LM3646 converter equivalent, 1.5-a synchronous boost converter.
*1 High-Side Current Sources Allowing for Grounded LED Cathode for Improved Thermal Management
* > 85% Efficiency in Torch and Flash Modes
* Small Solution Si.
Camera Phone LED Flash and Torch
3 Description
The LM3646 utilizes a 4-MHz fixed-frequency synchronous boost converter .
The LM3646 utilizes a 4-MHz fixed-frequency synchronous boost converter to provide power to dual 1.5-A constant current LED sources. The high-side current sources allow for grounded cathode LED operation providing flash current up to 1.5 A total. An .
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