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AP2953A

Chipown

18V Synchronous Rectified Step-Down Converter

AP2953A Description The AP2953A is a monolithic synchronous buck regulator. The device integrates 100mΩ MOSFETS that pro...


Chipown

AP2953A

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Description
AP2953A 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 Chipown 3A, 18V Synchronous Rectified Step-Down Converter 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 2 3 4 8 7 6 5 Typical Application Circuit Figure 1. Typical Application Circuit Efficy(%) 100 90 80 70 60 50 40 30 20 10 0 0 Vout=5V Vin=12V Vin=18V Vin=9V 500 1000 1500 2000 2500 3000 3500 Load(mA) Figure 2. Typical Efficiency Curve 8/F, ChuangYuan Building No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 http://www.chipown...




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