© Semiconductor Components Industries, LLC, 2006

September, 2006 − Rev. 8

1

Publication Order Number:

CS5203−1/D

CS5203−1

3.0 A Adjustable Linear

Regulator

The CS5203−1 linear regulator provides 3.0 A at adjustable output

voltages with an accuracy of ±1.5 %. The device uses two external

resistors to set the output voltage within a 1.25 V to 5.5 V range.

The regulator is intended for use as a post regulator and

microprocessor supply. The fast loop response and low dropout

voltage make this regulator ideal for applications where low voltage

operation and good transient response are important.

The circuit is designed to operate with dropout voltages less than 1.4 V

at 3.0 A output current. Device protection includes overcurrent and

thermal shutdown.

The CS5203−1 is pin compatible with the LT1085 family of linear

regulators but has lower dropout voltage.

packages.

Features

Figure 1. Applications Diagram

CS5203−1

Adj

10 mF

5.0 V

5.0 V

0.1 mF

5.0 V

124 W

1.0%

200 W

1.0%

3.3 V @ 3.0 A

22 mF

5.0 V

DP SUFFIX

CASE 418AB

TO−220−3

T SUFFIX

CASE 221A

1 2

3

Pin 1. Adj

See general marking information in the device marking

section on page 8 of this data sheet.

DEVICE MARKING INFORMATION

12

3

http://onsemi.com

See detailed ordering and shipping information in the package

dimensions section on page 8 of this data sheet.

ORDERING INFORMATION