Microchip Technology HV9985
The HV9985 is a 3-channel Peak Current mode PWM controller for driving single-switch converters in a constant output Current mode. It can be used for driving either RGB LEDs or multiple channels of white LEDs. The HV9985 features a 40V linear regulator, which provides a 5V supply to power the IC.| Part No. | HV9985 |
|---|---|
| Datasheet | HV9985 Download |
| Manufacturer |  Microchip Technology |
| Description | LED Driver |
| Buy | Stock & Price |
FEATURES
● Switch Mode Controller for Single-Switch Converters● Gate Drivers Optimized for Driving Logic Level FETs - 0.25A Sourcing - 0.5A Sinking
● Typical ±2% Absolute and String-to-String Current Accuracy (with ±1% Sense Resistors)
● High Pulse-Width Modulation (PWM) Dimming Ratio up to 5000:1
● 10V to 40V Input Range
● Constant Frequency Operation up to 1 MHz
● On-Chip Clock or External Clock Option
● Programmable Slope Compensation
● Linear and PWM Dimming
● Output LED Short-Circuit Protection
● Output Overvoltage Protection
● Hiccup Mode Protection
APPLICATIONS
● RGB BacklightAPPLICATIONS
● Boost, Buck, and SEPIC Topologies● Multiple String White LED Driver
APPLICATIONS
GENERAL DESCRIPTION
The switching frequencies of the three converters in the IC are controlled either with an external clock signal (the channels operate at a switching frequency of 1/12th of the external clock frequency) or using the internal oscillator. The three channels are positioned 120° out-of-phase to reduce the input current ripple.
