Diodes ZXLD1366 User Manual download pdf

ZXLD1366

Document number: DS31992 Rev. 8 - 2

1 of 30

www.diodes.com

October 2013

Product Line o

Diodes Incorporated

ZXLD1366

HIGH ACCURACY 1A, 60V LED DRIVER WITH AEC-Q100

Description

The ZXLD1366 is a continuous mode inductive step-down

converter, designed for driving single or multiple series connected

LEDs efficiently from a voltage source higher than the LED voltage.

The device operates from an input supply between 6V and 60V and

provides an externally adjustable output current of up to 1A.

The ZXLD1366 has been qualified to AECQ100 Grade 1 enabling

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

The ZXLD1366 uses a high-side output current sensing circuit

which uses an external resistor to set the nominal average output

current. The output current can be adjusted above, or below the set

value, by applying an external control signal to the 'ADJ' pin.

Enhanced output current dimming resolution can be achieved by

applying a PWM signal to the ‘ADJ’ pin.

Soft-start can be forced using an external capacitor from the ADJ

pin to ground. 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

Typical Application Circuit

Features

• Typically better than 0.8% output current accuracy

• Simple and with low part count

• Single pin on/off and brightness control using DC voltage or

PWM

• PWM resolution up to 1000:1

• High efficiency (up to 97%)

• Switching frequencies up to 1MHz

• Wide input voltage range: 6V to 60V

• Inherent open-circuit LED protection

• Available in thermally enhanced Green molding packages

 SO-8EP 

= +45°C/W

 U- DFN3030-6 

= +44°C/W

 TSOT25 

82°C/W

 Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)

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

• Qualified to AEC-Q100 Grade 1

 SO-8EP ZXLD1366EN8TC

 TSOT25 ZXLD1366ET5TA

Applications

• Automotive lighting

• Low voltage industrial lighting

• LED back-up lighting

• Illuminated signs

• Emergency lighting

• SELV lighting

• Refrigeration lights

Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

2. See http://www.diodes.com/quality/lead_free.html 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.

(TOP VIEW)

TSOT25

SENSE

ADJ

GND

U-DFN3030-6

(TOP VIEW)

GND

ADJ

SENSE

GND

(TOP VIEW)

SO-8EP

GND

ADJ

GND

SENSE

GND

ZXLD1366

ADJ

(24V)

0.2V

4.7µFC1

GND

10 0 nF

1 2 3 4 5 6 ... 29 30

Summary of Contents

Page 1 - ZXLD1366

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Page 6 - Device Description (cont.)

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Page 17 - Application Information

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