Microchip Technology HV9982
HV9982 is a three-channel, closed loop, peak-current mode PWM controller designed to drive a constant output current. It can be used for driving either RGB LEDs or multiple channels of white LEDs. The switching frequencies of the three converters are controlled by an externFEATURES
● Switch mode controller for single-switch converters● Closed loop control of output current - Buck - Boost - SEPIC
● High PWM dimming ratio
● Internal 40V linear regulator
● Constant frequency operation
● Programmable slope compensation
● Linear and PWM dimming
● +0.2A/-0.4A gate drives for the switching FETs
● Output short circuit protection
● Output over voltage protection
● Hiccup-mode protection
● Analog control of PWM dimming
APPLICATIONS
● RGB backlight applications● Multiple string, white-LED driver applications
DESCRIPTION
HV9982 includes a 40V linear regulator which provides an 8.0V supply to power the IC.