HV9911 Overview
Key Specifications
Package: SOIC
Mount Type: Surface Mount
Pins: 16
Max Voltage (typical range): 250 V
Description
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 compensation), and includes an internal transconductance amplifier to control the output current in closed loop, enabling high output current accuracy.
Key Features
- Switch mode controller for single switch drivers
- Works with high side current sensing
- Closed loop control of output current
- High PWM dimming ratio
- Internal 250V linear regulator (can be extended using external Zener diodes)
- Internal 2% voltage reference (0°C < TA < 85°C)
- Constant frequency or constant off-time operation
- Programmable slope compensation
- Enable & PWM dimming
- +0.2A/-0.4A GATE drive
