LM3642 driver equivalent, 1.5-a synchronous boost led flash driver.
*1 1.5-A High-Side Current Source for Single LED
* > 85% Efficiency in Torch Mode (at 100 mA) and
Flash Mode (at 1 A to 1.5 A)
* Accurate Programmable Flash L.
Camera Phone LED Flash
3 Description
The LM3642 is a 4-MHz fixed-frequency synchronous boost converter plus 1.5-A const.
The LM3642 is a 4-MHz fixed-frequency synchronous boost converter plus 1.5-A constant current driver for a high-current white LED. The high-side current source allows for grounded cathode LED operation providing Flash current up to 1.5 A. An adaptive.
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