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
|
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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