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Equivalent Replacement for MIC2920A and
MIC2904
5V Regulator Circuit
IG
DESCRIPTION
The SPX2920 is a low power voltage regulator. This device is an excellent choice for use in battery-powered
applications such as cordless telephones, radio control systems, and portable computers. The SPX2920
features very low quiescent current (140碌A Typ.) and very low dropout voltage. This includes a tight initial
tolerance of 1% max and very low output temperature coefficient, making the SPX2920 useful as a low-
power voltage reference.
The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling
voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the
regulator to be switched on and off. The SPX2920 is offered in 3-pin TO-220 package, SO-8 (same pin
out as SPX2951), SOT-223, and surface mount and 3-pin TO-263 packages.
The regulator output voltage (of the SO-8) may be pin-strapped for a 3.3V and 5.0V or programmed from
1.24V to 20V with an external pair of resistors.
TO-220-3 (U)
TO-263-3 (T)
V
OUT
8-Pin Surface Mount
SOT-223 (M3)
1
2
3
4
8
7
V
IN
FEEDBACK
5V/ 3.3V TAP
ERROR
V
IN
GND V
OUT
SPX2920
SPX2920
1
2
3
1
2
3
SENSE
SHUTDOWN
GND
SPX2920
1
2
3
SPX2920
6
5
V
IN
GND
V
OUT
V
IN
GND V
OUT
Front View
Top View
Top View
Top View
Rev: A Date: 03/30/04
SPX2920 400mA Low Drop Out Voltage Regulator with Shutdown
漏Copyright 2004 Sipex Corporation
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