High Voltage Constant Current Regulator

XR

1/2

FEATURES

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3V to 80V operation range

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270mV low current sense voltage

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Linear over temperature protection

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Can be parallel connected for

higher current

APPLICATIONS

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LED Lighting Applications

Downlight

High bay

Specialty

Architectural

Description

The XR46014 is an 80V constant current regulator that can drive

upto 250mA. Users may adjust the regulating current from 10mA to

250mA through an external resistor.

A linear type over temperature protection function protects the system

by decrease the current linearly when the junction tempareture of the

chip is higher than 125°C. Multiple XR46014 chips can be connected

in parallel to provide higher driving current capability.

The device is available in the SOT-223-3L package.

Typical Application

+

VAC

LED

Q1

XR46000

U1

XR46014

IN

GND

CS

C

BD

RZ

ZD

RCS

1

CS

2

2

GND

3

IN

Pin Configuration

SOT-223