CMPWR161 datasheet(2/8 Pages) CALMIRCO

2 / 8 page

430 N. McCarthy Blvd., Milpitas, CA 95035-5112

L Tel: 408.263.3214

L Fax: 408.263.7846 L www.calmicro.com

01/14/04

CMPWR161

Ordering Information

Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.

PIN DESCRIPTIONS

NAME

DESCRIPTION

1VIN

Positive input voltage for the regulator. The internal loading on this input is typically 300

µA when-

ever the regulator is enabled and less than 1

µA when the regulator is disabled. If this input is

greater than 2 inches from the main input filter, a 1

µF ceramic capacitor is recommended for addi-

tional filtering.

GND

The negative reference for all voltages.

Enable/shutdown input. When EN is asserted high (VEN ≥ 2V), the regulator is enabled. When EN

is asserted low, the regulator is shutdown (VOUT=0V). This input is compatible with CMOS logic.

BYP

Reference bypass pin. This input is used to connect an external capacitor (CBYP) for noise reduc-

tion and to maximize power supply ripple rejection. A 10nF capacitor is recommended for this func-

tion.

5VOUT

The regulated voltage output. An output capacitor of 10

µF is recommended to provide the neces-

sary phase compensation for the regulator and also minimize any transient disturbances.

PACKAGE / PINOUT DIAGRAM

Note: This drawing is not to scale.

5-pin SOT23

VIN

GND

VOUT

BYP

Top View

PART NUMBERING INFORMATION

Pins

Package

Standard Finish

Lead-free Finish

Ordering Part

Number1

Part Marking

Ordering Part

Number1

Part Marking

SOT23-5

CMPWR161Y

161Y

CMPWR161R

161R

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