19-2761; Rev 0; 1/03 EVAALVUAAILTAIOBNLEKIT
Ultra-High-Efficiency White LED Drivers
MAX1984/MAX1985/MAX1986
General 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 accommodates 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 effic...