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Partname: | MAX1984 |
Description: | Ultra-High-Efficiency White LED Drivers |
Manufacturer: | Maxim Integrated Products |
Datasheet: | PDF (333K). Click here to download *) |
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 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. |
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 Click here to download MAX1984 Datasheet*) |
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