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RS2136PP Datasheet(PDF) 1 Page - Orister Corporation |
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RS2136PP Datasheet(HTML) 1 Page - Orister Corporation |
1 / 10 page Page No. : 1/10 DS‐RS2136‐03 September, 2009 www.Orister.com RS2136 High Precision CC/CV Primary‐Side PWM Power Switch General Description RS2136 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 431 could be eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the Fig.1. 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 as well at large load condition and it operates in PWM with frequency reduction at light/medium load. RS2136 offers power on soft start control and protection coverage with auto‐recovery features including Cycle‐by‐Cycle current limiting, VDD OVP, VDD clamp and UVLO. Excellent EMI performance is achieved with Frequency Jiggling. Features Applications ● 5% Constant Voltage Regulation, 5% Constant Current Regulation at Universal AC input ● Primary‐side Sensing and Regulation Without 431 and Opto‐ coupler ● Power on Soft‐start ● Built‐in Leading Edge Blanking (LEB) ● Cycle‐by‐Cycle Current Limiting ● VDD Under Voltage Lockout with Hysteresis (UVLO) ● Programmable CV and CC Regulation ● Adjustable Constant Current and Output Power Setting ● Built‐in Secondary Constant Current Control with Primary Side Feedback ● Built‐in adaptive current peak regulation ● Built‐in Primary winding inductance compensation ● Program cable drop compensation ● VDD OVP and VDD Clamp ● Available in an DIP‐8 Package ● RoHS Compliant and 100% Lead (Pb)‐Free and Green (Halogen Free with Commercial Standard) ● Cell Phone Charger ● Digital Cameras Charger ● Small Power Adaptor ● Auxiliary Power for PC, TV etc. ● Linear Regulator/RCC Replacement Fig.1. Typical CC/CV Curve |
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