LM3644
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Краткое описание:
Dual 1.5-A Current Source Camera Flash LED Driver
Дополнительная информация
The LM3644 is a dual LED flash driver with a 2-MHz or 4-MHz fixed-frequency synchronous boost converter providing power to dual 1.5-A constant current LED sources. It features an I2C-compatible interface, independent programmable currents for Flash or Torch modes, and an adaptive regulation method to maximize efficiency. The device includes hardware strobe/torch pins, an NTC thermistor monitor, and overvoltage protection.
| RoHS | Yes |
| REACH | Yes |
| Number of Channels | 2channels |
| Input Voltage (Max) | 5.5V |
| Input Voltage (Min) | 2.5V |
| Switching Frequency | 2 or 4MHz |
| Output Current (Max) | 2.5A |
| Quiescent Current (Typ) | 0.3mA |
| Operating Temperature Range | -40 to 85°C |
| Max LED Current per Channel (Flash) | 1.5A |
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