (Ta=25) 7/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV 0.20 0.20 0.15 0.15 OutputLovoltage:VOL [V] OutputLovoltage:VOL [V] Typical performance curve (Reference data) 0.10 100C 25C 0.05 0.10 17V 12V 5.5V 0.05 -40C 0.00 0.00 0 50 100 150 0 200 100 150 200 Outputsinkcurrent:IO[mA] Outputsinkcurrent:IO[mA] Fig.19 Output Lo voltage (Vcc=12V) www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 50 Fig. 20 Output Lo voltage (Ta=25) 8/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Application circuit example (Constant values are for reference) 1) Vcc control motor variable speed for application ex. Vcc input voltage control motor constant speed , not necessary to set minimum rotation speed. GND GND GND 1 TSD UVLO 2 20 GND 19 QUICK START 3 FG open collector protection Connect a pull-up external resistor GND LOCK PROTECT 150 SOFT SWITCH - GND 18 Vcl SS Soft-Start time setting 0.47F to 4.7F Stable REF for provision 0.1F to REF SOFT START & CURRENT LIMIT COMP 4 5 REF 17 OSC 16 SIG FG 0 to OSC Vcc control, OSC terminal is shorted GND. REF TOSC CONTROL CONT 6 Open input setting 15 LOGIC PWM COMP MIN SIGNAL OUTPUT BEMF DETECT 7 TOSC Sync-Startup time setting Its necessary to choose the best capacitor value for optimum start-up operation 680pF to 2200pF 14 COM DET. COMP MIN terminal is connected REF terminal, invalidate minimum output duty setting. SEL 8 DETECT LEVEL PRE DRIVER to 10k U Select slope current setting RNF 9 Vcc Vcc Vcc 13 12 10 11 Vcc 4.7F to ( ) ( ) Against reverse FAN connector for provision W V Provision for Vcc-rise by kick-back the bypass capacitor, diode must be routed Vcc terminal as near as possible. 0.22 to Detect current to limit motor current, pay attention to wattage. Because large current is present. Absolute Output Voltage 20V Absolute Output Current 1.2A Fig. 21 Vcc control application Control input terminal setting of Vcc control motor variable speed for application In case of Vcc control with OSC terminal is shorted GND, control input terminal (CONT, MIN) is showed in Fig. 22,23. Setting CONT input, under High Voltage.(prohibition:Input is irregular) NG REF CONT Setting Pull-down (Prohibition: torque is OFF) NG Setting Pull-up ( torque is ON ) OK REF REF CONT CONT Setting OPEN (internal resistance Pull-up,torque is ON) OK REF CONT Fig. 22 Vcc control (OSC terminal is shorted GND), CONT terminal setting Setting under REF voltage (prohibition: input unrelated control) NG REF MIN Setting Pull-down (prohibition: test-mode input) NG REF MIN Setting Pull-up ( torque is OFF ) OK REF Setting OPEN (Prohibition:Input is irregular) NG REF MIN MIN Fig. 23 Vcc control application (OSC terminal is shorted GND), MIN terminal setting Pay attention to design board a) IC Vcc, Motor Output, Motor GND line is as wide as possible b) IC GND line is common to other application GND without motor GND. Wire from near the (-) land. c) bypass-capacitor, Diode must be routed Vcc terminal as near as possible. www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 9/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Application circuit example(Constant values are for reference) 2) PWM control motor variable speed for application by PWM duty convert input DC voltage ex. external PWM signal convert DC voltage, control rotation speed for application. Possible to set minimum rotation speed. GND GND Soft-Start time setting GND 1 UVLO 2 20 GND 19 QUICK START 3 FG open collector protection Connect a pull-up external resistor GND LOCK PROTECT TSD 150 SOFT SWITCH - GND 18 Vcl Stable REF for provision SS 0.47F to 4.7F PWMduty convert DC voltage circuit REF 5 0.1F to CONT PWM SOFT START & CURRENT LIMIT COMP 4 REF 17 OSC 16 OSC 15 BEMF DETECT PWM COMP 7 Output PWM frequency setting 100pF to 1000pF TOSC CONTROL 6 SIG FG 0 to REF LOGIC MIN SIGNAL OUTPUT TOSC Sync-Startup time setting Its necessary to choose the best capacitor value for optimum start-up operation 680pF to 2200pF 14 COM DET. COMP SEL Minimum input duty setting 8 DETECT LEVEL PRE DRIVER to 10k U Select slope current setting RNF 9 Vcc Vcc Vcc 10 13 12 11 4.7F to Vcc ( ) ( ) Against reverse FAN connector for provision W V Provision for Vcc-rise by kick-back the bypass capacitor, diode must be routed Vcc terminal as near as possible. 