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发布者:微桥 发布时间:2011/11/24 阅读:4835次    关键字: AC-DC
PT2204-Primary Side CC/CV Regulator


PT2204-Primary Side CC/CV RegulatorPDF文档下载

GENERAL DESCRIPTION
    The PT2204 is a primary side constant current/voltage regulator, targeted to sub 4W AC-DC power suppliers applications. It is designed for the flyback topology,
and regulates output current/voltage without the secondary feedback loop. In addition to providing the tight output regulation, the excellent low power control
allows the PT2204 to meet all the global energy efficiency and standby power requirements.
    The PT2204 provides accurate CV/CC regulation with built in compensation circuitry. Integrated line and primary inductance compensation ensures output
current free of line voltage and primary inductance variations. More over, the integrated output cord resistance compensation further enhances output
voltage accuracy. A complete set of integrated protection functions allows
    the PT2204 to protect against all fault conditions including output short circuit, line under-voltage, and over temperature shut down.
    The PT2204 is available in a SOP8 package.

FEATURES
􀁺 CC and CV Control Without Secondary Feed back
􀁺 Eliminates Compensation Network
􀁺 Standby power dissipation down to30 mW
􀁺 Integrates 600V Power switch
􀁺 Compensates Line Voltage Variation
􀁺 Compensates Inductor Variation in CC mode
􀁺 Compensates Output Cable Resistance
􀁺 VCC/FB Over Voltage Protection
􀁺 Short Circuit Protection
􀁺 Line Under Voltage Protection
􀁺 Cycle by Cycle Current Limit
􀁺 Over Temperature Protection

APPLICATIONS
􀁺 AC-DC RCC chargers replacement
􀁺 Power Adapters and Battery Chargers
􀁺 Standby and Auxiliary Suppliers

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