OB2520中文资料High Precision CC/CV Primary-side PWM Controller数据手册OB规格书

描述 Description

OB2520 is a high performance offline PSR controller 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.

特性 Features

·Ultra Low Standby Power
·＼5 Constant Voltage Regulation at Universal AC input
·High precision Constant Current Regulation at Universal AC input
·Primary-side Sensing and Regulation Without TL431 and Opto-coupler
·Programmable CV and CC Regulation
·Built-in Primary winding inductance compensation
·Programmable Cable Drop Compensation
·Driver BJT Switch
·Ultra Low Start-up Current (Typ. 1uA)
·VDD Over Voltage Protection
·Built-in Feedback Loop Open Protection
·Built-in Short Circuit Protection
·Built-in Leading Edge Blanking (LEB)
·Cycle-by-Cycle Current Limiting
·VDD Under Voltage Lockout with Hysteresis (UVLO)
·Available in SOT23-6 package, RoHS compliant

应用 Application

·Cell Phone Charger
·PMP Adapter/Charger
·Small Power Adapter
·Auxiliary Power for PC, TV etc.
·Linear Regulator/RCC Replacement