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OB2500P

On-Bright Electronics
Part Number OB2500P
Manufacturer On-Bright Electronics
Description High Precision CC/CV Primary-Side Power Switch
Published Apr 2, 2019
Detailed Description OB2500P High Precision CC/CV Primary-Side Power Switch GENERAL DESCRIPTION OB2500P is a high performance offline PSR po...
Datasheet PDF File OB2500P PDF File

OB2500P
OB2500P

Overview
OB2500P High Precision CC/CV Primary-Side Power Switch GENERAL DESCRIPTION OB2500P 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.
Device operates in PFM in CC mode at large load condition and it operates in PWM with frequency reduction at light/medium load.
The chip consumes very low operation current.
It achieves less than 75mW standby power to meet strict standby power standard.
OB2500P offers comprehensive protectio...


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