摘要：该电路适应的雪崩光电二极管偏置电源IC （APDS）驱动高压的LED串，从而提供可调电流，软件关机，和逻辑开路故障指示。Maxim > App Notes > DISPLAY DRIVERS
Keywords: DACs, D/A converters, LED drivers, software-controlled light intensity Mar 14, 2005
APPLICATION NOTE 3445
High-Voltage LED Driver Provides Software-Controlled Intensity
Abstract: This circuit adapts a bias-supply IC for avalanche photodiodes (APDs) to drive a high-voltage string
of LEDs, thereby providing adjustable current, software shutdown, and logic indication of open-circuit faults.
Recent advances in operating efficiency have expanded the use of LEDs from mere indicators to being a driving
force in electronic lighting. Increased reliability and ruggedness (compared to other lighting technologies) gives
the LED a bright future, indeed. Many ICs have been introduced in recent years for driving LEDs, but the issue of
d……
