ACT364 Active-Semi Product Brief, 15-Apr-11 High Performance ActivePSRTM Primary Switching Regulator FEATURES few external components. • Patented Primary Side Regulation 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. Technology • No Opto-Coupler • Suitable Operation Frequency up to 85kHZ • Best-in-Class Constant Voltage, Constant 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. 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 The ACT364 is optimized for compact size 2W to 6.3W charger applications. It is available in spacesaving 6 pin SOT23-6 package. • 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 Figure 1: Simplified Application Circuit 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. ACT364 Product Brief, 15-Apr-11 ORDERING INFORMATION PART NUMBER TEMPERATURE RANGE PACKAGE PINS PACKING METHOD TOP MARK ACT364US-T -40°C to 85°C SOT23-6 6 TAPE & REEL FSCS PIN CONFIGURATION 1 G 2 BD 3 FSCR FSCS SW 6 CS 5 FB 4 VDD SOT23-6 ACT364US-T PIN DESCRIPTIONS PIN NAME 1 SW 2 G 3 BD 4 VDD 5 FB Feedback Pin. Connect this pin to a resistor divider network from the auxiliary winding. 6 CS 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 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. -2- www.active-semi.com Copyright © 2011 Active-Semi, Inc. ACT364 Product Brief, 15-Apr-11 Figure 3: Universal VAC Input, 5V/1A Output Charger Table 1: ACT364 Bill of Materials ITEM REFERENCE 1 U1 2 C1, C2 3 DESCRIPTION QTY MANUFACTURER IC, ACT364US-T, SOT23-6 1 Active-Semi Capacitor, Electrolytic, 4.7µF/400V, 8 × 12mm 2 KSC C3 Capacitor, Ceramic,1000pF/500V,1206,SMD 1 POE 4 C4 Capacitor, Electrolytic, 4.7µF/35V, 5 × 11mm 1 KSC 5 C5 Capacitor, Electrolytic, 680µF/10V, 8 × 12mm 1 KSC 6 C9 Capacitor, Ceramic,1000pF/50V,0805,SMD 1 POE 7 BD1 Bridge,B6S,600V/0.5A,MDI,SMD 1 PANJIT 8 D5,D6 Diode, Ultra Fast, FR107,1000V/1.0A, DO-41 2 Good-Ark 9 D8 Diode, Schottky, 40V/3A, SB340, DO-15 1 Good-Ark 10 L1 Axial Inductor, 1.5mH, 0410, DIP 1 Amode Tech 11 Q1 Transistor, NPN, 700V,1.5A, D13003, TO-126 1 Huawei 12 FR1 Fusible Resistor, 1W, 10Ω, 5% 1 TY-OHM 13 R1,R4 Chip Resistor, 22Ω, 0805, 5% 2 TY-OHM 14 R2 Chip Resistor, 750k, 1206, 5% 1 TY-OHM 15 R3 Chip Resistor, 470Ω, 1206, 5% 1 TY-OHM 16 R5 Chip Resistor, 49.9k, 0805, 1% 1 TY-OHM 17 R6 Chip Resistor, 8.87k, 0805, 1% 1 TY-OHM 18 R7,R8 Chip Resistor, 5.1MΩ, 1206, 5% 2 TY-OHM 19 R9 Chip Resistor, 1.0Ω, 1206, 1% 1 TY-OHM 20 R10 Chip Resistor, 162k, 0805, 5% 1 TY-OHM 21 R11 Chip Resistor, 1.1k, 0805, 5% 1 TY-OHM 22 R13 Chip Resistor, 10Ω, 0805, 5% 1 TY-OHM 23 T1 Transformer, LP = 1.5mH±7%, EFD15 1 Innovative PowerTM -3- www.active-semi.com Copyright © 2011 Active-Semi, Inc.