HV9989
Three-Channel CCM/DCM Boost LED Driver with Sub-Microsecond PWM Dimming
Features
• Three out-of-phase constant-current boost converters
• Current loop closed, with sub-microsecond PWMdimming pulses, supports PWM dimming 20 kHz
• Internal 40V linear
regulator • External clock input • External individual reference inputs • Individual PWM dimming inputs • Programmable slope compensation • +0.
2A/-0.
4A gate drivers • Independent short circuit protection with hiccup
for each channel • Latching output open-circuit protection
Applications
• LCD panel back-lighting
Description
HV9989 is a three-channel peak current mode PWM controller designed to drive single switch converters in a constan...