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AIC2858F

3A 23V Synchronous Step-Down Converter

FEATURES
  • 3A Continuous Output Current
  • Programmable Soft Start
  • 100mohm Internal Power MOSFET Switches
  • Stable with Low ESR Output Ceramic Capacitors
  • Up to 95% Efficiency
  • <1uA 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
APPLICATIONS
  • Networking Systems such as Modems & Routers
  • Distributed Power Systems
  • Pre-Regulator for Linear Regulators
  • Set-top Box
DESCRIPTION
The AIC2858F is a synchronous step-down regulator with an integrated Power MOSFET. It achieves 3A 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-bycycle current limiting and thermal shutdown. Adjustable soft-start reduces the stress on the input source and the output overshoot at turnon. In shutdown mode, the regulator draws 1uA or less of supply current.
The AIC2858F is available in SOP-8E Package.
TYPICAL APPLICATION


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