MAX1986
MAX1986 is Ultra-High-Efficiency White LED Drivers manufactured by Maxim Integrated.
- Part of the MAX1984 comparator family.
- Part of the MAX1984 comparator family.
Description
The MAX1984/MAX1985/MAX1986 are white light-emitting diode (LED) drivers that use individual regulators to control the current of up to eight LEDs. A high-efficiency step-up regulator generates just enough voltage to keep all the current regulators in regulation. A versatile dimming interface acmodates analog, digitally adjusted pulse-width modulation (DPWM), or parallel control.
The individual current regulators allow good current matching between LEDs. Open or shorted LEDs cannot affect the performance of other LEDs.
The step-up regulator achieves high efficiency by using synchronous rectification. The internal N-channel switch and P-channel synchronous rectifier eliminate the need for external MOSFETs and diodes. The 1MHz switching frequency allows the use of low-profile inductors and ceramic capacitors.
The brightness can be easily adjusted using a...
