Diodes Incorporated AP131-18WL-7

Description
The AP131 is a 300mA, fixed output voltage, low dropout linear regulator. It includes a pass element, error amplifier, band-gap, current limit, and thermal shutdown circuitry. The device is ON when the EN pin is set to a logic high level.
The low dropout voltage and low quiescent current make it suitable for critical current applications, such as battery-powered devices. The typical quiescent current is approximately 50µA from zero to maximum load.
The internal flexible design results in extensively fixed output voltage versions, making it convenient for various applications.
Built-in current limit and thermal shutdown functions prevent damage from fault conditions. An external capacitor can be connected to the BP pin to reduce output noise.

Features
Input voltage range: 2.7 to 5.5V
Dropout voltage: 400mV at 300mA output current
Guaranteed 300mA output current
Internal Ron 1.50 PMOS draws no base current
Low quiescent current: 50μA
Output voltage options: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 2.9V, 3.0V, 3.3V, 3.5V; accuracy 2%
Active low shutdown function (EN pin)
Fast transient response
Good load regulation
Current limit and thermal shutdown protection
Short circuit current fold-back
Lead-free package: SOT25
Available in "Green" molding compound (no Br, Sb)
Lead-free finish/RoHS compliant

Applications
Battery-powered devices
Wireless communication
CD-ROM, DVD, and LAN cards
PC peripherals