DATA SHEET AAT4687: Over-Voltage Protection Switch Applications Description The AAT4687 OVPSwitch is a member of the Skyworks Cell phones Application Specific Power MOSFET (ASPM) product family. It is Digital still cameras a P-channel MOSFET power switch with precise over-voltage GPS protection control, designed to protect low-voltage systems against high-voltage faults up to +28 V. If the input voltage MP3 players exceeds the programmed over-voltage threshold, the P-channel Personal data assistants (PDAs) MOSFET switch is turned off to prevent damage to the output load USB hot-swap/live-insertion devices circuits. The AAT4687 is available with an internally programmed over-voltage trip point or as an adjustable version programmed by two external resistors. Features The AAT4687 includes an under-voltage lockout (UVLO) protection Over-voltage protection up to 28 V circuit, which puts the device into sleep mode at low input Fixed or adjustable over-voltage protection threshold voltages, consuming less than 1 A of current. The AAT4687 also includes an enable pin (EN) to enable or disable the device and an 3 V under-voltage lockout threshold OVP, OTP fault indicator (FLT). Fast OVP response: The AAT4687 is offered in a small 10-pin, 2.2 mm 2.0 mm 0.7 s typical to over-voltage transient SC70JW package, and is specified for operation over the 40 C Low operation quiescent current: to +85 C ambient temperature range. 30 A typical A typical application circuit is shown in Figure 1. The pin 1 A max in shutdown (disabled) configurations are shown in Figure 2. Signal pin assignments and Thermal shutdown protection functional pin descriptions are provided in Table 1. 100 m typical (130 m Max.) RDS(ON) at 5 V OVP, OTP fault indicator VIO + 5 V VIN 1.8 A maximum continuous current 3 V ~ 28 V IN OUT VOUT Temperature range: 40 C to +85 C COUT SC70JW (10-pin, 2.2 mm 2.0 mm) package (MSL1, 260 C AAT4687 R1 1 F per JEDEC J-STD-020) CIN OVP 1 F FLT Fault Flag EN GND R2 Skyworks Green products are compliant with all applicable legislation and are halogen-free. tc220 For additional information, refer to Skyworks Denition of Green, document number Figure 1. AAT4687 Typical Application Circuit SQ04-0074. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 201962C Skyworks Proprietary and Confidential Information Products and Product Information are Subject to Change Without Notice June 3, 2014 1 DATA SHEET AAT4687 OVER-VOLTAGE PROTECTION SWITCH 1 10 1 10 OVP GND N/C GND 2 9 2 9 GND GND GND GND 3 8 3 8 FLT GND FLT GND 4 7 4 7 EN OUT EN OUT 5 6 5 6 IN OUT IN OUT (a) Adjustable Version (b) Fixed Version tc221 Figure 2. AAT4687 Pinout 10-Pin, 2.2 mm 2.0 mm SC70JW (Top View) Table 1. AAT4687 Signal Descriptions Pin Number Adjustable Fixed Name Description 1 N/C OVP Over-voltage protection threshold input (adjustable only). In the fixed version, this pin is not connected. 2, 8, 9, 10 GND Ground connection pin. FLT Over-voltage or over-temperature fault reporting output pin. Open drain. FLT goes low when input voltage exceeds the 3 over-voltage threshold or an over-temperature fault occurs. An external pull up resistor to VIO (6.5 V max) should be added. EN Enable input pin, active low. An internal pull-down resistor is connected on this pin. Connect to ground for normal 4 operation. Connect to high (6.5 V Max) to shut down the device, which then draws less than 1 A of current. 5 IN Power input pin. Connect 1 F capacitor from IN to GND. 6, 7 OUT Output. Connect a 0.1 F ~ 47 F capacitor from OUT to GND. Typical performance characteristics of the AAT4687 are shown in Electrical and Mechanical Specifications Figures 3 through 20 The absolute maximum ratings of the AAT4687 are provided in Table 2, the thermal information is listed in Table 3, and electrical specifications are provided in Table 4. Table 2. AAT4687 Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Maximum Units IN to GND VIN 0.3 +30 V OVP to GND VOVP 0.3 +6.5 V FLT, EN to GND VFLT, VEN 0.3 +6.5 V OUT to GND VOUT 0.3 VIN + 0.3 V Maximum continuous switch current IMAX 1.8 A Operating junction temperature range TJ 40 150 C Storage temperature TSTG 40 150 C Maximum soldering temperature (at leads) TLEAD 300 C Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed may result in permanent damage to the device. Table 3. AAT4687 Thermal Information Parameter Symbol Value Units Maximum thermal resistance (Note 1) JA 160 C/W Maximum power dissipation (Note 1, Note 2) PD 625 mW Note 1: Mounted on an FR4 board. Note 2: Derate 6.25 mW/C above 25 C. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 June 3, 2014 Skyworks Proprietary and Confidential Information Products and Product Information are Subject to Change Without Notice 201962C