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General Description

The APL5155 is a low ground current linear regulator, which operates with input voltage from 5.4V to 25V and delivers output current up to 150mA. Typical dropout voltage is only 750mV at 150mA loading. This combination of the high voltage and the low ground current makes the APL5155 ideal for USB and portable devices, using 2-cell or 3-cell Li-Ion battery inputs.

The APL5155 is stable with aluminum, tantalum, and ceramic capacitors. It requires a 1mF or greater capacitor for stability.

The APL5155 has many protection functions, including over-temperature, current-limit and short circuit current limit protections, which prevent the device from thermal over-load and current over-load.

The APL5155 regulator is available in miniature SOT-23-5, SOT-89, and SOP-8P packages.

Features

? Wide Input Voltage Range: 5.4V to 25V

? Ultra Low Ground Current: 10mA

? High Output Accuracy: ±2.5

? Excellent Load/Line Transient

? Low Dropout Voltage: 750mV @ 150mA

? Fixed Output Voltages for 5V/3.3V or Adjustable

Voltage

? Built-In Current-Limit Protection

? Built-In Over-Temperature Protection

? Zero Shutdown Current

? Internal Soft-Start Function

? POR Scheme to Prevent VOUT Spike

? SOT-23-5, SOT-89, and SOP-8P Packages

? Lead Free and Green Devices Available

(RoHS Compliant)

Applications

? USB Power Supply

? Keep-Alive Supply in Notebook and Portable

Computers

? Logic Supply for High-Voltage Batteries

? Battery Powered Systems