钰泰 ETA3428D3K 同步降压开关稳压器芯片

　　DESCRIPTION

　　The ETA3428 is a high-efficiency, DC-to-DCstep-down switching regulators, capable of delivering up to 3A of output current. The device operates from an input voltage range of 3.6V to 5.5V and provides an output voltage from 0.8V to VIN, making the ETA3428 ideal for low voltage power conversions. External programmable frequency and compensation network of the ETA3428 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.

　　ETA3428 is housed in a DFN-10 Package

　　FEATURES

　　High Efficiency: Up to 95%

　　Capable of Delivering 3A

　　Up to 1.8MHz 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 (lQ<luA)

　　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

　　Distributed Power Systems