HFC0300HS Overview
HFC0300 is a variable off-time controller that uses a fixed-peak current technique to decrease its frequency as the load lightens. As a result, it offers excellent efficiency at light-load while optimizing the efficiency under other load conditions. When the frequency decreases to threshold, the peak current decreases with the decreasing load to prevent mechanical resonance in the transformer.
HFC0300HS Key Features
- Variable Off-Time, Current Mode Control
- Frequency Foldback as Load Lightens
- Peak-Current pression to Reduce
- Active-Burst Mode for Low Standby Power
- Internal High-Voltage Current Source
- Internal 200ns Leading Edge Blanking
- VCC Under-Voltage Lockout with Hysteresis
- Over-Voltage Protection on VCC Pin
- Timer-Based Overload Protection
- Short-Circuit Protection
HFC0300HS Applications
- Battery Charger for Portable Electronics