DATA SHEET AAT4614 Adjustable Current Limited Load Switch with Fault Flag General Description Features The AAT4614 SmartSwitch is a current limited P-channel Input Voltage Range: 2.4V to 5.5V MOSFET power switch designed for high side load switch- Programmable Over-Current Threshold ing applications. This switch operates with inputs ranging Fast Transient Response: from 2.4V to 5.5V, making it ideal for both 3V and 5V 1s Response to Short Circuit systems. An integrated current-limiting circuit protects Low Quiescent Current the input supply against large currents which may cause 10A Typical while Enabled the supply to fall out of regulation. Reverse current 1A Max with Switch Off (T = 25C) A blocking is provided to protect the load switch from 130m Typical R DS(ON) reverse current potentials while the device is shutdown. Only 2.4V Needed for ON/OFF Control Under-Voltage Lockout The AAT4614 is also protected from thermal overload Reverse Blocking During Disable which is limited by power dissipation and junction tem- 4ms Fault Blanking peratures. Current limit threshold is programmed with a Fault Flag Open Drain Output resistor from SET to ground and may be adjusted for (Not Available for SOT23-5 Package) levels up to 1.4A. The ultra-fast current limit response to Active Hi/Lo Enable Options a sudden short circuit is a mere 1s which reduces the Over-Temperature Protection requirements of local supply bypassing. An open drain 4kV ESD Rating FAULT flag signals an over-current or over-temperature 6-Pin SOT23, 5-Pin SOT23,or 8-Pin SC70JW Package condition after a 4ms blanking time to prevent false Temperature Range: -40C to +85C reporting. Quiescent current is a low 10A and the supply current decreases to less than 1A in shutdown mode. Applications The AAT4614 is offered in the small Pb-free, 8-pin Hot Swap Supplies SC70JW, SOT23-6 and SOT23-5 packages, and is speci- Notebook Computers fied for operation over the -40C to +85C ambient Portable Products temperature range. Proprietary Peripheral Ports USB Ports Typical Application Power Supply Input Output IN OUT AAT4614 ON/ON 0.47F EN/EN 1F 100k GND FLT SET Fault Flag R SET Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 201939A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 14, 2012 DATA SHEET AAT4614 Adjustable Current Limited Load Switch with Fault Flag Pin Description Pin SOT23-6 SOT23-5 SC70JW-8 Symbol Description Current limiting load switch output (high side P-channel MOSFET Drain). Connect 1 1 5 OUT a 0.47F capacitor from OUT to GND for best load transient response. 2 2 6,7,8 GND IC ground connection Current limit fault ag pin, open-drain output, active low signal. Pull up with a 3 n/a 1 FLT 10k to 100k resistor. 44 2 ON/ON Load switch enable input. Active high and active low options are available. Current limit set pin. Connect a resistor between this pin and ground to program 5 3 3 SET the desired current limit set point. Load switch power supply input pin (high side P-channel MOSFET source). Bypass 65 4 IN with a 1F capacitor from IN to GND. Pin Configuration SOT23-6 SOT23-5 (Top View) (Top View) 1 6 1 5 OUT IN OUT IN 2 5 2 SET GND GND 3 3 4 4 ON/ON ON/ON FLT SET SC70JW-8 (Top View) 1 8 GND FLT 2 7 ON/ON GND 3 6 GND SET 45 IN OUT Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 201939A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 14, 2012