Update: 29 September, 2023
The MAX8631X/Y charge pump drives up to eight white LEDs with regulated constant current for uniform intensity. The main group of LEDs (M1-M4) can be driven up to 30mA per LED for backlighting. The flash group of LEDs (F1-F4) is independently controlled and can be driven up to 100mA per LED (or 400mA total). Two 200mA LDOs are on-board to provide power for camera functions. The LDOs’ output voltages are pin-programmable to meet different camera-module requirements. By utilizing adaptive 1x/1.5x/2x charge-pump modes and very-low-dropout current regulators, the MAX8631X/Y achieves high efficiency over the full 1-cell lithium-battery voltage range. The 1MHz fixed-frequency switching allows for tiny external components, and the regulation scheme is optimized to ensure low EMI and low input ripple.
File format: PDF
Size: -
MD5 Checksum: 6B97E5CDD8EA85433EF96401996FFD03
Publication date: 04 May, 2012
Downloads: -
PDF Link: MAXIM MAX8631X/Y handbook PDF