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LP2951

Adjustable Micro Power Voltage Regulator
Features
Low Quiescent Current Low Dropout Voltage Low Temperature Coefficient Tight Line and Load Regulation Guaranteed 100mA Output Current Internal Short Current Thermal Limit Error Signals of Output Dropout (8 pin Versions Only) External Shut-down ( 8 pin Versions Only)

Description
The LP2951 is an adjustable micro power voltage regulator suitable for use in battery-powered systems. This regulator has various functions such as alarm which warns of a low output voltage, often due to falling batteries on the input, the external shutdown which enables the regulator to be switched on and off, current and temperature limiting.

8-SOP

1

Internal Block Diagram

OUT(1)

INPUT(8)

PROGRAM (2)

ERROR AMPLIFIER

FEEDBACK(7)

C1 SHUTDOWN(3)

OFFSE TAP(6)

FROM EXTERNAL INPUT

SCP

T ERROR COMPARATO 1.25V COMPARATOR R REFERENCE TO EXTERNAL INPUT

GROUND(4)

ERROR(5)

Rev. 1.0.0
2001 Fairchild Semiconductor Corporation

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LP2951 DATASHEET