DATA SHEET AAT4684 Over-Voltage Protection Switch General Description Features The AAT4684 OVPSwitch is a member of Skyworks Over-Voltage Protection Up to +28V Application Specific Power MOSFET (ASPM) product Fixed or Adjustable Over-Voltage Protection Threshold family. It is a P-channel MOSFET power switch with pre- 3V Under-Voltage Lockout Threshold cise over-voltage protection control, designed to protect Fast OVP Response: low-voltage systems against high-voltage faults up to 1 s (Max) to Over-Voltage Transient +28V. If the input voltage exceeds the programmed Low Operation Quiescent Current over-voltage threshold, the P-channel MOSFET switch 30A Typical will be turned off to prevent damage to the output load 1 A Max in Shutdown (Disabled) circuits. The AAT4684 is available with an internally pro- 100m Typical (130m max) R at 4.5V DS(ON) grammed over-voltage trip point or as an adjustable 1.8A Maximum Continuous Current version programmed by two external resistors. Temperature Range: -40C to 85C Available in TSOPJW-12 Package The AAT4684 also includes an under-voltage lockout (UVLO) protection circuit, which will put the device into sleep mode at low input voltages only consuming < 1A Applications of current. Cell Phones The AAT4684 is offered in a small Pb-free, 12-pin Digital Still Cameras TSOPJW package and is specified for operation over the GPS -40C to +85C ambient temperature range. MP3 Players Personal Data Assistants (PDAs) USB Hot Swap/Live Insertion Device Typical Application (Adjustable Version) V +5V IO V 3V 28V IN IN Fault Flag FLT AAT4684 OVP 1F OUT V EN GND OUT Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 201959A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 16, 2012 DI SC O N TI N U E D DATA SHEET AAT4684 Over-Voltage Protection Switch Pin Descriptions Pin Fixed Adj. Symbol Function 1, 2, 9, 11, 12 1, 2, 9, 12 N/C Not connected. Over-voltage fault reporting output pin. FLT goes low when input voltage exceeds 33 FLT the over-voltage threshold. An external pull up resistor to V (6.5V max) should be IO added. Enable pin, active low. An internal pull-down resistor is connected on this pin. Con- 44 EN nect to Ground for normal operation. Connect to high (6.5V max) to shut down the device when it draws less than 1A of current. 5, 6 5, 6 OUT Output pin. Connect a 0.1F~47F capacitor from OUT to GND. 7, 8 7, 8 IN Power input pin. Connect 1F capacitor from IN to GND. 10 10 GND Ground connection pin. n/a 11 OVP Over-voltage protection threshold input pin (Adjustable version only). Pin Configuration TSOPJW-12 TSOPJW-12 Fixed Version Adjustable Version (Top View) (Top View) 1 12 1 12 N/C N/C N/C N/C 2 11 2 11 N/C N/C N/C OVP 3 10 3 10 FLT GND FLT GND 4 9 4 9 EN N/C EN N/C 5 8 5 8 OUT IN OUT IN 6 7 6 7 OUT IN OUT IN Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 201959A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 16, 2012 DI SC O N TI N U E D