OB2500N - High Precision CC/CV Primary-Side Power Switch
On-Bright
Download the OB2500N datasheet PDF.
This datasheet also covers the OB2500N-On variant, as both devices belong to the same high precision cc/cv primary-side power switch family and are provided as variant models within a single manufacturer datasheet.
General Description
OB2500N is a high performance offline PSR power switch for low power AC/DC charger and adapter applications.
It operates in primary-side sensing and regulation.
Consequently, opto-coupler and TL431 could be eliminated.
Key Features
Primary-side sensing and regulation without TL431 and opto-coupler.
High precision constant voltage and current regulation at universal AC input.
Multi-mode PWM/PFM operation for efficiency improving.
Note: The manufacturer provides a single datasheet file (OB2500N-On-BrightElectronics.pdf) that lists specifications for multiple related part numbers.
Full PDF Text Transcription for OB2500N (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
OB2500N. For precise diagrams, and layout, please refer to the original PDF.
OB2500N High Precision CC/CV Primary-Side Power Switch GENERAL DESCRIPTION OB2500N is a high performance offline PSR power switch for low power AC/DC charger and adapter ...
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ance offline PSR power switch for low power AC/DC charger and adapter applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below. In CC control, the current and output power setting can be adjusted externally by the sense resistor Rs at CS pin. In CV control, multi-mode operations are utilized to achieve high performance and high efficiency. In addition, good load regulation is achieved by the built-in cable drop compensation.
OB2500N Datasheet