0.22 to Detect current to limit motor current, pay attention to wattage. Because large current is present. Absolute Output Voltage 20V Absolute Output Current 1.2A Fig. 24 PWM duty convert DC voltage application Control input terminal setting of PWM control motor variable speed for application In case of PWM control with OSC terminal is shorted GND, control input terminal (CONT, MIN) is showed in Fig. 25,26.But CONT,MIN terminal setting Pull-up are state of Motor stop. Input variable DC under REF voltage ( torque is ON/OFF ) OK REF Setting Pull-up ( torque is OFF ) OK Setting Pull-dowm ( torque is ON ) OK REF REF CONT CONT Setting OPEN (prohibition:input is irregular) NG REF PWM LPF CONT CONT Fig. 25 PWM control by input DC voltage(OSC terminal is CAP to GND), CONT terminal Setting under OSC High voltage ( torque is ON ) OK REF MIN Setting Pull-down (prohibition:test-mode input) NG Setting Pull-up ( torque is OFF) OK REF REF MIN MIN Setting OPEN (prohibition:input is irregular) NG REF MIN Fig. 26 PWM control by input DC voltage (OSC terminal is CAP to GND), MIN terminal setting www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 10/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Application circuit example(Constant values are for reference) 3) PWM control motor variable speed for application by input pulse signal (direct PWM input) ex. external PWM signal duty control directly rotation speed for application. Its not necessary to set minimum rotation speed. GND GND GND 1 LOCK PROTECT TSD UVLO 2 20 19 QUICK START 3 Soft-Start time setting 150 SOFT SWITCH 18 FG open collector protection Connect a pull-up external resistor GND GND - GND Vcl SOFT START & CURRENT LIMIT COMP SS Stable REF for provision 0.47F to 4.7F REF Input Direct PWM 4 5 0.1F to PWM CONT REF OSC 16 SIG FG 0 to TOSC CONTROL 6 15 BEMF DETECT PWM COMP MIN terminal is connected REF terminal, invalidate minimum output duty setting. 17 OSC Input Direct PWM, OSC terminal is shorted REF LOGIC MIN SIGNAL OUTPUT 7 14 TOSC Sync-Startup time setting Its necessary to choose the best capacitor value for optimum start-up operation 680pF to 2200pF COM DET. COMP SEL 8 DETECT LEVEL PRE DRIVER to 10k U 9 Select slope current setting RNF Vcc Vcc Vcc 13 12 10 11 4.7F to Vcc ( ) ( ) W Against reverse FAN connector for provision V Provision for Vcc-rise by kick-back the bypass capacitor, diode must be routed Vcc terminal as near as possible 0.22 to Detect current to limit motor current, pay attention to wattage. Because large current is present. Absolute Output Voltage 20V Absolute Output Current 1.2A Fig. 27 Direct PWM application Control input terminal setting of PWM control motor variable speed by pulse input for application In case of PWM control with OSC terminal is shorted GND, control input terminal (CONT, MIN) is showed in Fig. 28,29. But CONT terminal setting Pull-up or OPEN, Motor is state of constant rotation speed. Pulse input within CONT input voltage range OK REF Setting Pull-down (prohibition: torque is OFF) NG REF Setting Pull-up ( torque is ON) OK REF Setting OPEN(torque is ON,internal resistance Pull-up) OK REF PWM CONT CONT CONT CONT Fig. 28 PWM control by input pulse signal (OSC terminal is shorted GND), CONT terminal setting Setting under REF voltage (prohibition:input unrelated control) NG REF MIN Setting Pull-down (prohibition: test-mode input NG Setting Pull-up ( torque is ON ) OK REF REF MIN MIN Setting OPEN (prohibition:input is irregular) NG REF MIN Fig. 29 PWM control by input pulse signal (OSC terminal is shorted GND), MIN terminal setting www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 11/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Description of operations 1) Sensorless Drive BD6346FV is a motor driver IC for driving a three-phase brushless DC motor without a hall sensor. Synchronized start-up and BEMF detection driving Synchronized start-up way, when BEMF signal isn't detected for constant time at start-up, synchronized start-up mechanism outputs output logic forcibly by using standard synchronized signal (sync signal) and makes motor forward drive. This assistance of motor start-up as constant cycle is synchronized driving mechanism. Synchronized frequency is standard synchronized signal. Driving mechanism changes to BEMF detection driving after detect BEMF signal. Fig. 30, the timing chart (outline) is shown. FG signal fixed High (masking) during 1.1s (typ.) after Vcc on. start BEMF detect start VCC Voltage U phase voltage V phase voltage W phase