LP8543
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Краткое описание:
7-Channel SMBus/I2C Controlled WLED Driver for Medium-Sized LCD Backlight
Дополнительная информация
The LP8543 is a white LED driver with an integrated boost converter and 7 adjustable current sinks. It supports an input voltage range of 5.5V to 22V, making it suitable for 2x, 3x, and 4x Li-Ion battery configurations. The device features adaptive boost output control to minimize power consumption and supports PWM phase shift dimming and an Ambient Light Sensor (ALS) interface. Internal EEPROM stores calibration data for brightness and LED current, which can be adjusted with 8-bit resolution from 0 to 60 mA. Safety features include thermal protection, LED fault detection, and low-input voltage shutdown.
| RoHS | Yes |
| REACH | Yes |
| Vin (max) | 22V |
| Vin (min) | 5.5V |
| Vout (max) | 40V |
| Vout (min) | 10V |
| Peak efficiency | 91% |
| Duty cycle (max) | 100% |
| Number of channels | 7count |
| LED current per channel | 60mA |
| Switching frequency (max) | 1250kHz |
| Operating temperature range | -30 to 85°C |
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