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LM3643, LM3643A
SNVS967A
- AUGUST 2014
- REVISED NOVEMBER 2014
LM3643 Synchronous Boost Dual LED Flash Driver with 1.5-A High-Side Current Sources
1 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
- Hardware...
