AIC2823

AIC2823 3A 23V Synchronous PWM Step-Down Converter  FEATURES  3A Continuous Output Current  Wide 4.75V to 23V Operating Input Range  Ouput Adjustable from 0.925V to 12V (VREF=0.925V Version)  Ouput Adjustable from 0.8V to 12V (VREF=0.8V Version)  Up to 95% Efficiency  Low Rds(on) Internal Switches: 100mΩ and 85mΩ  <3µA Supply Current in Shutdown Mode  340KHz/550KHz Frequency  Programmable Soft Start  Thermal Shutdown  Cycle by Cycle Over Current Protection  Under Voltage Lockout  Short Circuit Protection  Over Voltage Protection  DESCRIPTION The AIC2823 is a monolithic synchronous stepdown converter. The device can provide 3A output current from a 4.75V to 23V input supply. The AIC2823’s current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and capacitors. Current mode control also provides cycle-bycycle current limit. The AIC2823 provides over voltage protection and thermal shutdown. An adjustable soft-start prevents inrush current during turn on. This device is available in a SOP-8 package, provides a very compact system solution with minimal external components and PCB area.  APPLICATIONS  Networking Systems  Distributed Power Systems  Pre-Regulator for Linear Regulators  Set-top Box  TYPICAL APPLICATIONS CIRCUIT Analog Integrations Corporation AIC2823 Typical Application Circuit Si-Soft Research Center 3A1, 1 Li-Hsin 1st Rd., Science Park, Hsinchu 300, Taiwan, R.O.C. TEL: 8...