PMP4791, 55Vdc - 80Vdc Input, 2-Channel, 350mA LED Driver (10V to 50V String)
Conception de référence par: Texas Instruments
PMP4791, 55Vdc - 80Vdc Input, 2-Channel, 350mA LED Driver (10V to 50V String). The Reference design contains two duplicate LED drivers. Each circuit drives a 10V to 50V series connected string of LEDs at 350mA. The input range is 55 to 75 VDC. The TPS40210 boost controller is used in an upside-down buck topology for a simple, low-cost solution. This circuit includes an enable, PWM dimming, current trimming and a current sense functions for interfacing with an external Microprocessor
