ZXLD1350

30V 350mA LED DRIVER with AEC-Q100

ZXLD1350

Document number: DS33468 Rev. 8 - 2

1 of 22

www.diodes.com

March 2011

© Diodes Incorporated

A Product Line of

Diodes Incorporated

Description

The ZXLD1350 is a hysteretic 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 efficiently external

adjustable output current up to 350mA.

The ZXLD1350 has been qualified to AECQ100 grade 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% (Note 1)

•

Wide input voltage range: 7V to 30V

•

40V transient capability

•

Up to 1MHz switching frequency

•

Typical 4% output current accuracy

•

Qualified to AEC-Q100 Grade 2

•

Available in “Green” Molding Compound (No Br, Sb)

•

Lead Free Finish/ RoHS Compliant (Note 2)

Typical Application Circuit

SET

V

IN

LX

GND

ADJ

ZXLD1350

R

S

0.33

Ω

L1

47µH

C1

1µF

GND

V

IN

7~30V

Notes:

1.

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.

2.

EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at:

http://www.diodes.com/products/lead_free.html

I

SENSE

V

IN

ADJ

GND

LX

TSOT23-5

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