TK11900 datasheet(9/10 Pages) TOKO

Part #	TK11900

Description	ADJUSTABLE LOW DROPOUT REGULATOR

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Manufacturer	TOKO [TOKO, Inc]

Direct Link	http://www.toko.com

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9 / 10 page

November 2000 TOKO, Inc.

Page 9

TK11900

APPLICATION INFORMATION (CONT.)

CURRENT BOOST

The output current can be increased by connecting an external NPN transistor as shown above.

The output current capability depends on the H

fe of the external transistor.

Note: The TK11900 internal short circuit protection and the thermal sensor do not protect the external transistor.

CONT

NOISE BYPASS

VIN

VOUT

FEEDBACK

R1

R2

CL

10 µF

+

1 µF

CN

0.1 µF

CONTROL

RE

Note: V

OUT = 1.25 [(R1 + R2) / R2]

10 k - R

2 - 60 k

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