SC4431CSK-1TR View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC4431CSK-1TR

Shunt Regulator With Open Collector Output

Semtech Corporation 

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POWER MANAGEMENT

Pin Configurations

(TOP VIEW)

SC4431

Shunt Regulator With

Open Collector Output

Ordering Information

Part Number(1)(2)

SC4431CSK-X

Package

SOT-23-5

Notes: (1) Only available in tape and reel packaging.

(Suffix ‘.TR’ e.g. SC4431CSK-X.TR).

(2) Where “-X” denotes initial reference voltage toler-

ance. Available options are ±0.5% (-.5), ±1% (-1) and

±2% (-2).

(SOT-23-5 Lead)

Pin Descriptions

Pin#

1

2

3

4

5

Pin Name Pin Function

VCC

This is the input supply pin for the SC4431. A low ESR capacitor should be used to bypass this

pin to GND right at the IC.

GND Logic and power ground.

NC

No connection.

REF This is connected to the non-inverting input of the error amplifier.

OUT

This is the output pin of the device, essentially an open collector.

Note: A 22nF low ESR (ceramic) capacitor is required from

this pin to GND for stable operation.

Block Diagram

Marking Information

Top Mark

4431

Bottom Mark

yyww

 2003 Semtech Corp.

yyww = Datecode (Example: 9908)

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www.semtech.com

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