GENERAL DESCRIPTION

The ADP170/ADP171 are low voltage input, low quiescent current, low-dropout (LDO) linear regulators that operate from 1.6 V to 3.6 V and provide up to 300 mA of output current. The low 66 mV dropout voltage at 300 mA load improves efficiency and allows operation over a wide input voltage range. The low 23 μA of quiescent current at a 0 mA load makes the ADP170/ADP171 ideal for battery-operated portable equipment.

FEATURES

Maximum output current: 300 mA

Input voltage range: 1.6 V to 3.6 V

Low quiescent current IGND = 23 μA with 0 mA load IGND = 170 μA with 300 mA load

Low shutdown current: <1 μA

Low dropout voltage: 66 mV at 300 mA load

Output voltage accuracy: ±1

Up to 31 fixed-output voltage options available from 0.8 V to 3.0 V

Adjustable-output voltage range 0.8 V to 3.0 V (ADP171)

Accuracy over line, load, and temperature: ±3

Stable with small 1 μF ceramic output capacitor

PSRR performance of 70 dB at 10 kHz and 73 dB at 1 kHz

Low noise: 30 μV rms at VOUT = 0.8 V

Current limit and thermal overload protection

Logic-controlled enable

Compact 5-lead TSOT package

APPLICATIONS

Mobile phones

Digital camera and audio devices

Portable and battery-powered equipment

DSP/FPGA/microprocessor supplies

Post dc-dc regulation