OB2500P Datasheet (data sheet) PDF





OB2500P Datasheet, High Precision CC/CV Primary-Side Power Switch

OB2500P   OB2500P  

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OB2500P High Precision CC/CV Primary-Sid e Power Switch GENERAL DESCRIPTION OB2 500P is a high performance offline PSR power switch for low power AC/DC charge r and adapter applications. It operates in primary-side sensing and regulation . Consequently, opto-coupler and TL431 could be eliminated. Proprietary Consta nt Voltage (CV) and Constant Current (C C) control is integrated as shown in th e figure below. In CC control, the curr ent and output power setting can be adj usted externally by the sense resistor Rs at CS pin. In CV control, multi-mode operations are utilized to achieve hig h performance and high efficiency. In a ddition, good load regula

OB2500P Datasheet, High Precision CC/CV Primary-Side Power Switch

OB2500P   OB2500P  
tion is achieved by the built-in cable d rop compensation. Device operates in PF M in CC mode at large load condition an d it operates in PWM with frequency red uction at light/medium load. The chip c onsumes very low operation current. It achieves less than 75mW standby power t o meet strict standby power standard. O B2500P offers comprehensive protectio








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