LM3642
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Краткое описание:
LM3642 1.5-A Synchronous Boost LED Flash Driver with High-Side Current Source
Дополнительная информация
The LM3642 is a 4-MHz fixed-frequency synchronous boost converter plus 1.5-A constant current driver for a high-current white LED. It features an integrated high-side current source for grounded cathode LED operation and an I2C-compatible interface for programmable flash and torch currents. The device includes a hardware flash enable (STROBE) and a TX input for synchronization with RF power amplifier events, making it suitable for camera phone LED flash applications.
| RoHS | Compliant |
| REACH | Affected |
| Number of Pins | 9count |
| I2C Interface Speed | 400kHz |
| Input Voltage Range | 2.5 to 5.5V |
| Switching Frequency | 4MHz |
| Maximum Flash Current | 1.5A |
| Operating Temperature Range | -40 to 85°C |
| Efficiency (Torch Mode at 100mA) | > 85% |
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