The LM3645 is a quad LED flash driver utilizing a synchronous boost converter to power four independent 2A constant current sources. It features 256 programmable current levels per channel, dual remote NTC monitoring, and a 1-MHz I2C-compatible interface. The device includes an adaptive regulation method to maximize efficiency and support for flash, torch, and IR modes.
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| Number of LED Outputs | 4 |
| Maximum Flash Current Per Channel | 2A |
| I2C Address | 0x65hex |
| Programmable Current Levels | 256levels |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 85°C |
| Efficiency (Torch Mode at 100mA) | > 85% |
| Switching Frequency Options | 2MHz |
| RoHS | Yes |
| REACH | Yes |
| Msl Rating | Level-1-260C-UNLIM |
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