MAX1570 white LED driver circuit diagram

Published:2011/8/12 1:20:00 Author:Lucas | Keyword: white LED driver | From:SeekIC

MAX1570 is 1 times voltage-multiplying mode, 1.5 times voltage-multiplying high-efficiency charge pump, which can drive up to five constant current white LEDs and get uniform brightness, and maintain the highest efficiency in the whole Li-Ion battery voltage range. MAX1570's fixed frequency is 1MHz, and it can select small external components. The optimized current regulation structure can ensure low EMI and low input ripple. It uses an external resistor to set full amount white LED current of MAX1570. Pulse-width modulation (PWM) signal can also be used to adjust the brightness of white LED.



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