General Description

The APL5320 is a P-channel low dropout linear regulator which needs only one input voltage from 2.5 to 6V, and delivers current up to 300mA to set output voltage. It also can work with low ESR ceramic capacitors and is ideal for using in the battery-powered applications such as note book computers and cellular phones. Typical dropout voltage is only 290mV at 300mA loading.

The APL5320 provides several versions of fixed output voltages ranging from 1.2 to 3.7V with step 100mV and 2.85V, 4.75V. Current-limit with current foldback and thermal shutdown functions protects the device against current over-loads and over-temperature. The APL5320 is available in SOT-23-5, TSOT-23-5, SOT-23-3, SC-70-5, VTDFN1.2x1.6-4, and TDFN 1.6x1.6-6 packages.

Features

· Wide Operating Voltage: 2.5~6V

· Low Dropout Voltage: 290mV @ 3V/300mA

· Fixed Output Voltages: 1.2~3.7V with Step 100mV, and 2.85V, 4.75V

· Guaranteed 300mA Output Current

· High PSRR: 70dB

· Current-Limit Protection

· Controlled Short-Circuit Current: 50mA

· Over-Temperature Protection

· Stable with 1mF Capacitor for Any Load

· Excellent Load/Line Transient

· SOT-23-5, TSOT-23-5, SOT-23-3, SC-70-5, VTDFN1.2x1.6-4, and TDFN1.6x1.6-6 Packages

· Lead Free and Green Devices Available (RoHS Compliant)

Applications

· Cellular Phones

· Portable and Battery-Powered Equipments

· Laptops, Palmtops, Notebook Computers

· Wireless LANs

· Portable Information Appliances

· GPSes