OB2538 Overview
OB2538 is a high performance offline PWM Power switch for low power AC/DC charger and adaptor applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated.
OB2538 Key Features
- 5% Constant Voltage Regulation, 5% Constant Current Regulation at Universal AC input
- Primary-side Sensing and Regulation Without TL431 and Opto-coupler
- Programmable CV and CC Regulation
- Adjustable Constant Current and Output
- Built-in Secondary Constant Current Control
- Built-in Adaptive Current Peak Regulation
- Built-in Primary winding inductance
- Programmable Cable drop pensation
- Power on Soft-start
- Built-in Leading Edge Blanking (LEB)