ZXLD1356 データシートの表示（PDF） - Diodes Incorporated.

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ZXLD1356

60V 550mA LED DRIVER and AUTOMOTIVE GRADE

Diodes Incorporated. 

A Product Line of

Diodes Incorporated

ZXLD1356/ ZXLD1356Q

Device Description (cont.)

Adjusting Output Current

The device contains a low pass filter between the ADJ pin and the threshold comparator and an internal current limiting resistor (50kΩ nom)

between ADJ and the internal reference voltage. This allows the ADJ pin to be overdriven with either DC or pulse signals to change the VSENSE

switching threshold and adjust the output current.

Details of the different modes of adjusting output current are given in the applications section.

Output Shutdown

The output of the low pass filter drives the shutdown circuit. When the input voltage to this circuit falls below the threshold (0.2V nom.), the

internal regulator and the output switch are turned off. The voltage reference remains powered during shutdown to provide the bias current for

the shutdown circuit. Quiescent supply current during shutdown is nominally 60µA and switch leakage is below 5µA.

ZXLD1356/ ZXLD1356Q

Document number: DS33470 Rev. 4 - 2

7 of 29

www.diodes.com

October 2012

© Diodes Incorporated

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