ZXLD1356QET5TA(2012) データシートの表示（PDF） - Diodes Incorporated.

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ZXLD1356QET5TA
(Rev.:2012)

60V 550mA LED DRIVER and AUTOMOTIVE GRADE

Diodes Incorporated. 

Typical Applications Circuit

VIN (24V)

A Product Line of

Diodes Incorporated

ZXLD1356/ ZXLD1356Q

D1

Rs

0.36V

C1 4.7µF

VIN

100nF

ADJ

GND

L1

I SENSE

LX

ZXLD1356

GND

Pin Descriptions

Pin

Name

LX

GND

ADJ

ISENSE

VIN

Pad

Pin

Number

TSOT25

V-DFN3030-6

1

1

2

2, 5

3

3

4

4

5

6

—

Pad

Function

Drain of NDMOS switch

Ground (0V)

Multi-function On/Off and brightness control pin:

• Leave floating for normal operation.(VADJ = VREF = 1.25V giving nominal average output

current

o IOUTnom = 0.2V/RS)

• Drive to voltage below 0.2V to turn off output current

• Drive with DC voltage (0.3V<VADJ<2.5V) to adjust output current from 24% to 200% of

IOUTnom

• Connect a capacitor from this pin to ground to define soft-start time.

Soft-start time is approx.0.2ms/nF

Connect resistor RS from this to VIN to define nominal average output current IOUTnom = 0.2/RS

(Note: RSMIN=0.36V with ADJ pin open circuit)

Input voltage (6V to 60V). Decouple to ground with 4.7µF of higher X7R ceramic capacitor close

to device

Exposed pad (EP) - connected to device substrate.

To improve thermal impedance of package the EP must be connected to power ground but

should not be used as the 0V (GND) current path.

It can be left floating but must not be connected to any other voltage other than 0V.

ZXLD1356/ ZXLD1356Q

Document number: DS33470 Rev. 4 - 2

2 of 29

www.diodes.com

October 2012

© Diodes Incorporated

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