MAX16834AUP+ (MAXIM INTEGRATED PRODUCTS)

The MAX16834AUP+ is a high power LED driver with integrated high-side LED current sense and PWM dimming MOSFET driver in 20 pin TSSOP package. It is a current-mode high brightness LED (HB LED) driver for boost, boost-buck, SEPIC and high side buck topologies. In addition to driving an N-channel power MOSFET switch controlled by the switching controller, it also drives an N-channel PWM dimming switch to achieve LED PWM dimming. The MAX16834 integrates all the building blocks necessary to implement a fixed frequency HB LED driver with wide-range dimming control. The MAX16834 features constant-frequency peak current mode control with programmable slope compensation to control the duty cycle of the PWM controller. A dimming driver designed to drive an external N-channel MOSFET in series with the LED string provides wide-range dimming control up to 20KHz. In addition to PWM dimming, the MAX16834 provides analogue dimming using a DC input at REFI.