AP1201 Single-Channel Power Distribution Switch Features General Description The AP1201 series are integrated high-side power switch with enable, flag functions and adjustable current-limit 0.7A to 1.25A, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The AP1201 series support the following USB requirements: each switch channel supplies up to 700mA as required by USB downstream devices; the switch's low on-resistance meets USB voltage drop requirements; fault current is limited to typically 900mA~1.25A; and a flag output is available to indicate fault conditions to the local USB controller. Soft start eliminates the momentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications. Additional features include thermal shutdown to prevent catastrophic switch failure from high-current loads, under voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present, and 3.3V and 5V logic compatible enable inputs. - 100m typical on-resistance - 2.7V to 5.5V input voltage - Adjustable current-limit 0.7A to 1.25A (AP1201A/C) - Fixed current-limit (1.25A) for AP1201B - Fault flag with internal delay circuit - 1A typical off-state supply current - 65A typical on-state supply current - Output can be forced higher than input (off-state) - Thermal shutdown - 2.4V typical under voltage lockout (UVLO) - Slow turn-on (soft-start) and fast turn-off - Enable Active-High or active-Low - SOT23-5L, SOT23-6L and SOT89-5L packages Applications - USB Power Switch Battery-charger circuits Hot plug-in power supplies Pin Assignments 5 IN OUT 1 GND 2 AP1201A EN 3 Pin Descriptions EN 3 SOT23-5L GND 2 EN 74 FLG SOT23-5L 5 OUT AP1201A SET 3 Name GND 2 AP1201B 74 SET IN 1 5 IN OUT 1 IN 1 GND GND 2 74 EN GND GND 74 EN IN SOT89-5L OUT 1 GND 2 AP1201B FLG 3 SOT89-5L FLG 5 OUT 6 IN AP1201C EN 3 OUT 5 SET SET 74 FLG SOT23-6L Descriptions Enable: Logic-compatible Enable input. (H: active high, L: active low). Do not float. Fault Flag: Active-low, open-drain output. Indicates over current, UVLO, and thermal shutdown. Ground: Supply return. Supply Input: Output MOSFET drain. Also supplies IC's internal circuitry. Connect to positive supply. Switch Output: Output MOSFET source. Typically connect to switched side of load. Current limit set input. A resistor pull high to set current-limit value (A, C type only). This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 0.4 1/9 Feb 10, 2004 AP1201 Single-Channel Power Distribution Switch Ordering Information AP1201 X X X X X Power Switch Current & FLG Enable Package Lead Free Packing A: Adj I ,w/o FLG B: 1.5A fix,w FLG C:Adj I,w FLG L: Active-Low H: Active-High W5 : SOT23-5 W6 : SOT23-6 Y : SOT89-5L Blank : Normal L : Lead Free Package Blank: Tube A : Taping Block Diagram OUT Driver EN Current Limit Charge Pump Thermal Shutdown CS UVLO Power N-MOSFET FLG IN SET Absolute Maximum Ratings (Note 1) Symbol VIN VFLG IMAX VOUT VEN TS TLEAD VESD Parameter Supply Voltage Fault Flag Voltage Maximum Continuous Current Output Voltage Control Input Storage Temperature Lead Temperature ESD (HBM) Rating, (Note 2) Anachip Corp. www.anachip.com.tw Rating Unit +7 +7 1.5 +7 -0.3 to +15 -65 to +150 260 4 V V A V V oC oC KV Rev.0.4 2/9 Feb 10, 2004 AP1201 Single-Channel Power Distribution Switch Operating Ratings (Note 3) Symbol Parameter VIN TA Supply Voltage Ambient Operating Temperature PD JC SOT89-5, SOT23-5, SOT23-6 SOT89-5 SOT23-5, SOT23-6 JC Rating Unit +2.7 to +5.5 -40 to +85 V oC Internal Limited oC/W oC/W 100 300 