LP2951 Datasheet, PDF (1/10 Pages) Semtech Corporation – 150mA ADJUSTABLE VOLTAGE REGULATOR

www.fairchildsemi.com
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)
PROGRAM
(2)
C1
FROM
EXTERNAL
INPUT
SHUTDOWN(3)
GROUND(4)
INPUT(8)
+
ERROR
AMPLIFIER
-
+
FEEDBACK(7)
SCP
-+
OFFSE
ERROR
+_T
COMMPAARRAATTOOR
1.25V +
R
REFERENCE
TAP(6)
TO
EXTERNAL
ERROR(5) ^INPUT
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.0