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Data Sheet
LM3645 Synchronous Boost Quad LED Flash Driver
with
2-A High-Side Current Sources
1 Features
- Quad independent led current
source programmability
- Accurate and programmable LED
current range from 0.525 mA to 2 A
- Optimized flash LED current
during low battery conditions (IVFM)
- > 85% efficiency in torch mode
(at 100 mA) and flash mode (at 1 A to 2 A)
- Grounded cathode LED operation
for improved thermal management
- Dual hardware strobe enable
(STR1, STR2)
- Synchronization input for RF
power amplifier pulse events (TORCH/TX)
- Hardware torch enable
(TORCH/Tx)
- Dual remote NTC monitoring
(TEMP1, TEMP2)
- Fixed output voltage mode
- 1-MHz I2C-compatible
interface