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HT7939

Part Number	HT7939
Manufacturer	Holtek Semiconductor
Description	High Current and Performance White LED Driver
Published	Feb 7, 2010
Detailed Description	HT7939 High Current and Performance White LED Driver Features · Input range from 2.6V~5.5V · Built-in Power MOSFET · Can...
Datasheet	HT7939 PDF File

Overview

HT7939 High Current and Performance White LED Driver Features · Input range from 2.
6V~5.
5V · Built-in Power MOSFET · Can drive up to 39 White LEDs with a 5V input · Low standby current: 0.
1mA (typ.
) with VEN low · Integrated Over-voltage, Over-temperature and · Under voltage lock-out protection · 1.
2MHz fixed switching frequency · High efficiency - up to 90% · 6-pin SOT23-6 package Over-current protection circuits Applications · Display Backlighting · LED lighting Automatic DVD player Digital photo frame Handheld computer General Description The HT7939 is a high efficiency boost converter for driving White LEDs using current mode operation.
The device is designed to drive up to 39 White ...

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