ACT364 Rev 4, 14-Nov-12 TM High Performance ActivePSR Primary Switching Regulator few external components. FEATURES The ACT364 ensures safe operation with complete Patented Primary Side Regulation protection against all fault conditions. Built-in Technology protection circuitry is provided for output short- No Opto-Coupler circuit, output over-voltage, line under-voltage, and over temperature conditions. Suitable Operation Frequency up to 85kHZ TM The ACT364 ActivePSR is optimized for high Best-in-Class Constant Voltage, Constant performance, cost-sensitive applications, and Current Accuracy utilizes Active-Semis proprietary primary-side Low EMI feedback architecture to provide accurate constant voltage, constant current (CV/CC) regulation Proprietary Fast Startup Circuit without the need of an opto-coupler or reference Built-in Soft-Start Circuit device. Integrated line and primary inductance Integrated Line and Primary Inductance compensation circuitry provides accurate constant current operation despite wide variations in line Compensation voltage and primary inductance. Integrated output Integrated Programmable Output Cord cord resistance compensation further enhances Resistance Compensation output accuracy. The ACT364 achieves excellent Line Under-Voltage, Output Over-Voltage, regulation and transient response, yet requires less Output Short-Circuit and Over-Temperature than 150mW of standby power. Protection The ACT364 is optimized for compact size 2W to Complies with all Global Energy Efficiency 6.3W charger applications. It is available in space- and CEC Average Efficiency Standards saving 6 pin SOT23-6 package. Adjustable Power from 2W to 6.3W Figure 1: Minimum External Components Simplified Application Circuit 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 ACT364 belongs to the high performance TM patented ActivePSR 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 ACT364 meets all of the global energy efficiency regulations (CEC, European Blue Angel, and US Energy Star standards) while using very TM Innovative Power - 1 - www.active-semi.com Copyright 2012 Active-Semi, Inc. ACT364 Rev 4, 14-Nov-12 ORDERING INFORMATION PACKING PART NUMBER TEMPERATURE RANGE PACKAGE PINS TOP MARK METHOD ACT364US-T -40C to 85C SOT23-6 6 TAPE & REEL FSCS PIN CONFIGURATION SOT23-6 ACT364US-T PIN DESCRIPTIONS PIN NAME DESCRIPTION Switch Drive. Switch node for the external NPN transistor. Connect this pin to the external power 1 SW NPNs emitter. This pin also supplies current to VDD during startup. 2 GND Ground. 3 BD Base Drive. Base driver for the external NPN transistor. 4 VDD Power Supply. This pin provides bias power for the IC during startup and steady state operation. 5 FB Feedback Pin. Connect this pin to a resistor divider network from the auxiliary winding. Current Sense Pin. Connect an external resistor (R ) between this pin and ground to set peak CS 6 CS current limit for the primary switch. The peak current limit is set by (0.396V 0.9) / R . For more CS detailed information, see Application Information. TM Innovative Power - 2 - www.active-semi.com Copyright 2012 Active-Semi, Inc.