voltage Sync. signal (IC internal signal) FG Voltage Synchronized period Synchronized start-up section BEMF detection drive section FG output . fixed High, during 1.1sec (typ.) SS Voltage Soft start section (current limit operation) Fig. 30 Synchronized start-up and BEMF detection driving timing chart Synchronized time (TOSC) The TOSC terminal starts a self-oscillation by connecting a capacitor between the TOSC terminal and GND terminal. It becomes a start-up frequency, and synchronized time can be adjusted by changing external capacitor. When the capacitor value is small, synchronized time becomes short. It is necessary to choose the best capacitor value for optimum start-up operation. For example external capacitor is 1000pF, synchronized time is 96ms (typ.).1000pF is recommended for setting value . Relationship between external capacitor and synchronized time is shown in below. Ttosc[s] = {Ctosc[F] x (|Idtosc[A]| + |Ictosc[A]|) x (Vtosch[V] - Vtoscl[V])} / (|Idtosc[A] x Ictosc[A]|) Tosc [s] = 2000 x Ttosc[s] (ex.) When Ctosc = 1000[pF], TOSC period is nearly 48us, Synchronized time is nearly 96ms. Ttosc[s] = {1000[pF] x (|60[A]| + |-60[A]|) x (2.5[V] - 1.05[V])} / {|60[A] x (-60[A])|} = 48 x 10-6[s] Tosc[s] = 2000 x 48[s] TOSC CapacitorSynchronized time Table (ref. Val) = 96 x 10-3[s] Ictosc TOSC TOSC OSCILLATOR TOSC Sig. X2000 DIVIDER SyncSig. Idtosc TOSC Capacitor Synchronized time (Ctosc) [pF] (Tosc) [ms] 680 65 1000 96 2200 211 Fig. 31 TOSC Capacitor and IC internal circuit www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 12/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Setting of Appropriate capacitor value Appropriate value of synchronized time is differ with characteristic and parameter of motor. Appropriate value decided by start-up confirmation with various capacitor value. Recommend to TOSC_CAP with 1000pF,next confirm to start up with 1200,1500,1700,2000,2200pF,and 870,670,470,330pF,etc. Appropriate capacitor value is decided after confirm maximum start-up NG value and minimum start-up NG value. For example, small BEMF voltage motor tends to small capacitor value. Set capacitor value after confirm sufficiently. Setting TOSC_CAP value range is from 680pF to 2200pF. 1) Sensorless-drive (continuance) PWM soft-switched driving PWM soft-switched driving, When each phase changed, change smoothly each phase current. For purpose, silent and low vibration motor driving. In Fig. 32, the timing charts of the output signals from U,V,W phase as well as the FG terminal is shown with PWM soft-switched driving section. Assuming that a three-slot tetrode motor is used, two pulse outputs of FG are produced for one motor cycle. The three phases are excited in the order of U,V, and W phases. STAGE Position 0 [deg] 60 120 180 240 300 60 360 120 180 240 300 360 U U phase vol. V V phase vol. W phase vol. W FG vol. FG V U U U W V W V U W V U W V U W V W V U U U W V W V U W V U W V U W V W PWM PWM soft-switched driving operation Fig. 32 BEMF detection driving (full-torque) and PWM soft-switched driving timing STAGE Motor U output H H Hi-Z L L Hi-Z Motor Output Motor V output L Hi-Z H H Hi-Z L Motor W output Hi-Z L L Hi-Z H H note) Output pattern proceed in numeric 123 61. H; High, L; Low, Hi-Z; High impedance www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 13/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Description of operations 2) Lock Protection Feature, Automatic Recovery Circuit To prevent passing a coil current on any phase when a motor is locked, it is provided with a function, which can turn OFF the output for a certain period of time and then automatically restore itself to the normal operation. During the motor rotation, an appropriate logic based on the induced electromotive voltage can be continuously given to each phase; on the other hand, when the motor is locked, no induced electromotive voltage is obtained. Utilizing this phenomenon to take a protective against locking, when the induced electromotive voltage is not detected for a predetermined period of time (TON typ. 1.0s), it is judged that the motor is locked and the output is turned OFF for a predetermined period of time (TOFF typ. 5.0s). In Fig. 33, the timing chart is shown. Motor lock Induced Electromotive Voltage detection Detectin Motor unlock Not Detection TO Output ON Detectin TOFF OFF Recover to the normal operation ON