ETA8047 ETA | Alldatasheet

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Technical content

www.etasolution.com 1 Powering Minds of the Smart Green-Mode Quasi-Resonant PWM Controller for Fly-Back Converters DESCRIPTION FEATURES ETA8047 is a high performance peak current mode PWM controller. ETA8047 employs Quasi-Resonant and frequency foldback technique to reduce EMI and improve average efficiency and meets the latest Level VI efficiency standard with enough margin. Its burst mode operation enables low standby power with small output voltage ripple. And it achieves very low standby power, good dynamic response and accurate voltage regulation with an opto-coupler and the secondary side control circuit. With build-in fast start process, ETA8047 can get output voltage very short rise time even with a big capacitive load. And a soft start circuit keeps output voltage no overshoot at power up. In full load conditions, ETA8047 can work in both CCM mode and DCM mode to meet different types of applications. Quasi -Resonant (QR) function works all the time in DCM modes. ETA8047 can be directly used for Quick-Charger Class A solution because of its 7-37V wide VCC operation voltage range. ETA8047 integrates comprehensive protection. In case of over temperature, input/output over voltage, winding short, current sense resistor short, open loop , output short, over load and over current conditions, it would enter into auto restart if recovering from fault mode. Cycle-by-Cycle current limiting ensures safe operation even during fault mode and recovering. ETA8047 is for applications up to 50 Watts. ETA8047 is in a tiny SOT23-6 package.  Quasi-Resonant and CCM Operation  7-37V VCC Widely Operation Voltage Range  Very Low Standby Power Consumption  OCP/OLP/OSP Protection  Current Sense Resistor Short Protection  Transformer Winding Short Protection  Integrates Comprehensive Protection  Built-in Soft-Start and Fast-Start Circuit  Gate Output Voltage Clamped at 12V  Built-in Adjustable Slope Compensation  Complies with DOE VI and CEC V5 Average Efficiency Standards  Tiny SOT23-6 Package

APPLICATIONS

 Conventional Adapter  Quick-Charge Adapter  USB PD Adaptors  Replacements for linear transformers and RCC SMPS TYPICAL APPLICATION ORDERING INFORMATION PART No. PACKAGE TOP MARK Pcs/Reel ETA8047S2G SOT23-6 NH7H 3000