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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: 100mohm and 85mohm
  • <3uA 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
APPLICATIONS
  • Networking Systems
  • Distributed Power Systems
  • Pre-Regulator for Linear Regulators
  • Set-top Box
DESCRIPTION
The AIC2823 is a monolithic synchronous step-down converter. The device can provide 3A output current from a 4.75V to 23V input supply.
The AIC2823’s current mode architecture and ex-ternal compensation allow the transient response to be optimized over a wide range of loads and capaci-tors. Current mode control also provides cycle-by-cycle 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, pro-vides a very compact system solution with minimal external components and PCB area.
TYPICAL APPLICATION


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