降压IC:MP2303

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D*CRIPTION
The MP2303 is a monolithic synchronous buck
regulator. The device integrates 120mΩ
MOSFETS that provide 3A continuous load
current over a wide operating input voltage of
4.75V to 28V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
An adjustable soft-start prevents inrush current
at turn-on. In shutdown mode, the supply
current drops to 1μA.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.

FEATUR*
• 3A Output Current
• Wide 4.75V to 28V Operating Input Range
• Integrated 120mΩ Power MOSFET Switches
• Output Adjustable from 0.8V to 25V
• Up to 95% Efficiency
• Programmable Soft-Start
• Stable with Low *R Ceramic Output Capacitors
• Fixed 340KHz Frequency
• Cycle-by-Cycle Over Current Protection
• Input Under Voltage Lockout
• Thermally Enhanced 8-Pin SOIC Package
APPLICATIONS
• Distributed Power Systems
• Pre-Regulator for Linear Regulators
• Notebook Computers