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SPX2920S-5-0

400mA Low Drop Out Voltage Regulator with Shutdown

Signal Processing Technologies 

SPX2920

400mA Low Drop Out Voltage Regulator with Shutdown

FEATURES

■ Output 3.3V, 5.0V, at 400mA Output

■ Very Low Quiescent Current

+VIN

100K

8 +VIN

1

VOUT

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

VREF

R2

ERROR

OUTPUT

■ Current & Thermal Limiting

■ Error Flag Warns of Output Dropout

(for SO-8)

Adjustable Regulator

5V

VIN

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

VIN GND VOUT

Front View

VIN GND VOUT

Top View

8-Pin Surface Mount

VOUT

SENSE

SHUTDOWN

GND

1

8

2

7

SPX2920

3

6

4

5

GND

VIN

FEEDBACK

5V/ 3.3V TAP

ERROR

SOT-223 (M3)

SPX2920

1 23

VIN GND VOUT

Top View

Top View

Date: 03/02/06

SPX2920 400mA Low Drop Out Voltage Regulator with Shutdown

1

©Copyright 2006 Sipex Corporation

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