PT2203--次侧控制恒流恒压控制IC

PT2203

Primary Side CC/CV Regulator

GENERAL DESCRIPTION
The PT2203-2204 series is primary side constant current/voltage regulator, PT2203 is targeted to 3-5W and PT2204 is targeted to 5-7W applications. This series 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 device to meet all the global energy efficiency and standby power requirements.
The device 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 variation. More over, the integrated output cord resistance compensation further enhances output voltage accuracy.
A complete set of integrated protection functions allows the device to protect against all fault conditions including output short circuit, line under-voltage, and over temperature shut down.
The PT2203-2204 is available in SOP8 package.

FEATURES

CC and CV Control Without Secondary Feed back
Eliminates Compensation Network
Integrates 600V Power switch
Standby power dissipation down to below30 mW
Compensates Line Voltage Variation
Compensates Inductor Variation in CC mode
Compensates Output Cable Resistance
VCC/FB Over Voltage Protection
VCC/FB UVLO
Output 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

TYPICAL APPLICATION CIRCUIT

型号/规格

PT2203

品牌/商标

上海华润矽威

供应PT2203--次侧控制恒流恒压控制IC