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LD2980

SERIES

ULTRA LOW DROP VOLTAGE REGULATORS WITH INHIBIT

LOW ESR OUTPUT CAPACITORS COMPATIBLE

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STABLE WITH LOW ESR CERAMIC

CAPACITORS

ULTRA LOW DROPOUT VOLTAGE (0.12V

TYP. AT 50mA LOAD, 7mV TYP. AT 1mA

LOAD)

VERY LOW QUIESCENT CURRENT (80碌A(chǔ)

TYP. AT NO LOAD IN ON MODE; MAX 1碌A(chǔ)

IN OFF MODE)

GUARANTEED OUTPUT CURRENT UP TO

50mA

LOGIC-CONTROLLED ELECTRONIC

SHUTDOWN

OUTPUT VOLTAGE OF 1.5; 1.8; 2.5; 2.85;

3.0; 3.2; 3.3; 3.6; 3.8; 4.0; 4.7; 4.85; 5.0V

INTERNAL CURRENT AND THERMAL LIMIT

鹵 0.5% TOLERANCE OUTPUT VOLTAGE

AVAILABLE (A VERSION)

OUTPUT LOW NOISE VOLTAGE 160碌VRMS

TEMPERATURE RANGE: -40 TO 125擄C

SMALLEST PACKAGE SOT23-5L AND

SOT-89

FAST DYNAMIC RESPONSE TO LINE AND

LOAD CHANGES

SOT23-5L

SOT-89

DESCRIPTION

The LD2980 series are 50mA fixed-output voltage

regulator. The low drop-voltage and the ultra low

SCHEMATIC DIAGRAM

quiescent current make them suitable for low

noise, low power applications and in battery

powered systems.

The quiescent current in sleep mode is less than

1碌A(chǔ) when INHIBIT pin is pulled low. Shutdown

Logic Control function is available on pin n.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. The LD2980 is designed to

work with low ESR ceramic capacitor. Typical

applications are in cellular phone, palmtop/laptop

computer, personal digital assistant (PDA),

personal stereo, camcorder and camera.

September 2003

1/17

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