HV9911 Overview
The HV9911 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buckboost, or SEPIC), in a constant frequency or constant off-time mode. The controller uses a peak current control scheme, (with programmable slope pensation), and includes an internal transconductance amplifier to control the output current in closed loop, enabling high output current accuracy. In the...
HV9911 Key Features
- Switch mode controller for single switch drivers
- Buck-boost
- Works with high side current sensing
- Closed loop control of output current
- High PWM dimming ratio
- Internal 250V linear regulator (can be extended
- Internal 2% voltage reference (0°C < TA < 85°C)
- Constant frequency or constant off-time operation
- Programmable slope pensation
- Enable & PWM dimming
