AP1212 Dual USB High-Side Power Switch Features General Description - Compliant to USB specifications - Dual independent switches control - 2.7V to 5.5V input voltage - 500mA minimum continuous current per port - 110mΩ typical on-resistance - 1.25A maximum short circuit current limit - Independent open-drain fault flag pins - 110μA typical on-state supply current - 1μA typical off-state supply current - Output can be forced higher than input (off-state) - Thermal shutdown - 2.4V typical under voltage lockout (UVLO) - 1ms turn-on (soft-start) and fast turn-off - Enable active-high (H) or active-low (L) - 8-pin SOP and PDIP packages The AP1212 series are dual integrated high-side power switch with independent enable and flag functions, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The AP1212 series support the following USB requirements: each switch channel supplies up to 500mA as required by USB downstream devices; the switch’s low on-resistance meets USB voltage drop requirements; fault current is limited to typically 1000mA, well below the UL 25VA safety requirements; 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. Applications • • • USB hubs Hot plug-in power supplies Battery-charger circuits Pin Assignments Pin Descriptions Name (Top View) EN1 EN2 8 OUT1 EN1 1 7 IN FLG1 FLG2 FLG2 3 6 GND GND EN2 4 5 OUT2 IN FLG1 2 AP1212 OUT1 OUT2 PDIP/SOP Description 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. 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. 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. 1.0 1/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Ordering Information AP 12 1 2 X X X X Power Switch Enable H: Active-High L: Active-Low Package Lead Free Packing S:SOP-8 N:PDIP-8L Blank : Normal L : Lead Free Package Blank : Tube A: Taping Block Diagram FLG1 Driver EN2 FLG2 Charge Pump Current Limit Thermal Shutdown UVLO Charge Pump Current Limit CS IN CS Driver Power N-MOSFET EN1 Power N-MOSFET OUT1 OUT2 Absolute Maximum Ratings (Note 1) Symbol VIN VFLG IFLG VOUT VEN TST TLEAD ESD Rating Parameter Supply Voltage Fault Flag Voltage Fault Flag Current Output Voltage Control Input Range Storage Temperature Lead Temperature Note 3 Rating +7 +7 50 +7 –0.3 to VIN +2 -65 to +150 260 4 Anachip Corp. www.anachip.com.tw Unit V V mA V V oC oC KV Rev. 1.0 2/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Operating Ratings (Note 2) Symbol VIN TA ΘJA ΘJA Parameter Supply Voltage Ambient Operating Temperature Thermal Resistance SOP Thermal Resistance PDIP IN Parameter ICC Supply Current VIT IEN CEN Enable Input Threshold Enable Input Current Enable Input Capacitance RDS(ON) Switch Resistance TOND TR TOFFD TF ILEAK IOUT Output Turn-On Delay Output Turn-On Rise Time Output Turnoff Delay Output Turnoff Fall Time Output Leakage Current Continuous Load Current IOS Short-circuit Current Limit ILIM Current-Limit Threshold TTS Over-temperature Shutdown Threshold RFO IFOH UVLO Error Flag Output Resistance Error Flag Off Current UVLO Threshold Unit +2.7 to +5.5 -40 to +85 V oC oC/W oC/W 120 100 Electrical Characteristics (Under the conditions of V Symbol Rating =+5V and TA=25oC, unless otherwise specified.) Conditions switch off, OUT = open (Note 4) all switches on, OUT = open (Note 4) (Note 4) VEN =0V to 5.5V VIN =2.7V ~ 5.5V, IOUT =500mA, each switch RL =10Ω each output RL =10Ω each output RL =10Ω each output RL =10Ω each output each output (output disabled) each output Each output (enable into load), VOUT=0V Ramped load applied to enabled output TJ increasing TJ decreasing VIN = 5V, IL = 10mA VIN = 3.3V, IL = 10mA VFLAG = 5V VIN = increasing VIN = decreasing Min. 0.8 -1 Typ. 0.50 Max. 5 Unit µA 110 160 µA 1.7 ±0.01 1 2.40 1 V µA pF 110 140 mΩ 30 1 0.5 0.5 µS mS µS µS µA A 10 10 10 0.6 0.8 1.0 1.25 A 1.0 1.2 1.4 A oC oC 140 130 10 15 0.01 2.5 2.3 25 40 1 Ω Ω µA V V Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5k in series with 100pF. Note 4. Off is VEN≦0.8Vand on is VEN≧2.4V for the AP1212H. Off is VEN≧2.4V and on is VEN≦0.8V for the AP1212L. Anachip Corp. www.anachip.com.tw Rev.1.0 3/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Typical Performance Characteristics On-Resistance vs. Temperature On-Resistance vs. Supply Voltage 160 120 150 140 112 ON-RESISTANCE (mΩ) ON-RESISTANCE (mΩ) 116 108 104 100 RL=10Ω 96 O T=25 C 92 88 2.5 130 120 VSUPPLY=5V 110 VSUPPLY=3.3V 100 90 RL=10Ω 80 70 3.0 3.5 4.0 4.5 5.0 60 -40 5.5 -20 0 1.4 1.2 1.2 RISE TIME (mS) RISE TIME (mS) O -40 C O 25 C 0.4 RL=10Ω 0.2 3.5 4.0 4.5 5.0 VSUPPLY=3.3V 0.6 0.4 RL=10Ω 0.0 -40 5.5 CL=47µ F -20 0 40 60 80 100 TEMPERATURE ( C) On-Current vs. Temperature On-Current vs. Supply Voltage 200 220 200 180 180 160 O CURRENT (µ A) 25 C 160 CURRENT (µ A) 20 O SUPPLY VOLTAGE (V) 140 120 O -40 C 100 O 85 C 80 60 VSUPPLY=5V 140 120 100 80 60 VSUPPLY=3.3V 40 40 20 20 0 2.5 100 0.8 0.2 CL=47µ F 3.0 80 VSUPPLY=5V 1.0 O 85 C 0.8 0.0 2.5 60 Turn-On Rise Time vs. Temperature Turn-On Rise Time vs. Supply Voltage 0.6 40 TEMPERATURE ( C) 1.4 1.0 20 O SUPPLY VOLTAGE (V) 3.0 3.5 4.0 4.5 5.0 0 -40 5.5 -20 0 20 40 60 80 100 O SUPPLY VOLTAGE (V) TEMPERATURE ( C) Anachip Corp. www.anachip.com.tw Rev.1.0 4/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Typical Performance Characteristics (Continued) Off-Current vs. Temperature Off-Current vs. Supply Voltage 350 350 300 300 O 85 C 250 CURRENT (nA) CURRENT (nA) 250 200 150 O 100 25 C 50 0 -50 2.5 200 3.5 4.0 VSUPPLY=3.3V 100 50 0 O -40 C 3.0 VSUPPLY=5V 150 4.5 5.0 -50 -40 5.5 -20 0 40 60 80 100 TEMPERATURE ( C) Enable Threshold vs. Temperature Enable Threshold vs. Supply Voltage 2.0 2.0 1.8 1.8 ENABLE THRESHOLD (V) ENABLE THRESHOLD (V) 20 O SUPPLY VOLTAGE (V) 1.6 VEN RISING 1.4 VEN FALLING 1.2 VEN RISING 1.6 VEN FALLING 1.4 VIN=5V 1.2 O T=25 C 1.0 2.5 3.0 3.5 4.0 4.5 5.0 1.0 -40 5.5 -20 0 1.4 1.4 O -40 C CURRENT-LIMIT (A) CURRENT-LIMIT (A) 1.6 O 25 C 0.8 O 85 C 0.6 0.4 80 100 1.2 VSUPPLY=5V 1.0 0.8 VSUPPLY=3.3V 0.6 0.4 0.2 0.2 0.0 2.5 60 Short-Circuit Current-Limit vs. Temperature Short-Circuit Current-Limit vs. Supply Voltage 1.0 40 TEMPERATURE ( C) 1.6 1.2 20 O SUPPLY VOLTAGE (V) 3.0 3.5 4.0 4.5 5.0 0.0 -40 5.5 SUPPLY VOLTAGE (V) -20 0 20 40 60 80 100 O TEMPERATURE ( C) Anachip Corp. www.anachip.com.tw Rev.1.0 5/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Typical Performance Characteristics (Continued) Current-Limit Threshold vs. Temperature Current-Limit Threshold vs. Supply Voltage 1.6 1.4 1.4 O -40 C O 25 C 1.2 CURRENT-LIMIT (A) CURRENT-LIMIT THRESHOLD (A) 1.6 O 85 C 1.0 0.8 0.6 0.4 1.0 VSUPPLY=3.3V 0.8 0.6 0.4 0.2 0.2 0.0 2.5 VSUPPLY=5V 1.2 3.0 3.5 4.0 4.5 5.0 0.0 -40 5.5 -20 0 20 40 60 80 100 O SUPPLY VOLTAGE (V) TEMPERATURE ( C) UVLO Threshold vs. Temperature 3.0 VIN RISING UVLO THRESHOLD (V) 2.5 VIN FALLING 2.0 1.5 1.0 0.5 0.0 -40 -20 0 20 40 60 80 100 O TEMPERATURE ( C) Anachip Corp. www.anachip.com.tw Rev.1.0 6/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Functional Characteristics Turn-On/Turn-Off (AP1212H) Turn-On (AP1212H) VEN VEN VIN=5V CL=47µF RL=35Ω VFLG VOUT Inrush Current VFLG VIN=5V CL=47µF RL=35Ω Output Turn-On Rise Time VOUT 140 mA 140 mA Inrush Current IOUT IOUT TIME (10mS/div.) TIME (200µS/div.) Turn-Off (AP1212H) Enabled Into Short (AP1212H) VEN VEN VIN=5V CL=47µF RL=35Ω VFLG VOUT VFLG VIN=5V VOUT 140 mA Short-Circuit Current IOUT IOUT TIME (2mS/div.) TIME (500µS/div.) Current-Limit Response (AP1212H) Current-Limit Response (AP1212H) VEN VEN VFLG VFLG VOUT IOUT VIN=5V CL=47µF VIN=5V CL=47µF Current-Limit Short-Circuit Current Threshold Thermal Shutdown VOUT Current-Limit Threshold Short-Circuit Current IOUT Hysteresis (10OC) TIME (50mS/div.) TIME (20µS/div.) Anachip Corp. www.anachip.com.tw Rev.1.0 7/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Typical Application Circuit Power Supply 3.3V Downstream USB Ports AP1212 5V 7 IN OUT1 0.1uF 0.1uF feerite bead 2 FLG1 1 EN1 3 FLG2 4 EN2 USB Control 8 D+ Dfeerite bead VBUS 33uF GND OUT2 5 0.1uF GND 6 D+ Dfeerite bead VBUS 33uF GND feerite bead Test Circuit VCC 10K R1 +5V 10K R2 ON OFF ON OFF 10Ω R3 EN1 OUT1 FLG1 IN FLG2 GND EN2 OUT2 0.1uF C1 10Ω R4 AP1212 Anachip Corp. www.anachip.com.tw Rev.1.0 8/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Function Description Supply Filtering A 0.1µF to 1µF 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. Error Flag An open-drained output of N-channel MOSFET, the FLG output is pulled low to signal the following fault conditions: input undervoltage, output current limit, and thermal shutdown. Current Limit The current limit threshold is preset internally. 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 AP1212 allows a minimum current of 0.5A through the MOSFET switches. A current limit condition will signal the error flag. Transient Droop Requirements USB support 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. Thermal Shutdown When the chip temperature exceeds 140ºC for any reason other than overcurrent fault of either one of the two MOSFET switches, the thermal shutdown function turns off both MOSFET switches and signal the error flag. A hysteresis of 10ºC prevents the MOSFETs from turning back on until the chip temperature drops to below 130ºC. Short Circuit Transient Bulk capacitance provides the short-term transient current needed during a hot-attachment event. With a 33µF, 16V tantalum or 100µF, 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. Marking Information (Top View) 8 5 Enable Type H: Active High L: Active Low Logo AP1212 X Part Number Blank: normal L: Lead Free Package YY WW X X 4 ~ 1 ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 PDIP/SOP Anachip Corp. www.anachip.com.tw Rev.1.0 9/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Package Information (1) Package Type: PDIP-8L D E1 E-PIN O0.118 inch E 15 (4X) PIN #1 INDENT O0.025 DEEP 0.006-0.008 inch C 7 (4X) A1 L A A2 eB B S Symbol A A1 A2 B B1 B2 C D E E1 e L eB S e B1 B2 Dimensions in millimeters Min. Nom. Max. 5.33 0.38 3.1 3.30 3.5 0.36 0.46 0.56 1.4 1.52 1.65 0.81 0.99 1.14 0.20 0.25 0.36 9.02 9.27 9.53 7.62 7.94 8.26 6.15 6.35 6.55 2.54 2.92 3.3 3.81 8.38 8.89 9.40 0.71 0.84 0.97 Anachip Corp. www.anachip.com.tw Dimensions in inches Min. Nom. Max. 0.210 0.015 0.122 0.130 0.138 0.014 0.018 0.022 0.055 0.060 0.065 0.032 0.039 0.045 0.008 0.010 0.014 0.355 0.365 0.375 0.300 0.313 0.325 0.242 0.250 0.258 0.100 0.115 0.130 0.150 0.330 0.350 0.370 0.028 0.033 0.038 Rev.1.0 10/11 Sep.23, 2004 AP1212 Dual USB High-Side Power Switch Package Information (Continued) H E (2) Package Type: SOP-8L L VIEW "A" D 0.015x45 7 (4X) e B A1 C A A2 7 (4X) VIEW "A" y Symbol A A1 A2 B C D E e H L y θ Dimensions In Millimeters Min. Nom. Max. 1.40 1.60 1.75 0.10 0.25 1.30 1.45 1.50 0.33 0.41 0.51 0.19 0.20 0.25 4.80 5.05 5.30 3.70 3.90 4.10 1.27 5.79 5.99 6.20 0.38 0.71 1.27 0.10 0O 8O Anachip Corp. www.anachip.com.tw Dimensions In Inches Min. Nom. Max. 0.055 0.063 0.069 0.040 0.100 0.051 0.057 0.059 0.013 0.016 0.020 0.0075 0.008 0.010 0.189 0.199 0.209 0.146 0.154 0.161 0.050 0.228 0.236 0.244 0.015 0.028 0.050 0.004 0O 8O Rev.1.0 11/11 Sep.23, 2004