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ETA3428B Datasheet(PDF) 1 Page - ETA SOLUTIONS CO. LIMITED |
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ETA3428B Datasheet(HTML) 1 Page - ETA SOLUTIONS CO. LIMITED |
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1 / 1 page  ETA3428B www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute 1 3A 3MHz Synchronous Step-Down DC-DC in DFN3X3-10 FEATURES High Efficiency: Up to 95% Capable of Delivering 3A Up to 3MHz Switching Frequency No External Schottky Diode Needed Low dropout 100% Duty operation Low Noise PWM control Programmable Frequency and Compensation Network Internal Soft-Start Logic Control Shutdown (IQ<1uA) Thermal shutdown and UVLO Available in DFN-10 APPLICATIONS Portable Devices Cellular Base Stations Networking and Telecommunications 3G wireless Cards USB supplied Devices in Notebooks DESCRIPTION The ETA3428B is a high-efficiency, DC-to-DC step-down switching regulators, capable of delivering up to 3A of output current. The device operates from an input voltage range of 2.6V to 5.5V and provides an output voltage from 0.8V to VIN, making the ETA3428B ideal for low voltage power conversions. External programmable frequency and compensation network of the ETA3428B enable system designers to make trade off according to different requirements such as board space, output transient response and efficiency. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improves design reliability. ETA3428B is housed in a DFN-10 Package ORDERING INFORMATION PART PACKAGE PIN TOP MARK ETA3428BD3K-T ETA3428BD3K-U DFN3x3-10 ETA8521B-Product Number YWWPL Date Code Distributed Power Systems TYPICAL APPLICATION SHDN/RT GND FB PVDD SW VOUT VIN 5V 47uF 2.2uH 47uF 220pF VDD PGND COMP 510K 180K 240K 47K |
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