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OB2500N - High Precision CC/CV Primary-Side Power Switch

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.
  • Integrated 1A 650V MOSFET.
  • Good dynamic response.
  • Programmable CV and CC regulation.
  • Built-in primary winding inductance compensation.
  • Programmable cable drop compensation.
  • No need for control loop compensation.
  • Audio noise free operation.
  • Bui.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (OB2500N-On-BrightElectronics.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number OB2500N
Manufacturer On-Bright
File Size 801.95 KB
Description High Precision CC/CV Primary-Side Power Switch
Datasheet download datasheet OB2500N Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 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.