Supertex inc.

Supertex inc.

1235 Bordeaux Drive, Sunnyvale, CA 94089

Tel: 408-222-8888

www.supertex.com

CL25

Features

Applications

General Description

The Supertex CL25 is a high voltage, temperature

compensated, constant current source. The device is trimmed

to provide a constant current of 25mA±10% at an input

voltage of 5.0 - 90V. No external components are required.

The device can be used as a two terminal constant current

source or constant current sink.

A typical application for the CL25 is to drive LEDs with a

constant current of 25mA. Multiple CL2s can also be used

in parallel to provide higher currents such as 50mA, 75mA

or 100mA. The device is available in TO-92 and TO-243AA

(SOT-89) packaging.

Typical Application Circuit

Simple 90V, 25mA,

Temperature Compensated,

Constant Current, LED Driver IC

I

LED

25mA

VA

VB

Up to 90V

+ V

LED(total)

VA

Control Circuit

and Temperature

Compensation

VB

Functional Circuit

Diagram

CL25

+

V

LED(TOTAL)

-