DATA SHEET AAT4618 Current Limited Load Switch General Description Features The AAT4618 SmartSwitch is a member of Skyworks 2.4V to 5.5V Input Voltage Range Application Specific Power MOSFET (ASPM) product Current Limit Trip Threshold Options: family. It is a current limited P-channel MOSFET power 400mA Min switch designed for high-side load switching applications 500mA Min operating with inputs ranging from 2.4V to 5.5V, making 1A Min it ideal for 2.5V, 3V, and 5V systems. An integrated Fast Transient Response: current-limiting circuit protects the input supply from 400ns Response to Short Circuit large currents which may cause the supply to fall out of Low Quiescent Current: regulation. In addition, the AAT4618 thermal overload 10A Typical protection limits power dissipation and junction temper- < 1A with Switch Off atures associated with prolonged periods of operation in 125m Typical R DS(ON) current limit. Due to its low R , the AAT4618 can be FAULT Flag with 4ms Blanking DS(ON) used to control loads that require up to factory preset Under-Voltage Lockout 400mA, 500mA, or 1A. The ultra-fast current limit Thermal Shutdown response to a sudden short circuit is a mere 400ns which Temperature Range: -40C to +85C reduces the requirements of local supply bypassing. An 4kV ESD Rating open drain FAULT flag signals an over-current or over- 5-Pin SOT23 or 8-Pin SC70JW Package temperature condition after a 4ms timeout. Quiescent current is a low 10A and the supply current decreases Applications to less than 1A in shutdown mode. Hot Swap Supplies The AAT4618 is available in a Pb-free 5-pin SOT-23 or a Notebook Computers 8-pin SC70JW package and is specified over the -40C to Peripheral Ports +85C temperature range. Personal Communication Devices The AAT4600 series is a family of adjustable and fixed USB Ports voltage SmartSwitch products with a range of current handling capabilities. Single versions with adjustable current limit (AAT4610, AAT4601) or fixed current limit (AAT4625) are available, as well as dual versions with fixed current limit (AAT4626, AAT4670). Typical Application INPUT OUTPUT IN OUT AAT4618 100k FAULT FAULT ON ON (ON) C C GND IN (ON) OUT 1F 0.47F GND GND Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 201942A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 14, 2012 1 2 DATA SHEET AAT4618 Current Limited Load Switch Pin Descriptions Pin SOT23-5 SC70JW-8 Symbol Function 1 5 OUT P-channel MOSFET drain. 2 6, 7, 8 GND Ground connection. 31 FAULT Open-drain FAULT output. 42 ON (ON) Enable input: AAT4618 active low, AAT4618-1 active high. 5 3, 4 IN P-channel MOSFET source. Pin Configuration SOT23-5 SC70JW-8 (Top View) (Top View) 1 8 GND FAULT 1 5 OUT IN 2 7 ON (ON) GND 2 GND 3 6 IN GND 3 4 4 5 FAULT ON (ON) IN OUT Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 201942A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 14, 2012