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OB2538

On-Bright Electronics
Part Number OB2538
Manufacturer On-Bright Electronics
Description High Precision CC/CV Primary-Side PWM Controller
Published May 3, 2015
Detailed Description On-Bright Confidential to ACT OB2538 High Precision CC/CV Primary-Side PWM Controller Product Specification GENERAL DE...
Datasheet PDF File OB2538 PDF File

OB2538
OB2538


Overview
On-Bright Confidential to ACT OB2538 High Precision CC/CV Primary-Side PWM Controller Product Specification GENERAL DESCRIPTION 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.
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 reg...



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