HV9911 Overview
The HV9911 is an LED driver IC designed to control single-switch PWM converters (buck, boost, buck-boost and 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 Constant Frequency mode,...
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 Pulse-Width Modulation (PWM) Dimming
- Internal 250V Linear Regulator (can be extended
- Internal 2% Voltage Reference (0°C < TA < 85°C)
- Constant Frequency or Constant Off-time
- Programmable Slope pensation
- Logic Input for Enable and PWM Dimming
