OB3639A Overview
Description
OB3639A is an offline LED lighting controller with high power factor, low THD and high constant current (CC) precision. It can achieve low system cost for an isolated lighting application by primary side control in a single stage converter.
Key Features
- High PF (>0.9)
- Low THD (<10%)
- Programmable VIN foldback
- Programmable VIN OVP
- Programmable thermal foldback
- High precision constant current
- Fast start-up (<0.5s)
- Low system cost and high efficiency
- Quasi-resonant operation
- Programmable CC regulation
