FAN8303

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2A 23V Non-Synchronous Step-Down DC/DC Regulator

General Description

The FAN8303 is a monolithic, non-synchronous, stepdown (buck) regulator with internal power MOSFETs. It 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. The regulator draws less than 40µA shutdown current. FAN8303 requires a minimum number of readily available standard external components. External compensation, enable, and programmable soft-start features allow design optimization and flexibility. Cycle-by-cycle current limit, frequency foldback, and thermal shutdown provide protection against shorted outputs.

Product Status/Pricing/Packing

Product Product Status Eco Status *Pricing Package Type Leads Packing Method Package Drawing **Package Marking Convention RoHS IPC1752 RoHS/REACH/JIG Certificate of Compliance
FAN8303MX Full Production Green as of Apr 2009 $0.65 SO-8 8 TAPE REEL PDF Line 1:$Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code) &K
Line 2:8303M
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Features

  • 2A Output Current
  • 0.22Ω Internal Power MOSFET Switch
  • Wide 5V to 23V Operating Input Range
  • Output Adjustable from 0.6 to 20V
  • Stable with Low ESR Output Ceramic Capacitors
  • Up to 90% Efficiency
  • Less than 40µA Shutdown Current
  • Fixed 370kHz Frequency
  • Thermal Shutdown with Hysteresis
  • Cycle-by-Cycle Over-Current Protection
  • Available in 8-Pin SOIC Package

Applications

  • TBA

Application Notes

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