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.
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
Applications:
◆ Cell Phone Charger ◆ PMP Adapter/Charger ◆ Small Power Adapter ◆ Auxiliary Power for PC, TV etc. ◆ Linear Regulator/RCC Replacement
Device | Driver Switch | Max Pout(W) (85~264V) | OB2520 | BJT | 5 | OB2520D | BJT | 5 | OB2520M | MOSFET | 8 |
Typical Application:
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