1 Features

• Input Voltage Range: 2.2 V to 16 V

• Output Voltage Range: 1.5 V to 5 V

• Wide Supply Voltage Range (16-V Maximum)

• Output Voltage Accuracy 1% (A Grade)

• Ultra-Low-Dropout Voltage

• Specified 250-mA Output Current

• Stable With Low-ESR Output Capacitor

• < 1-µA Quiescent Current When Shut Down

• Low Ground Pin Current at All Loads

• High Peak Current Capability

• Low ZOUT: 0.3-Ω Typical (10 Hz to 1 MHz)

• Overtemperature and Overcurrent Protection

• −40°C to +125°C Junction Temperature Range

• Smallest Possible Size (SOT-23, WSON

Package)

• Requires Minimum External Components

• Custom Voltages Available

2 Applications

• Cellular Phones

• Palmtop/Laptop Computers

• Personal Digital Assistants (PDA)

• Camcorders, Personal Stereos, Cameras

3 Description

The LP2992 is a 250-mA, fixed-output voltage

regulator designed to provide ultra-low dropout and

low noise in battery-powered applications.

Using an optimized vertically integrated PNP (VIP)

process, the LP2992 delivers unequaled performance

in all specifications critical to battery-powered

designs:

• Dropout voltage: Typically 450 mV at 250-mA

load, and 5 mV at 1-mA load.

• Ground pin current: Typically 1500 µA at 250-mA

load, and 75 µA at 1-mA load.

• Enhanced stability: The LP2992 is stable with

output capacitor equivalent series resistance

(ESR) as low as 5 mΩ, which allows the use of

ceramic capacitors on the output.

• Sleep mode: Less than 1-µA quiescent current

when ON/OFF pin is pulled low.

• Smallest possible size: SOT-23 and WSON

packages use absolute minimum board space.

• Precision output: 1% tolerance output voltages

available (A grade).

• Low noise: By adding a 10-nF bypass capacitor,

output noise can be reduced to 30 µV (typical).

• Multiple voltage options, from 1.5 V to 5 V, are

available as standard products. Consult factory for

custom voltages.