AP1212 DUAL USB HIGH-SIDE POWER SWITCH General Description Features • • • • • • • • • • • • • • • • 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. 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) SOP-8L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) Applications • • • USB hubs Hot plug-in power supplies Battery-charger circuits Ordering Information A P 1 2 1 2 X X X X Enable Active - High H: L : Active - Low Note: Packing U : Tube -13 : Taping Lead Free L : Lead Free G : Green 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device (Note 3) AP1212XS Note: Package S : SOP - 8L Package Packaging Code S SOP-8L Tube Quantity Part Number Suffix 100 -U 13” Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel -13 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be on found our website at http://www.diodes.com/datasheets/ap02001.pdf. AP1212 Rev. 2 1 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH Pin Assignments (Top View) EN1 8 OUT1 1 FLG1 2 AP1212 6 GND FLG2 3 EN2 7 IN 4 5 OUT2 SOP-8L Pin Descriptions Name EN1 EN2 FLG1 FLG2 GND IN OUT1 OUT2 AP1212 Rev. 2 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. 2 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH Block Diagram FLG1 Driver Charge Pump Current Limit Thermal Shutdown UVLO Charge Pump Current Limit EN2 FLG2 CS IN CS Driver Power N-MOSFET EN1 Power N-MOSFET OUT1 OUT2 Absolute Maximum Ratings Symbol VIN VFLG IFLG VOUT VEN TST ESD HBM ESD MM AP1212 Rev. 2 (Note 3) Parameter Supply Voltage Fault Flag Voltage Fault Flag Current Output Voltage Control Input Range Storage Temperature Note 3 Note 3 3 of 12 www.diodes.com Rating +7 +7 50 +7 –0.3 to VIN +2 -65 to +150 500 150 Unit V V mA V V °C V V FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH Operating Ratings Note: (Note 4) Symbol VIN Parameter Supply Voltage TOP ΘJA ΘJC Operating Junction Temperature Thermal Resistance SOP Junction to Ambient Thermal Resistance SOP Junction to Case Rating Unit +2.7 to +5.5 -40 to +125 165 26 V °C °C/W °C/W 3. Exceeding the absolute maximum rating may damage the device. 4. The device is not guaranteed to function outside its operating rating. Electrical Characteristics (Under the conditions of VIN =+5V and TA =25oC, unless otherwise specified) Symbol 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 Note: Error Flag Output Resistance Error Flag Off Current UVLO Threshold Conditions Switch off, OUT = open (Note 6) All switches on, OUT = open (Note 6) (Note 6) 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 10 10 10 0.6 µS mS µS µS µA A 0.8 1.0 1.25 A 1.0 1.2 1.4 A °C 140 130 10 15 0.01 2.5 2.3 25 40 1 °C Ω Ω µA V V 5. Devices are ESD sensitive. Handling precautions are recommended. Human Body model, tested per JEDEC 22-A114. Machine model, tested per JEDEC 22-A115. 6. Off is VEN≦0.8V and on is VEN≧2.4V for the AP1212H. Off is VEN≧2.4V and on is VEN≦0.8V for the AP1212L. AP1212 Rev. 2 4 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH Typical Performance Characteristics On-Resistance vs. Temperature On-Resistance vs. Supply Voltage 160 120 150 ON-RESISTANCE (ms) ON-RESISTANCE (ms) 116 112 108 104 100 RL =10ohm T=25℃ 96 140 130 120 3.0 3.5 4.0 4.5 5.0 VSUPPLY=3.3V 100 90 RL=10ohm 80 70 60 - 40 92 88 2.5 VSUPPLY =5V 110 5.5 - 20 SUPPLY VOLTAGE (V) RISE TIME ( m S ) RISE TIME ( mS ) 1.0 O 85 C -40OC 0.8 O 25 C 0.6 0.4 80 100 1.2 VSUPPLY =5V 1.0 0.8 CL=47 uF 0.0 3.5 4.0 4.5 5.0 RL=10ohm CL=47uF 0.2 0.0 3.0 VSUPPLY=3.3V 0.6 0.4 RL=10ohm 0.2 5.5 -40 -20 0 SUPPLY VOLTAGE (V) 20 40 60 TEMPERATURE (OC) 80 100 On-Current vs. Temperature On-Current vs. Supply Voltage 200 220 200 180 160 140 120 