FG Fig. 33 Lock protection (Internal counter way) timing chart 3)UVLOUnder voltage lock out circuit In the operation area under the guaranteed operating power supply voltage of 5.5V (typ.), the transistor on the output can be turned OFF at a power supply voltage of 3.9V (typ.). A hysteresis width of 250mV is provided and a normal operation can be performed at 4.15V(typ.). This function is installed to prevent unpredictable operations, such as a large amount of current passing through the output, by means of intentionally turning OFF the output during an operation at a very low power supply voltage which may cause an abnormal function in the internal circuit. About turning off a output voltage at UVLO, It becomes a OFF mode. (Upper MOS FET and Under MOS FET are turned OFF.) www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 14/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Description of operations 4)PWM speed control Rotation speed change by Motor output (U,V,W ) PWM duty., PWM operation are in below two ways. a) OSC terminal connect CAP to GND, DC voltage input to CONT terminal, MIN terminal. b) OSC terminal is shorted GND, Pulse signal input to CONT terminal. STAGE Position 0 [deg] 60 120 180 240 300 360 60 120 180 240 300 360 U phase vol. U V phase vol. V W phase vol. W V U U U W V V W U W V U W V U W V PWM PWM soft-switched driving W V U U U W V W V U W V U W V U W V W PWM PWM speed control Fig. 34 BEMF detection driving (PWM control) and PWM soft-switching timing chart a) PWM control, OSC terminal connect CAP to GND, DC voltage input to CONT terminal, MIN terminal. As shown in Fig. 36, to change the output ON time, a DC input voltage from TH terminal is compared to the triangle wave produced by the OSC circuit. MIN terminal is use to set the minimum rotational speed. ON time is determined by either CONT terminal voltage or MIN terminal voltage, whichever is lower. OSC voltage > CONT voltage (MIN voltage): PWM output phase ON OSC voltage < CONT voltage (MIN voltage): PWM output phase OFF REF CONT MIN OSC 5.0V 2.5V 1.05V 0.0V GND REF REF High U_vol. OSC Low OSC REF PWM PWM COMP V_vol. PWM COMP W_vol. High Middle Low Disable LPF High CONT MIN Direct PWM Low Motor Motorout out ON Full Motor torque Fig. 35 DC input application Min. Zero Fig. 36 DC input PWM control timing chart (ex. (U, V, W) = (L, M, H)) Resistor divider of the internal regulator (REF) terminal equal to typ. 5.0V) generates OSC high and low voltage level of typically 2.5V and 1.05V respectively, and the ratio of those voltages is designed not to fluctuate easily. When the input voltage at TH terminal is constant, the effect of OSC H/L voltage fluctuation is large. However, an application can be made which is not easily affected by the fluctuation of the triangular wave by generating CONT voltage from REF. For application that requires high precision, determine the value with sufficient margin after taking full consideration of external components. It should be detected constant value with margin for application of more severe precision. Output frequency setting The PWM Frequency (Fosc) in which the motor is operated is set according to the capacitor value (Cosc) connected to OSC terminal. Fosc[Hz] = (|Idosc[A] x Icosc[A]|) / {Cosc[F] x (|Idosc[A]| + |Icosc[A]|) x (Vosch[V] - Voscl[V])} (ex.) When Cosc is 330pF, the PWM output frequency is 31kHz. Fosc[Hz] = {|30[A] x (-30[A])|} / {330[pF] x (|30[A]| + |-30[A]|) x (2.5[V] - 1.05[V])} = 31 x 103[Hz] www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 15/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Description of operations 4) PWM speed control (continuance) b) PWM control: OSC terminal is shorted GND, Pulse signal input to CONT terminal. In Fig. 38, PWM control, pulse signal input to CONT terminal. Motor output PWM duty change by input pulse signal duty. MIN terminal should be pulled up REF terminal. REF MIN 5.0V 2.5V CONT 1.05V REF 0.0V GNDOSC REF High OSC U_vol. OSC Low Disable REF PWM COMP PWM High Middle V_vol. Low CONT PWM COMP MIN High W_vol. Direct PWM Low Motor output ON Full Fig. 37 Input pulse application Motor torque Zero Fig. 38 Input pulse PWM control timing chart (ex. (U, V, W) = (L, M, H)) 5)Current limit A current passing through the motor coil can be detected on the output current detection resistance to prohibit a current flow larger than a current limit value (motor output off).The current limit value is determined by setting of the IC internal limit(Vcl) :250mV (typ.),and the output current detection resistance value using the following in below equation. Io[A] = Vcl[V] / R1[] PR[W] = Vcl[V] x Io[A] = 250[mV] / 0.33[] = 250[mV] x 0.758[A] =0.758[A] = 0.19[W] Vcc U When no-use current limit function, RNF terminal is shorted GND. Connect detect current resistance(current limit Enable) OK V W Open setting (prohibit,motor GND terminal) NG GND short setting (current limit Disable) OK - R1 Io RNF Motor large current GND line Vcl SS RNF RNF RNF C1 Icss IC small signal GND GND line Fig. 39 Current limit function, RNF terminal setting SOFT START & CURRENT LIMIT COMP Fig. 40 small signal and large current GND line separate In Fig. 40, IC small signal GND line should be separated Motor large current GND line connected R1.Same as soft start Capacitor.(P.4 Pay attention to design board(b)) item reference) 6)Soft start To prevent lush current, slowly up to rotation speed, when motor start in VCC on, quick start, restart lock detect on etc. Soft start time set by SS terminal connected CAP to charge current. No use soft start, SS terminal set open. 1uF is recommended for setting value at first, or 0.47uF-4.7uF. Connect capacitor (Softstart Enable) OK Open setting (Softstart Disable) OK SS SS Fig. 41 Soft start function, SS terminal setting www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 16/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Description of operations 6) Soft start (continuance) In Fig. 40, SS terminal charge current (Icss) is 1.9uA (typ.), Set SS terminal connect Capacitor (C1) and cut motor output current (Icut), lead to that current time(Tss) in below equation. Icss1 is reduced 1/10 SS terminal charge current (Icss) in internal IC. Tss[s] = (C1[F] x Icut[A] x R1[]) / Icss1[A] (ex.) Assuming that C1 = 1.0[F], Icut = 0.8[A], R1 = 0.1[] then, soft-start time is 421ms Tss[s] = (1.0[F] x 0.8[A] x 0.1[]) / (1.9/10)[uA] = 421x 10-3[s] ON Vcc Softstart capacitor discharge time typ. 1.0ms Current limit l Motor Output current Softstart capacitor discharge time typ. 1.0ms Tss Tss OFF Io Icut 0A VCC on VCC on Fig. 43 Characteristic of motor output current at no soft-start setting Fig. 42 Characteristic of motor output current at soft-start setting 7) Quick start When torque off logic is inputted by the control signal over fixed time (80us), the lock protection function becomes off. And the motor could restart quickly at the timing of control signal in input. ON torque order OFF Enable Lock protection Internal signal Disable typ. 80s CONT or MIN torque Quick start stand-by Motor Output ON duty 0% Tss Fig. 44 torque order and quick start, timing chart 8) Select of drive current slope By changing two steps PWM soft-switching section in SEL terminal, can adjust each phase slope at motor driving. SEL terminal pull down resistance internal IC.SEL terminal is to pull-up REF terminal, SEL input signal is high. When SEL terminal pull up REF terminal, PWM soft-switching section is more wide to smoothly current slope than SEL terminal OPEN, BEMF detection section is more narrow. Please select to fit application. Open setting (IC internal Pull-up setting resistance pull-down, low input) (High input) OK OK REF SEL REF SEL Fig. 45 Slope of drive current, SEL setting Position [deg ] 0 60 120 180 240 300 360 0 60 120 180 240 300 360 U phase v ol. V phase v ol. W phase v ol. Sof t-switching PW M operation Fig. 46 SEL open, drive waveform www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Fig. 47 SEL pull-up, drive waveform 17/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Safety measure 1) Reverse connection protection diode Reverse connection of power results in IC destruction as shown in Fig. 48. When reverse connection is possible, reverse connection protection diode must be added between power supply and VCC. After reverse connection destruction prevention Reverse power connection In normal energization VCC VCC VCC Circuit block Circuit block I/O PIN GND Circuit block I/O PIN GND I/O PIN GND Large current flows Internal circuit impedance is high Thermal destruction Amperage small Fig. 48 Flow of current when power is connected reversely No destruction 2) Measure against VCC voltage rise by back electromotive force Back electromotive force (Back EMF) generates regenerative current to power supply. However, when reverse connection protection diode is connected, VCC voltage rises because the diode prevents current flow to power supply. ON Phase switching ON ON ON Fig. 49 Vcc voltage rise by back electromotive force When you use reverse connection protection diode, Please connect Zenner diode, or capacitor. Do not exceed absolute maximum ratings Vcc=20V. (A)Capacitor (B) Zenner diode ON (C) Capacitor & Zenner diode ON ON ON ON ON Fig. 50 Measure against Vcc voltage rise 3) Problem of GND line PWM switching Do not perform PWM switching of GND line because GND terminal potential cannot be kept to a minimum. 