Microchip Technology HV9989
HV9989 is a three-channel peak current mode PWM controller designed to drive single switch converters in a constant-output current mode. It can be used for driving either RGB LEDs or multiple channels of white LEDs.| Part No. | HV9989 |
|---|---|
| Datasheet | HV9989 Download |
| Manufacturer |  Microchip Technology |
| Description | Three-Channel CCM/DCM Boost LED Driver |
| Buy | Stock & Price |
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-lightingDESCRIPTION
HV9989 features a proprietary PWM-dimming control algorithm that achieves a dimming pulse of a few hundred nanoseconds from a Continuous-Conduction Mode (CCM) or Discontinuous-
