EA337SH

EA337SH Datasheet

Part	Datasheet
EA337SH	EA337SH (pdf)

Related Parts	Information
ACT337SH-T	ACT337SH-T

PDF Datasheet Preview
High Performance ActivePSRTM Primary Switching Regulator • Ultra Low Standby Power < 30mW • Patented Primary Side Regulation Technology • Suitable Operation Frequency up to 85kHZ • Proprietary Fast Startup 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 7W to 12W • Minimum External Components • SOP-8 Package 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 ACT337 achieves excellent regulation and transient response, yet requires less than 30mW of standby power. The ACT337 is optimized for compact size 7W to 12W charger applications. It is available in spacesaving 8 pin SOP-8 package. Figure 1: Simplified Application Circuit • RCC Adapter Replacements • Linear Adapter Replacements • Standby and Auxiliary Supplies The ACT337 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 ACT337 meets all of the global energy efficiency regulations CEC, European Blue Angel, and US Energy Star standards while using very few external components. The ACT337 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 ACT337 ActivePSRTM is optimized for high performance, cost-sensitive applications, and Innovative PowerTM Copyright 2012 Active-Semi, Inc. ACT337 ORDERING INFORMATION PART NUMBER TEMPERATURE RANGE ACT337SH-T -40°C to 85°C PACKAGE PINS SOP-8 PACKING METHOD TAPE & REEL TOP MARK ACT337SH PIN CONFIGURATION ACT337SH SOP-8 ACT337SH PIN DESCRIPTIONS PIN SOP-8 1 2,4,7 NAME SW GND BD VDD FB 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 2,4 and 7 pin must be connected together . 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 x / RCS. For more detailed information, see Application Information. Innovative PowerTM Copyright 2012 Active-Semi, Inc. ACT337 ABSOLUTE MAXIMUM RATINGSc PARAMETER VDD, BD, SW to GND Maximum Continuous VDD Current FB, CS to GND Continuous SW Current Maximum Power Dissipation derate above TA = Junction to Ambient Thermal Resistance Operating Junction Temperature Storage Junction Lead Temperature Soldering, 10 sec VALUE to + 28 100 to + 6 Internally limited 150 -40 to 150 -55 to 150 300 UNIT V mA V A W c Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability. ELECTRICAL CHARACTERISTICS VDD = 12V, VOUT = 5V, LP = 1.25mH, NP = 110, NS = 8, NA = 18, TA = 25°C, unless otherwise specified. PARAMETER Supply VDD Turn-On Voltage VDD Turn-Off Voltage Supply Current Start Up Supply Current BD Current during Startup Internal Soft Startup Time Oscillator

PDF Datasheet Preview

High Performance ActivePSRTM Primary Switching Regulator
• Ultra Low Standby Power < 30mW
• Patented Primary Side Regulation

Technology
• Suitable Operation Frequency up to 85kHZ
• Proprietary Fast Startup 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 7W to 12W
• Minimum External Components
• SOP-8 Package
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 ACT337 achieves excellent regulation and transient response, yet requires less than 30mW of standby power.

The ACT337 is optimized for compact size 7W to 12W charger applications. It is available in spacesaving 8 pin SOP-8 package.

Figure 1:

Simplified Application Circuit
• RCC Adapter Replacements
• Linear Adapter Replacements
• Standby and Auxiliary Supplies

The ACT337 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 ACT337 meets all of the global energy efficiency regulations CEC, European Blue Angel, and US Energy Star standards while using very few external components.

The ACT337 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 ACT337 ActivePSRTM is optimized for high performance, cost-sensitive applications, and

Innovative PowerTM

Copyright 2012 Active-Semi, Inc.

ACT337
ORDERING INFORMATION

PART NUMBER TEMPERATURE RANGE

ACT337SH-T
-40°C to 85°C

PACKAGE PINS

SOP-8

PACKING METHOD

TAPE & REEL

TOP MARK

ACT337SH

PIN CONFIGURATION

ACT337SH

SOP-8 ACT337SH

PIN DESCRIPTIONS

PIN SOP-8
1 2,4,7

NAME

SW GND BD VDD FB

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 2,4 and 7 pin must be connected together .

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 x / RCS. For more detailed information, see Application Information.

Innovative PowerTM

Copyright 2012 Active-Semi, Inc.

ACT337

ABSOLUTE MAXIMUM RATINGSc

PARAMETER

VDD, BD, SW to GND Maximum Continuous VDD Current FB, CS to GND Continuous SW Current Maximum Power Dissipation derate above TA = Junction to Ambient Thermal Resistance Operating Junction Temperature Storage Junction Lead Temperature Soldering, 10 sec

VALUE
to + 28 100
to + 6 Internally limited
150 -40 to 150 -55 to 150 300

UNIT

V mA V A W
c Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

VDD = 12V, VOUT = 5V, LP = 1.25mH, NP = 110, NS = 8, NA = 18, TA = 25°C, unless otherwise specified.

PARAMETER

Supply VDD Turn-On Voltage VDD Turn-Off Voltage Supply Current Start Up Supply Current BD Current during Startup Internal Soft Startup Time Oscillator

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Datasheet ID: EA337SH 522344