Electrical Characteristics (Under Operating Conditions) Vin=+5V;TA=25oC; unless noted. Symbol ICC VIT IEN CEN RDS(ON) TOND Tr TOFFD Tf ILEAK ILIM TTS RFO tD IFOH UVLO Parameter Supply Current Enable Input Threshold Enable Input Current Enable Input Capacitance Switch Resistance Output Turn-On Delay Output Turn-On Rise Time Output Turnoff Delay Output Turnoff Fall Time Output Leakage Current Current-Limit RLOAD=1 Short-circuit Current Adj Current Limit Typical Value Over-temperature Shutdown Threshold Error Flag Output Resistance FLG Output Delay Time Error Flag Off Current UVLO Threshold Conditions Switch off, OUT = open (Note 4) Switch on, OUT = open (Note 4) low-to-high transition(Note 4) high-to-low transition(Note 4) VEN =0V to 5.5V Min. Typ. Max. Unit 0.1 1 A 65 110 A 1.7 2.4 V 0.8 1.4 -1 0.01 1 100 30 VIN =5V, IOUT =500mA RL =10 RL =10 0.75 RL =10 RL =10 1 0.15 V 1 A pF m s 120 ms 20 AP1201B AP1201B 1.0 -- 1.25 1.25 10 1.8 -- s s A A A AP1201A/C 0.7 -- 1.25 A TJ increasing 140 oC TJ decreasing VIN = 5V, IL = 10mA VIN = 3.3V, IL = 10mA 130 10 15 2 0.01 2.5 2.3 oC 1 VFLAG = 5V VIN = increasing VIN = decreasing 25 40 5 1 ms A V V Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Note 3. The device is not guaranteed to function outside its operating rating. Note 4. Off is VEN0.8Vand on is VEN2.4V for the AP1201X-H. Off is VEN2.4V and on is VEN0.8V for the AP1201X-L. The enable input has approximately 200mV of hysteresis. See control threshold charts. Anachip Corp. www.anachip.com.tw Rev.0.4 3/9 Jan 28, 2004 AP1201 Single-Channel Power Distribution Switch Typical Application Circuit Power Supply 3.3V 5V AP1201C Downstream USB Ports IN D+ DVBUS SET 0.1uF OUT FLG 0.1uF 33uF GND EN USB Control GND Test Circuit VCC=+5V AP1201 C1 R1 10K 0.1uF ON IN OUT FLG SET EN GND OFF Anachip Corp. www.anachip.com.tw Rev.0.4 4/9 Feb 10, 2004 AP1201 Single-Channel Power Distribution Switch Function Description Thermal Shutdown When the chip temperature exceeds 140C for any reason, the thermal shutdown function enables and turns off MOSFET's switch and signals the error flag. A hysteresis of 10C prevents the MOSFETs from turning back on until the chip temperature drops to below 130C. Error Flag An open-drained output of an N-channel MOSFET, the FLG output is pulled low to signal the following fault conditions: input under-voltage, output current limit, and thermal shutdown. Current Limit The current limit is set externally. It protects the output MOSFET switches from damage due to undesirable short circuit conditions or excess inrush current often encountered during hot plug-in. The low limit of the current limit threshold of the AP1201 allows a minimum current of 0.9A through the MOSFET switches. A current limit condition will signal the error flag. A resistor from SET to VIN sets the current-Limit value. Supply Filtering A 0.1F to 1F bypass capacitor from IN to GND, located near the device, is strongly recommended to control supply transients. Without a bypass capacitor, an output short may cause sufficient ringing on the input (from supply lead inductance) to damage internal control circuitry. Transient Droop Requirements USB supports dynamic attachment (hot plug-in) of peripherals. A current surge is caused by the input capacitance of downstream device. Ferrite beads are recommended in series with all power and ground connector pins. Ferrite beads reduce EMI and limit the inrush current during hot-attachment by filtering