ZXLD1374 データシートの表示（PDF） - Diodes Incorporated.

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ZXLD1374

60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST LED DRIVER CONVERTER WITH AEC-Q100

Diodes Incorporated. 

A Product Line of

Diodes Incorporated

ZXLD1374

60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST

LED DRIVER CONVERTER WITH AEC-Q100

Description

The ZXLD1374 is a 60V LED driver with integrated 1.5A low side

switch to drive high current LEDs. It is a multi-topology converter

enabling it to operate in Buck, Boost and Buck-boost configurations;

efficiently controlling the current of up to 16-series connected LEDs.

The ZXLD1374 is a modified hysteretic converter using a patent

pending control scheme providing high output current accuracy in all

three topologies. High accuracy dimming is achieved through

DC control and high frequency PWM control.

The ZXLD1374 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.

The ZXLD1374 has been qualified to AEC-Q100 Grade 1 enabling

operation in ambient temperatures from -40 to +125°C.

Pin Assignments

ADJ 1

REF 2

TADJ 3

SHP 4

STATUS 5

SGND 6

PGND 7

PGND 8

N/C 9

N/C 10

Thermal

Pad

20 GI

19 PWM

18 FLAG

17 ISM

16 VIN

15 VAUX

14 LX

13 LX

12 N/C

11 N/C

Features

• 0.5% Typical Output Current Accuracy

• 6.3 to 60V Operating Voltage Range

• 1.5A Integrated Low Side Switch

• LED Driver Supports Buck, Boost and Buck-Boost Topologies

• Wide Dynamic Range Dimming

• 20:1 DC Dimming

• 1000:1 Dimming Range at 500Hz

• Up to 1MHz Switching

• High Temperature Control of LED Current Using TADJ

• AEC-Q100 Grade 1

• TSSOP-20EP: Available in “Green” Molding Compound (No Br,

Sb) with lead Free Finish/ RoHS Compliant

ƒ Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

ƒ Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen and Antimony free, "Green" and Lead-Free.

3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)

and <1000ppm antimony compounds.

Typical Applications Circuit

VIN

R1

L1

SD1

C1

VAUX VIN ISM

PWM

PSD3200

GI

RGI2

LX

ADJ ZXLD1374 LX

REF

FLAG

COUT

R4 TADJ

STATUS

SHP NC SGND PGND

RGI2 TH1

C2

100pF

GND

ZXLD1374

Document number: DS35032 Rev. 3 - 2

1 of 39

www.diodes.com

September 2012

© Diodes Incorporated

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