4) FG output FG output is an open drain and requires pull-up resistor. Adding resistor R1 can protect the IC. An excess of absolute maximum rating, when FG output terminal is directly connected to power supply, could damage the IC. MotorUnit Vcc Motor driver Controler driver M FG GND Protection resistor SIG input Pull-up resistor connector prohibit Fig. 51 GND line PWM switching prohibited www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 18/21 Fig. 52 Protection of FG terminal TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Power dissipation Power dissipation (total loss) indicates the power that can be consumed by IC at Ta=25C (normal temperature). IC is heated when it consumes power, and the temperature of IC chip becomes higher than ambient temperature. The temperature that can be accepted by IC chip depends on circuit configuration, manufacturing process, etc, and consumable power is limited. Power dissipation is determined by the temperature allowed in IC chip (maximum junction temperature) and thermal resistance of package (heat dissipation capability). The maximum junction temperature is in general equal to the maximum value in the storage temperature range. Heat generated by consumed power of IC is radiated from the mold resin or lead frame of package. The parameter which indicates this heat dissipation capability (hardness of heat release) is called heat resistance, represented by the symbol ja[C/W]. This heat resistance can estimate the temperature of IC inside the package. Fig. 53 shows the model of heat resistance of the package. Heat resistance ja, ambient temperature Ta, junction temperature Tj, and power consumption P can be calculated by the equation below: ja = (Tj - Ta) / P [C/W] Thermal derating curve indicates power that can be consumed by IC with reference to ambient temperature. Power that can be consumed by IC begins to attenuate at certain ambient temperature. This gradient is determined by thermal resistance ja. Thermal resistanceja depends on chip size, power consumption, package ambient temperature, packaging condition, wind velocity, etc., even when the same package is used. Thermal derating curve indicates a reference value measured at a specified condition. Fig. 54 shows a thermal derating curve (Value when mounting FR4 glass epoxy board 70[mm]x70[mm] x1.6[mm] (copper foil area below 3[%])) 1200 900 Pd[mW] ja = (Tj - Ta) / P [C/W] jc = (Tj - Tc) / P [C/W] ja=104.2 [C/W] 600 300 0 25 50 75 100 125 150 Ta[ C] *Reduce by 9.6mW/ over 25 On 70.0mmX70.0mmX1.6mm glass epoxy board Fig. 53 Thermal resistance Fig. 54 Thermal derating curve Equivalent circuit ( resistor is reference value ) 1) Vcc,GND terminal 2) CONT terminal 3) MIN terminal REF 4) SEL terminal REF REF Vcc 200k 10k CONT 12k MIN GND 6) OSC,TOSC terminal Vcc 10k 1k 1k 5) REF terminal SEL 7) SS terminal 200k 8) U,V,W,RNF terminal Vcc Vcc Vcc 40k REF 1k 40k 1k 62k SS 30 U V W RNF OSC, TOSC 9) COM terminal 10) FG terminal Vcc COM 2k www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 10 FG 19/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Operational Notes 1) Absolute maximum ratings An excess in the absolute maximum rations, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices, such as fuses. 2) Connecting the power supply connector backward Connecting of the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply lines. An external direction diode can be added. 