Catalog
Synchronous Controller
Key Features
• Wide working range 5~20V
• Optimized for Resonant operation up to 600kHz
• Suitable for DCM, CCM, CrCM in Fly-back operation
• Minimum on-time and off-time to reduce turn-on/off oscillations
• Light Load Detection (LLD) for sleep mode
• Drain voltage rating of 200V
• Low component count
• Low Quiescent Current at 36µA (typ.)
Description
AI
The AR2003 is Active/Synchronous Rectification Controller, providing output voltage from 4.5V to 20V. Using internal drain-to-source voltage sensing, the AR2003 is ideal for Flyback, LLC-resonant and other power supply architectures. By using SFB pin, output voltage can be changed dynamically by changing the Output Voltage Control pin’s level.