AAT1205

Advanced Analog Technology, Inc. AAT1205 Details are subject to change without notice 400-mA MULTI-INPUT LOW-DROPOUT REGULATOR WITH DUAL OUTPUT POWER MANAGEMENT Features z Complete Power Management Description The AAT1205 is a multi-input low-dropout z Automatic Input Voltage Selection regulator (LDO) specially designed for LAN cards. It provides advanced dual constant output supply z Input Voltage Source Detector With Hysteresis 3.3V & 2.5V at the output capable of driving a z 400-mA Load Current Capability With 400-mA load. The output (OUT25) can be VCC50¡B VSB50 or AUX33 Input Source disabled by connecting EN25 pin to GND. z Integrated Low rDS(on ) Switch The AAT1205 is equipped with dual regulated power output for systems with multiple input z Dual Regulated Output 3.3V¡] fixed¡^ & 2.5V sources and require dual constant voltage source ¡] fixed¡^ with a low-dropout voltage. This is an intelligent www.DataSheet4U.com z Output Short Circuit Protection (SCP) power source selection device with a low-dropout regulator for either VCC50 or VSB50 inputs, and Pin Configuration a low-resistance bypass switch for the AUX33 input. TOP VIEW The AAT1205 allows transitions to progress VSB50 GND 8 1 smoothly from one input supply to another without generating a glitch outside of the specified range 2 GND 7 VCC50 of 3.3V & 2.5V output. Furthermore, this device OUT33 3 EN25 6 has an incorporated reverse-blocking scheme to OUT25 4 5 AUX33 prevent excessive leakage from the input terminals...