General Description

The AS1352 is a high-performance quad CMOS low dropout voltage regulator in a single QFN package. The efficient set of programmable power supplies is optimized to deliver the best compromise between quiescent current and regulator performance for mobile phones, PDAs, MP3 players, and other battery powered devices.

Key Features

4 Independent Voltage Regulators with Shutdown

Output Current: 200mA each LDO

One Time Programmable Output Voltage (User- or Factory-Trimmed)

Programmable Output Voltage Range: 1.8 to 3.3V in 0.1V Steps

Accuracy: ±2%

PSRR: 70dB at 1kHz, 40dB at 100kHz

Line Regulation: ±2mV

Load Regulation: ±0.6mV

Supply Range: 3 to 5.5V

0.2V Dropout Voltage @ I = 200mA

Shutdown Current: ≤1µA

Supply Current Without Load: 225µA

Softstart for Low Inrush Current

Stable with Low ESR Ceramic Capacitors from 1 to 4.7µF

Low Noise: 40µV rms @10Hz to 100kHz Bandwidth

Thermal Protection

Over-Current Protection

Temperature Range: -40 to +85°C

Package Types

- 12-pin QFN 4x4

- 16-pin QFN 3x3

Applications

The AS1352 is ideal for cordless and mobile phones, MP3 players, CD and DVD players, PDAs, handheld computers, digital cameras, and any other hand-held battery-powered device.