AIC2857概述：2A，23V，340KHZ同步整流降压DC-DC，SOP-8封装
The AIC2857 is a synchronous step-down regulator with an integrated Power MOSFET. AIC2857 achieves 2A continuous output current over a wide input supply range with excellent load and line regulation.Current mode operation provides fast transient response and eases loop stabilization.
Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. AIC2857 Adjustable soft-start reduces the stress on the input source and the output overshoot at turn-on. In shutdown mode, the AIC2857 draws 1μA or less of supply current.
The AIC2857 is available in SOP8 and SOP-8 with Exposed Pad Package.

AIC2857技术特性
•   2A Continuous Output Current
•   Programmable Soft Start
•   130mΩ Internal Power MOSFET Switches
•   Stable with Low ESR Output Ceramic Capacitors
•   Up to 93% Efficiency
•   <1μA Supply Current in Shutdown Mode
•   Fixed 340KHz Frequency
•   Thermal Shutdown
•   Cycle by Cycle Over Current Protection
•   Wide 4.75 to 23V Operating Input Range
•   Output Adjustable from 0.925V to 12V
•   Under Voltage Lockout

 
AIC2857应用领域:广泛应用于LCDTV、GPS、STB(机顶盒)、DPF(数码相框)、手机/PDA、EPC(上网笔记本)、Router(路由器)等产品
•   Networking Systems such as Modems & Routers
•   Distributed Power Systems
•   Pre-Regulator for Linear Regulators.
•   Set-top Box