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MP9403

3A, 7V, 250kHz Integrated Synchronous Step-Down Converter

ALTERNATIVE PART

NRFND Datasheet

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MP9403

MP9403

NOT RECOMMENDED FOR NEW DESIGNS

3A, 7V, 250kHz Integrated Synchronous Step-Down Converter

ALTERNATIVE PART

NRFND Datasheet

Description

The MP9403 is a monolithic synchronous buck regulator. The device integrates a 150mΩ high side MOSFET and a 100mΩ low side MOSFET that provides 3A continuous load current over input voltage of 4.3V to 7V. 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 with exposed pad, provides a very compact system solution with minimal reliance on external components.

Features & Benefits

3A Output Current
4.3V to 7V Operating Input Range
Integrated MOSFET Switches
Output Adjustable from 0.80V to 5.50V
Up to 93% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 250kHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Thermally Enhanced 8-Pin SOIC Package

Active Part Numbers:

MP9403EN-LF-P MP9403EN-LF-Z

Meaning of P & Z

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All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.

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