3) Power supply line Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor characteristics have no problem before determine a capacitor value. (When applying electrolytic capacitors, capacitance characteristic values are reduced at low temperatures) 4) GND potential It is possible that the motor output terminal may deflect below GND terminal because of influence by back electromotive force of motor. The potential GND terminal must be minimum potential in all operating conditions, except that the levels of the motor outputs terminals are under GND level by the back electromotive force of the motor coil. Also ensure that all terminals except GND and motor output terminals do not fall below GND voltage including transient characteristics. Malfunction may possibly occur depending on use condition, environment, and property of individual motor. Please make fully confirmation that no problem is found on operation of IC. 5) Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions. 6) Inter-pin shorts and mounting errors Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any connection error or if pins are shorted together. 7) Actions in strong electromagnetic field Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to malfunction. 8) ASO When using the IC, set the output transistor so that it does not exceed absolute maximum rations or ASO. 9) Thermal shut down circuit The IC incorporates a built-in thermal shutdown circuit (TSD circuit). Operation temperature is 175C (typ.) and has a hysteresis width of 25C (typ.). When IC chip temperature rises and TSD circuit works, the output terminal becomes an open state. TSD circuit is designed only to shut the IC off to prevent thermal runaway. It is not designed to protect the IC or guarantee its operation. Do not continue to use the IC after operation this circuit or use the IC in an environment where the operation of this circuit is assumed. 10) Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Always turn the IC's power supply off before connecting it to or removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps as an antistatic measure. Use similar precaution when transporting or storing the IC. 11) GND wiring pattern When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns, placing a single ground point at the ground potential of application so that the pattern wiring resistance and voltage variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change the GND wiring pattern of any external components, either. 12) Capacitor between output and GND When a large capacitor is connected between output and GND, if Vcc is shorted with 0V or GND for some cause, it is possible that the current charged in the capacitor may flow into the output resulting in destruction. Keep the capacitor between output and GND below 100uF. 13) IC terminal input When Vcc voltage is not applied to IC, do not apply voltage to each input terminal. When voltage above Vcc or below GND is applied to the input terminal, parasitic element is actuated due to the structure of IC. Operation of parasitic element causes mutual interference between circuits, resulting in malfunction as well as destruction in the last. Do not use in a manner where parasitic element is actuated. 14) In use We are sure that the example of application circuit is preferable, but please check the character further more in application to a part that requires high precision. In using the unit with external circuit constant changed, consider the variation of externally equipped parts and our IC including not only static character but also transient character and allow sufficient margin in determining. status of this document The English 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) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 20/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 Rev.001 Datasheet BD6346FV Physical Dimension Tape and Reel Information SSOP-B20 <Tape and Reel information> 6.5 0.2 11 1 Tape Embossed carrier tape Quantity 2500pcs Direction of feed 0.3Min. 4.4 0.2 6.4 0.3 20 E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 10 1.15 0.1 0.1 0.1 0.15 0.1 0.1 0.65 0.22 0.1 1pin (Unit : mm) Reel Direction of feed Order quantity needs to be multiple of the minimum quantity. Marking Diagram SSOP-B20 (TOP VIEW) B D 6 3 4 6 Part Number LOT Number 1PIN Mark www.rohm.com (c) 2013 ROHM Co., Ltd. All rights reserved. TSZ2211115001 21/21 TSZ02201-0H1H0B100520-1-2 17.Jun.2013 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 bd6346fv - Web Page Buy Distribution Inventory Part Number Package Unit Quantity Minimum Package Quantity Packing Type Constitution Materials List RoHS bd6346fv SSOP-B20 2500 2500 Taping inquiry Yes