EA411US

EA411US Datasheet


Part Datasheet
EA411US EA411US EA411US (pdf)
Related Parts Information
ACT411US-T ACT411US-T ACT411US-T
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ACT411

ActivePSRTM Quasi-Resonant PWM Controller
• Patented Primary Side Regulation

Technology
• Quasi-Resonant Operation
• Adjustable up to 120kHz Switching

Frequency
• +/-5% Output Voltage Regulation
• Accurate OCP/OLP Protection
• Integrated Output Cord Compensation
• Integrated Line and Primary Inductance

Compensation
• Built-in Soft-Start Circuit
• Line Under-Voltage, Thermal, Output Over-
voltage, Output Short Protections
• Current Sense Resistor Short Protection
• Transformer Short Winding Protection
• Less than 100mW Standby Power
• Complies with Global Energy Efficiency and

CEC Average Efficiency Standards
• Tiny SOT23-6 Packages
and overload conditions, it would enter auto restart mode including cycle-by-cycle current limiting.

ACT411 is to achieve no overshoot and very short rise time even with big capacitive load 4000µF with the built-in fast and soft start process,

The Quasi-Resonant QR operation mode can effectively improve efficiency, reduce the EMI noise and further reduce the components in input filter.

ACT411 is idea for application up to 36 Watt.

Figure 1 Simplified Application Circuit
• AC/DC Adaptors/Chargers for ADSL, PDAs,

E-books
• Adaptors for Portable Media Player, DSCs,
and Other

The ACT411 is a high performance peak current mode PWM controller which applies ActivePSRTM and ActiveQRTM technology. ACT411 achieves accurate voltage regulation without the need of an opto-coupler or reference device.

The ACT411 is designed to achieve less than 100mW Standby Power. By applying frequency fold back and ActiveQRTM technology, ACT411 exceeds the latest ES2.0 efficiency standard.

ACT411 integrates comprehensive protection. In case of over temperature, over voltage, short winding, short current sense resistor, open loop

Innovative PowerTM

ActivePSRTM is a trademark of Active-Semi.

Copyright 2014 Active-Semi, Inc.

ACT411
ORDERING INFORMATION

TEMPERATURE RANGE

PACKAGE

PINS

PACKING METHOD

OPTION DC CORD %

TOP MARK

ACT411US-T
-40°C to 85°C

SOT23-6
6 TUBE & REEL

FRYT

PIN CONFIGURATION

PIN DESCRIPTIONS

SOT23-6 ACT411US

PIN NAME

Current Sense Pin. Connect an external resistor RCS between this pin and ground to set peak current limit for the primary switch.

GND Ground.

GATE Drive. Gate driver for the external MOSFET transistor.

VDD Power Supply. This pin provides bias power for the IC during startup and steady state operation.

FB Feedback Pin. Connect this pin to a resistor divider network from the auxiliary winding.

COMP Compensation Pin.

Innovative PowerTM

ActivePSRTM is a trademark of Active-Semi.

Copyright 2014 Active-Semi, Inc.

ACT411

ABSOLUTE MAXIMUM RATINGSc

PARAMETER

FB, CS, COMP to GND VDD, GATE to GND Maximum Power Dissipation SOT23-6

VALUE
to + 6 to + 22

UNIT

Operating Junction Temperature
-40 to 150

Junction to Ambient Thermal Resistance Operating Junction Temperature
220 -40 to 150

Storage Temperature
-55 to 150

Lead Temperature Soldering, 10 sec
c Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods.

ELECTRICAL CHARACTERISTICS
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Datasheet ID: EA411US 522391