ACT364US-T

Active-Semi FEATURES • Patented Primary Side Regulation Technology ACT364 Product Brief, 15-Apr-11 few external components. The ACT364 ensures safe operation with complete protection against all fault conditions. Built-in protection circuitry is provided for output shortcircuit, output over-voltage, line under-voltage, and over temperature conditions. The ACT364 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 ACT364 achieves excellent regulation and transient response, yet requires less than 150mW of standby power. The ACT364 is optimized for compact size 2W to 6.3W charger applications. It is available in spacesaving 6 pin SOT23-6 package. Figure 1: Simplified Application Circuit High Performance ActivePSRTM Primary Switching Regulator • No Opto-Coupler • Suitable Operation Frequency up to 85kHZ • 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 Resistance Compensation • Integrated Programmable Output Cord • 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 6.3W • 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 ACT364 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 ACT364 meets all of the global energy efficiency regulations (CEC, European Blue Angel, and US Energy Star standards) while using very Innovative PowerTM ActivePSRTM is a trademark of Active-Semi. -1- www.active-semi.com Copyright © 2011 Active-Semi, Inc. Product Brief, 15-Apr-11 ACT364 ORDERING INFORMATION PART NUMBER ACT364US-T TEMPERATURE RANGE -40°C to 85°C PACKAGE SOT23-6 PINS 6 PACKING METHOD TAPE & REEL TOP MARK FSCS PIN CONFIGURATION SW 1 6 CS FSCR FSCS G 2 5 FB BD 3 4 VDD SOT23-6 ACT364US-T PIN DESCRIPTIONS PIN 1 2 3 4 5 6 NAME SW G BD VDD FB CS DESCRIPTION Switch Drive. Switch node for the external NPN transistor. Connect this pin to the external power NPN’s emitter. This pin also supplies current to VDD during startup. Ground. Base Drive. Base driver for the external NPN transistor. Power Supply. This pin provides bias power for the IC during startup and steady state operation. Feedback Pin. Connect this pin to a resistor divider network from the auxiliary winding. Current Sense Pin. Connect an external resistor (RCS) between this pin and ground to set peak current limit for the primary switch. The peak current limit is set by (0.396V × 0.9) / RCS. For more detailed information, see Application Information. Innovative PowerTM -2- www.active-semi.com Copyright © 2011 Active-Semi, Inc. Product Brief, 15-Apr-11 Figure 3: Universal VAC Input, 5V/1A Output Charger ACT364 Table 1: ACT364 Bill of Materials ITEM 1 2 REFERENCE U1 C1, C2 C3 C4 DESCRIPTION IC, ACT364US-T, SOT23-6 Capacitor, Electrolytic, 4.7µF/400V, 8 × 12mm Capacitor, Ceramic,1000pF/500V,1206,SMD Capacitor, Electrolytic, 4.7µF/35V, 5 × 11mm Capacitor, Electrolytic, 680µF/10V, 8 × 12mm Capacitor, Ceramic,1000pF/50V,0805,SMD Bridge,B6S,600V/0.5A,MDI,SMD Diode, Ultra Fast, FR107,1000V/1.0A, DO-41 Diode, Schottky, 40V/3A, SB340, DO-15 Axial Inductor, 1.5mH, 0410, DIP Transistor, NPN, 700V,1.5A, D13003, TO-126 Fusible Resistor, 1W, 10Ω, 5% Chip Resistor, 22Ω, 0805, 5% Chip Resistor, 750k, 1206, 5% Chip Resistor, 470Ω, 1206, 5% Chip Resistor, 49.9k, 0805, 1% Chip Resistor, 8.87k, 0805, 1% Chip Resistor, 5.1MΩ, 1206, 5% Chip Resistor, 1.0Ω, 1206, 1% Chip Resistor, 162k, 0805, 5% Chip Resistor, 1.1k, 0805, 5% Chip Resistor, 10Ω, 0805, 5% Transformer, LP = 1.5mH±7%, EFD15 -3- QTY 1 2 MANUFACTURER Active-Semi KSC POE KSC KSC POE PANJIT Good-Ark Good-Ark Amode Tech Huawei TY-OHM TY-OHM TY-OHM TY-OHM TY-OHM TY-OHM TY-OHM TY-OHM TY-OHM TY-OHM TY-OHM 3 4 1 1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 C5 C9 BD1 D5,D6 D8 L1 Q1 FR1 R1,R4 R2 R3 R5 R6 R7,R8 R9 R10 R11 R13 T1 1 1 1 2 1 1 1 1 2 1 1 1 1 2 1 1 1 1 1 19 20 21 22 23 Innovative PowerTM www.active-semi.com Copyright © 2011 Active-Semi, Inc.