ZXLD1370EST16TC datasheet(1/36 Pages) DIODES

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ZXLD1370

Document number: DS32165 Rev. 4 - 2

1 of 36

www.diodes.com

March 2011

A Product Line of

Diodes Incorporated

60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER WITH AEC-Q100

Description

The ZXLD1370 is an LED driver controller IC for driving

external MOSFETs to drive high current LEDs. It is a

multi-topology controller enabling it to efficiently control

the current through series connected LEDs. The multi-

topology enables it to operate in buck, boost and buck-

boost configurations.

The

60V

capability

coupled

with

its

multi-topology

capability enables it to be used in a wide range of

applications and drive in excess of 15 LEDs in series.

The ZXLD1370 is a modified hysteretic controller using a

patent pending control scheme providing high output

current accuracy in all three modes of operation. High

accuracy dimming is achieved through DC control and

high frequency PWM control.

The ZXLD1370 uses two pins for fault diagnosis. A flag

output highlights a fault, while the multi-level status pin

gives further information on the exact fault.

Pin Assignments

TSSOP-16EP

Curve showing LED current vs. TLED

85˚C

70˚C

ILED

100%

10%

TLED

Thermal network response in Buck configuration with:

Rth = 2k

Ω and TH1=10kΩ (beta =3900)

REF

TAD

Rth

TH1

Features

•

0.5% typical output current accuracy

•

6 to 60V operating voltage range

•

LED driver supports Buck, Boost and Buck-boost

•

configurations

•

Wide dynamic range dimming

o

20:1 DC dimming

o

1000:1 dimming range at 500Hz

•

Up to 1MHz switching

•

High temperature control of LED current using TADJ

•

AEC-Q100 Grade 1

•

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

with lead Free Finish/ RoHS Compliant (Note 1)

Note 1:

EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions

applied. Please visit our website at

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

Typical Application Circuit

Buck-boost diagram utilizing thermistor and TADJ

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Diodes Incorporated	ZXLD1370EST16TC	1Mb / 40P	60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST Rev 6

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