high-frequency signals. ILIM(MAX) ~ 1.4X ILIM(TYP) ILIM(MIN) ~ 0.8X ILIM(TYP) RSET () 10K 20K 30K 40K 60K 80K 100K 200K floating AP1201 Rset Current Limit Threshold (A) Typical value (Vout = 5V) (Vout = 3.3V) 0.71 0.69 0.92 0.90 1.01 1.00 1.05 1.02 1.10 1.08 1.15 1.11 1.19 1.16 1.22 1.20 1.25 1.23 Short Circuit Transient Bulk capacitance provides the short-term transient current needed during a hot-attachment event. With a 33F, 16V tantalum or 100F, 10V electrolytic capacitor mounted close to downstream connector per port should provide transient drop protection. Printed Circuit Layout The power circuitry of USB printed circuit boards requires a customized layout to maximize thermal dissipation and to minimize voltage drop and EMI. Anachip Corp. www.anachip.com.tw Rev.0.4 5/9 Jan 28, 2004 AP1201 Single-Channel Power Distribution Switch Marking Information 4 XX Y M X 1 2 5 3 XX : Identification code (See Appendix) Y : Year: 0-9 M : Month: A~L XX Y M X X : Blank : normal L : Lead Free Package SOT23-6L 4 7 5 7 6 1 2 3 SOT23-5L 1 5 XX 2 YM X 3 7 4 SOT89-5L Appendix Part Number AP1201AL AP1201CL AP1201AH AP1201CH AP1201BL AP1201BH Package SOT23-5/SOT89-5 SOT23-6 SOT23-5/SOT89-5 SOT23-6 SOT23-5/SOT89-5 SOT23-5/SOT89-5 Anachip Corp. www.anachip.com.tw Identification Code FL FL FH FH F1 F2 Rev.0.4 6/9 Feb 10, 2004 AP1201 Single-Channel Power Distribution Switch Package Information (1) Package Type: SOT23-5L D e1 1(4x) 4 5 E1 A E 0.10 C 5x A2 Seating Plane A1 1 2 2(4x) 3 b e With Plating b1 C C1 Gauge Plane 0.25 mm Base Metal L b Symbol L1 Dimensions In Millimeters Dimensions In Inches Min. Nom. Max. Min. Nom. Max. A 1.05 1.20 1.35 0.041 0.047 0.053 A1 0.05 0.10 0.15 0.002 0.004 0.006 A2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.55 0.010 - 0.022 b1 0.25 0.40 0.45 0.010 0.016 0.018 c 0.08 - 0.20 0.003 - 0.008 c1 0.08 0.11 0.15 0.003 0.004 0.006 D 2.70 2.85 3.00 0.106 0.112 0.118 E 2.60 2.80 3.00 0.102 0.110 0.118 E1 1.50 1.60 1.70 0.059 0.063 0.067 L 0.35 0.45 0.55 0.014 0.018 0.022 L1 0.60 Ref. 0.024 Ref. e 0.95 Bsc. 0.037 Bsc. e1 1.90 Bsc. 0.075 Bsc. 0o 5o 10o 0o 5o 10o 1 3o 5o 7o 3o 5o 7o 2 o o o o 6 8 10 Anachip Corp. www.anachip.com.tw o 6 8 10o Rev.0.4 7/9 Feb 10, 2004 AP1201 Single-Channel Power Distribution Switch Package Information (Continued) H (Ref.) (2) Package Type: SOT23-6L A G L 5 4 E C 1 2 B 3 F D (Typ.) Symbol I (Ref.) 6 0.20 L J (Ref.) Dimensions In Millimeters K (Ref.) Dimensions In Inches Min. Nom. Max. Min. Nom. Max. A 2.70 2.90 3.10 0.106 0.114 0.122 B 2.60 2.80 3.00 0.102 0.110 0.118 C 1.40 1.60 1.80 0.055 0.063 0.071 D 0.30 0.43 0.55 0.012 0.017 0.022 E 0 0.05 0.10 0.000 0.002 0.004 F 0o - 10o 0o - 10o G 1.90 Ref. 0.075 Ref. H 1.20 Ref. 0.047 Ref. I 0.12 Ref. 0.005 Ref. J 0.37 Ref. 0.015 Ref. K 0.60 Ref. 0.024 Ref. L 0.95 Ref. 0.037 Ref. Anachip Corp. www.anachip.com.tw Rev.0.4 8/9 Feb 10, 2004 AP1201 Single-Channel Power Distribution Switch (3) Package Type: SOT89-5L A C D F B E K J F L I H G Symbol A Dimensions In Millimeters Dimensions In Inches Min. Nom. Max. Min. Nom. Max. 4.40 4.50 4.60 0.173 0.177 0.181 B 4.05 4.15 4.25 0.159 0.163 0.167 C 1.50 1.60 1.70 0.059 0.063 0.067 D 1.30 1.40 1.50 0.051 0.055 0.059 E 2.40 2.50 2.60 0.094 0.098 0.102 F 0.80 - - 0.031 - - G 3.00 Ref. 0.118 Ref. H 1.50 Ref. 0.059 Ref. I 0.40 0.46 J 1.40 1.50 1.60 0.055 0.059 0.063 K 0.35 0.39 0.43 0.014 0.015 0.017 L 0.52 5o Typ. 0.016 0.018 0.020 5o Typ. Anachip Corp. www.anachip.com.tw Rev.0.4 9/9 Feb 10, 2004