HV9985
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 PWM dimming ratio up to 5000:1
- 10-40V input range
- Constant frequency operation up to 1.0MHz
- On-chip clock or external clock option
- Programmable slope pensation
- Linear and PWM dimming
- Output short circuit protection
- Output over voltage protection
- Hiccup mode protection
General Description
The HV9985 is a three-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 5.0V supply to power the IC. The switching frequencies of the three converters in the IC are controlled either with an external clock signal (the channels operate at a...
