SPX2920_06 Datasheet, PDF (1/10 Pages) Sipex Corporation – 400mA Low Drop Out Voltage Regulator with Shutdown

SPX2920
400mA Low Drop Out Voltage Regulator with Shutdown
FEATURES
■ Output 3.3V, 5.0V, at 400mA Output
■ Very Low Quiescent Current
+V_IN
100K
8 _+VIN
1
V_OUT
SPX2920 FB ⁷
1.2V to 20V
+
R₁ ^{0.01µF 10µF}
■ Low Dropout Voltage
■ Extremely Tight Load and Line Regulation
■ Very Low Temperature Coefficient
SHUTDOWN
INPUT
OFF
ON
SD
3
______
ERROR
GND
5
4
V_REF
R₂
ERROR
OUTPUT
■ Current & Thermal Limiting
■ Error Flag Warns of Output Dropout
(for SO-8)
Adjustable Regulator
5V
V_IN
IN
OUT
■ Logic-Controlled Electronic Shutdown
(for SO-8)
■ Output Programmable from 1.24V to 20V
(for SO-8)
+
0.1 µF
SPX2920
GND
+
2.2 µF
■ Equivalent Replacement for MIC2920A and
MIC2904
IG
5V Regulator Circuit
Now Available in Lead Free Packaging
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 (140µA Typical) and very low dropout voltage. This
includes a tight initial tolerance of 1% maximum 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 from 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,
surface mount SO-8 (same pin out as SPX2951), SOT-223, 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.
GND
TO-220-3 (U)
GND
SPX2920
123
TO-263-3 (T)
SPX2920
1
2
3
V_IN GND V_OUT
Front View
V_IN GND V_OUT
Top View
8-Pin Surface Mount
VOUT
SENSE
SHUTDOWN
GND
1
8
2
7
SPX2920
3
6
4
5
GND
V_IN
FEEDBACK
5V/ 3.3V TAP
ERROR
SOT-223 (M3)
SPX2920
1 23
V_{IN GND} V_OUT
Top View
Top View
Date: 03/02/06
SPX2920 400mA Low Drop Out Voltage Regulator with Shutdown
1
©Copyright 2006 Sipex Corporation