OB2578T
Description
OB2578T is an excellent primary side regulation power switch with CC/CV operation for medium level power AC/DC charger and adapter applications.
Key Features
- Primary-side sensing and regulation operates in CCM/QR mode without TL431 and opto-coupler
- High precision constant voltage and current regulation at universal AC input
- Fixed frequency (65kHz) CCM mode operation with low line voltage at full load
- Integrated 4A MOSFET
- Quasi-resonant operation for high efficiency in
- Programmable CV and CC regulation
- Good dynamic response
- Built-in line pensation for tight CC
- Built-in fixed cable pensation
- Built-in primary winding inductance
Applications
- Cell phone charger
