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AP2953AS8PR Datasheet(PDF) 1 Page - Wuxi Chipown Micro-electronics limited |
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AP2953AS8PR Datasheet(HTML) 1 Page - Wuxi Chipown Micro-electronics limited |
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1 / 9 page  AP2953A Chipown 8/F, ChuangYuan Building No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 http://www.chipown.com.cn V2.0 1 / 9 3A, 18V Synchronous Rectified Step-Down Converter Description The AP2953A is a monolithic synchronous buck regulator. The device integrates 100mΩ MOSFETS that provide 3A continuous load current over a wide operating input voltage of 4.75V to 18V. Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn-on. In shutdown mode, the supply current drops below 1μA. This device, available in an 8-pin SOP package, provides a very compact system solution with minimal reliance on external components. Applications Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers Features 3A Output Current Wide 4.75V to 18V Operating Input Range Integrated 100mΩ Power MOSFET Switches Output Adjustable from 0.925V to 15V Up to 95% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Fixed 370KHz Frequency Cycle-by-Cycle Over Current Protection Input Under Voltage Lockout Thermally Enhanced 8-Pin SOP Package Package SOP8-PP 5 6 7 8 4 3 2 Typical Application Circuit Figure 1. Typical Application Circuit Vout=5V 0 10 20 30 40 50 60 70 80 90 100 0 500 1000 1500 2000 2500 3000 3500 Load(mA) Vin=12V Vin=18V Vin=9V Figure 2. Typical Efficiency Curve |
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