AAT1204

Advanced Analog Technology, Inc. AAT1204 400-mA MULTI-INPUT LOW-DROPOUT REGULATOR WITH VAUX SWITCH Features z Complete Power Management Description The AAT1204 is a multi-input low-dropout z Automatic Input Voltage Selection regulator that provides constant output supply z Input Voltage Source Detector With 3.3V at the output capable of driving a 400-mA Hysteresis load. z 400-mA Load Current Capability With The AAT1204 provides regulated power output VCC50 or VSB50 or AUX33 Input Source for systems that have multiple input sources and z Integrated Low rDS (on) Switch require constant voltage source with a z Regulated Output 3.3V (fixed) low-dropout voltage. This is a intelligent power z Output Short Circuit Protection source selection device with a low-dropout www.DataSheet4U.com regulator for either VCC50 or VSB50 inputs, and Pin Configuration a low-resistance bypass switch for the AUX33 input. Transitions may occur from one input supply to another without generating a glitch outside of the TOP VIEW specification range on the 3.3-V output. The device has an incorporated reverse-blocking VSB50 GND 8 1 scheme to prevent excess leakage from the input GND 2 7 VCC50 terminals in the event that the output voltage is OUT33 GND 3 6 greater than the input voltage. GND 4 5 AUX33 The input voltage is prioritized in the following order: VCC50, VSB50, AUX33. ( 8-PIN SOIC ) – – ¥xÆWÃþ¤ñ¬ì§ÞªÑ¥÷¦³-½q Advanced Analog Technology, Inc. V 1.0 Advanced Analog Technology, Inc. AAT1204 Func...