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EC3278NNMHR Datasheet(PDF) 1 Page - E-CMOS Corporation |
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EC3278NNMHR Datasheet(HTML) 1 Page - E-CMOS Corporation |
1 / 11 page E-CMOS Corp. (www.ecmos.com.tw) Page 1 of 11 3I13N-Rev.P001 2.4A/32V Synchronous Rectified Step-Down Converter EC3278 General Description The EC3278 is a monolithic synchronous buck regulator. The device integrates two 90m Ω MOSFETs, and provides 2.4A of continuous load current over a wide input voltage of 4.75V to 32V. Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 1µA. This device, available in an SOP-8(Exposed PAD) package, provides a very compact solution with minimal external components. Features • 2.4A Output Current • Wide 4.75V to 32V Operating Input Range • Integrated 90m Ω Power MOSFET Switches • Output Adjustable from 0.923V to 30V • Up to 93% Efficiency • Programmable Soft-Start • Stable with Low ESR Ceramic Output Capacitors • Fixed 200KHz Frequency • Cycle-by-Cycle Over Current Protection • Input Under Voltage Lockout Applications • Distributed Power Systems • Networking Systems • FPGA, DSP, ASIC Power Supplies • Green Electronics/ Appliances • Notebook Computers Typical Application Circuit Fig1. EC3278 with 5V Output, 470µF/16V Electrolytic Output Capacitor |
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