Description
The LM3643 is a dual LED flash driver that provides a high level of adjustability within a small solution size.
The LM3643 utilizes a 2-MHz or 4-MHz fixedfrequency synchronous boost converter to provide power to the dual 1.5-A constant current LED sources.
Features
- 1 1.5 A Total Allowed LED Current During Operation (ILED1 + ILED2 = 1.5 A).
- Dual Independent LED Current Source Programmability.
- Accurate and Programmable LED Current Range from 1.4 mA to 1.5 A.
- Optimized Flash LED Current During Low Battery Conditions (IVFM).
- > 85% Efficiency in Torch Mode (@ 100 mA) and Flash Mode (@1 A to 1.5 A).
- Grounded Cathode LED Operation for Improved Thermal Management.
- Small Solution Size: < 16 mm2.
LM3643A Datasheet
