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July 2003

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VERY LOW DROPOUT VOLTAGE (120mV

AT 50mA AND 7mV AT 1mA LOAD)

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VERY LOW QUIESCENT CURRENT (375

µA

TYP. AT 50mA LOAD AND 75

µAAT 1mA)

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OUTPUT CURRENT UP TO 50mA

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LOGIC CONTROLLED ELECTRONIC

SHUTDOWN

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OUTPUT VOLTAGE OF 1.5,1.8, 2.5, 2.8, 2.85,

3, 3.1, 3.2, 3.3, 3.5, 3.6, 3.8, 4, 4.7, 5V

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INTERNAL CURRENT AND THERMAL LIMIT

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AVAILABLE IN

± 1% TOLLERANCE (AT 25°C,

AVERSION)

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SUPPLY VOLTAGE REJECTION: 45dB (TYP)

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ONLY 1µF FOR STABILITY

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LOW OUTPUT NOISE VOLTAGE 30µVrms

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SMALLEST PACKAGE SOT23-5L

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TEMPERATURE RANGE: -40°C TO 125°C

DESCRIPTION

The LD2982 is a 50mA fixed output voltage

regulator. The ultra low drop voltage and the low

quiescent current make them particularly suitable

for low noise, low power applications, and in

battery

powered

systems.

In

sleep

mode

quiescent current is less than 1µA when INHIBIT

pin is pulled low. Shutdown Logic Control Function

is available on pin 3 (TTL compatible). This means

that when the device is used as local regulator, it

is possible to put a part of the board in standby,

decreasing the total power consumption.

between bypass pin and GND

reduce the noise

to 30µVrms.

Typical application are in cellular phone, palmtop/

laptop computer, personal digital assistant (PDA),

personal stereo, camcorder and camera.

LD2982

SERIES

VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR

WITH INHIBIT FUNCTION, LOW ESR CAP. COMPATIBLE

SCHEMATIC DIAGRAM

SOT23-5L