ZXLD1350

ZXLD1350

Document number: DS33468 Rev. 7 - 2

1 of 22

www.diodes.com

November 2010

© Diodes Incorporated

A Product Line of

Diodes Incorporated

30V 350mA LED DRIVER with AEC-Q100

Description

The ZXLD1350 is a continous mode inductive step-down

converter with integrated switch and high side current sense.

It operates from an input supply from 7V to 30V driving single

or multiple series connected LEDs effeciently external

adjustable output current up to 350mA.

The ZXLD1350 has been qualified to AECQ100.2 allowing it

to operate at ambient temperatures from -40 to 105°C.

The output current can be adjusted by applying a DC voltage

or a PWM waveform. 100:1 adjustment of output current is

possible using PWM control. Applying a voltage of 0.2V or

lower to the ADJ pin turns the output off and switches the

device into a low current standby state.

Pin Assignments

Features

•

Simple low parts count

•

Internal 30V NDMOS switch

•

Internal PWM filter

•

High efficiency (up to 95%

•

Wide input voltage range: 7V to 30V

•

40V transient capability

•

Up to 1MHz switching frequency

•

Typical 4% output current accuracy

•

Qualified to AEC-Q100.2

Typical Application Circuit

ZXLD1350

LED

Cled

L1

LX

I

SENSE

D1

R

S

V

IN

V

IN

*Using standard external components as specified under electrical characteristics. Efficiency is dependent upon the number of

LEDs driven and on external component types and values.

I

SENSE

V

IN

ADJ

GND

LX

TSOT23-5

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