100 80 60 40 180 160 O 25 C CURRENT (≤gA) CURRENT (≤gA) 60 1.4 1.2 AP1212 Rev. 2 40 Turn-On Rise Time vs. Temperature 1.4 20 0 2.5 20 TEMPERATURE (O C ) Turn-On Rise Time vs. Supply Voltage 2.5 0 O -40 C 85OC VSUPPLY =5V 140 120 100 80 60 VSUPPLY =3.3V 40 20 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 0 -40 -20 0 20 40 60 80 100 O TEMPERATURE (C) 5 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated 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 200 VSUPPLY=5V 150 VSUPPLY=3.3V 100 50 50 0 0 O -40 C -50 2.5 3.0 3.5 4.0 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 CURRENT-LIMIT (A) CURRENT-LIMIT (A) 1.6 -40 C O 25 C O 85 C 0.6 0.4 1.2 VSUPPLY=5V 1.0 0.8 VSUPPLY=3.3V 0.6 0.4 3.0 3.5 4.0 4.5 5.0 5.5 0.0 -40 SUPPLY VOLTAGE (V) AP1212 Rev. 2 100 0.2 0.2 0.0 2.5 80 Short-Circuit Current-Limit vs. Temperature Short-Circuit Current-Limit vs. Supply Voltage 0.8 60 TEMPERATURE ( C) 1.6 1.0 40 O SUPPLY VOLTAGE (V) 1.2 20 -20 0 20 40 60 80 100 O TEMPERATURE ( C) 6 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated 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 VSUPPLY=5V 1.2 1.0 VSUPPLY=3.3V 0.8 0.6 0.4 0.2 0.2 0.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 -40 -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) AP1212 Rev. 2 7 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated 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 Inrush Current VOUT VFLG VIN=5V CL=47µF RL=35Ω Output Turn-On Rise Time 140 mA VOUT 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 Short-Circuit Current V 140 mA I IOUT TIME (2mS/div.) TIME (500µS/div.) Current-Limit Response (AP1212H) Current-Limit Response (AP1212H) VEN VEN VIN=5V CL=47µF VOUT Current-Limit Short-Circuit Current Threshold Thermal Shutdown VFLG VOUT Hysteresis (10OC) TIME (50mS/div.) AP1212 Rev. 2 VIN=5V VIN=5V CL=47µF Current-Limit Threshold Short-Circuit Current I TIME (20µS/div.) 8 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH Typical Application Circuit Power Supply 3.3V Downstream USB Ports AP1212 5V 7 IN 8 OUT1 0.1uF 0.1uF ferrite bead 2 FLG1 1 EN1 3 FLG2 4 EN2 USB Control D+ Dferrite bead VBUS 33uF GND 5 OUT2 0.1uF D+ Dferrite bead VBUS 33uF GND GND 6 ferrite bead Test Circuit VCC 10K R1 +5V 10K R2 ON OFF R3>=10 EN1 OUT1 FLG1 IN C1 FLG2 ON OFF AP1212 Rev. 2 GND 0.1uF R4>=10 EN2 OUT2 AP1212 9 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH Function Description 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. 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. 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 applications 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 over current fault of either one of the two MOSFET switches, the thermal shutdown function turns off both MOSFET switches and signals 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. AP1212 Rev. 2 10 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH Marking Information SOP-8L (Top View) 5 8 Enable Type H : Active High L : Active Low L : Lead Free G : Green Logo AP12 12 X Part Number YY WW X X 4 ~ 1 ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 SOP-8L Device Package Identification Code AP1212XS SOP-8L AP1212 Package Information 0.254 0.08/0.25 5.79/6.20 3.70/4.10 Package Type: SOP-8L Gauge Plane Seating Plane 0.38/1.27 Detail "A" 7°~9° 0.20typ 1.30/1.50 1.75max. 0.35max. 45° 0.3/0.5 1.27typ 7°~9° Detail "A" 3.70/4.10 4.80/5.30 AP1212 Rev. 2 11 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1212 DUAL USB HIGH-SIDE POWER SWITCH IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP1212 Rev. 2 12 of 12 www.diodes.com FEBRUARY 2007 © Diodes Incorporated