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ACT361 Datasheet(PDF) 1 Page - Active-Semi, Inc |
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ACT361 Datasheet(HTML) 1 Page - Active-Semi, Inc |
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1 / 14 page  Innovative Power TM - 1 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. Rev 8, 14-Nov-12 High Performance ActivePSR TM Primary Switching Regulator ACT361 VDD G BD SW FB CS INPUT OUTPUT FEATURES • Patented Primary Side Regulation Technology • No Opto-Coupler • Best-in-Class Constant Voltage, Constant Current Accuracy • Low EMI • Proprietary Fast Startup Circuit • Built-in Soft-Start Circuit • Integrated Line and Primary Inductance Compensation • Integrated Programmable Output Cord Resistance Compensation • Line Under-Voltage, Output Over-Voltage, Output Short-Circuit and Over-Temperature Protection • Complies with all Global Energy Efficiency and CEC Average Efficiency Standards • Adjustable power from 2W to 7W • Minimum External Components • Tiny SOT23-6 Package APPLICATIONS • Chargers for Cell Phones, PDAs, MP3, Portable Media Players, DSCs, and Other Portable Devices and Appliances • RCC Adapter Replacements • Linear Adapter Replacements • Standby and Auxiliary Supplies GENERAL DESCRIPTION The ACT361 belongs to the high performance patented ActivePSRTM Family of Universal-input AC/DC off-line controllers for battery charger and adapter applications. It is designed for flyback topology working in discontinuous conduction mode (DCM). The ACT361 meets all of the global energy efficiency regulations (CEC, European Blue Angel, and US Energy Star standards) while using very few external components. The ACT361 ensures safe operation with complete protection against all fault conditions. Built-in protection circuitry is provided for output short- circuit, output over-voltage, line under-voltage, and over temperature conditions. The ACT361 ActivePSRTM is optimized for high performance, cost-sensitive applications, and utilizes Active-Semi’s proprietary primary-side feedback architecture to provide accurate constant voltage, constant current (CV/CC) regulation without the need of an opto-coupler or reference device. Integrated line and primary inductance compensation circuitry provides accurate constant current operation despite wide variations in line voltage and primary inductance. Integrated output cord resistance compensation further enhances output accuracy. The ACT361 achieves excellent regulation and transient response, yet requires less than 150mW of standby power. The ACT361 is optimized for 2W to 7W applications. It is available in space-saving 6 pin SOT23-6 package. Figure 1: Simplified Application Circuit ACT361 |
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