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MA5003

Major Power Technology Co., Ltd.

Rev.1.3

Dec.01, 2016

2A 1.5MHz Synchronous Buck Converter



GENERAL DESCRIPTION

The MA5003 is a monolithic synchronous buck regulator with a built in internal power

MOSFET. It achieves 2A continuous output current fix switching frequency with excellent

load and line regulation.

Current mode operation provides fast transient response and eases of loop

stabilization.

Fault condition protection includes cycle-by-cycle current limiting, output short circuit

protection and thermal shutdown. In shutdown mode the regulator draws less than 1

μA of

supply current. Internal soft-start minimizes the inrush supply current at initial startup.

The MA5003 requires a minimum number of readily available standard external

components. It is available in SOT23-5L and SOP8-EP packages.



FEATURES

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2.5V to 5.5V input voltage range

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Up to 2A Output Current

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150/120m

Ω Internal Power MOSFET Switch

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Stable with Low ESR Output Ceramic Capacitors

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Up to 95% Efficiency

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Less than 1

μA Shutdown Current

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1.5Mhz Switching Frequency

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Thermal Shutdown Protection

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Current limit and short circuit protections.

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Output Adjustable from 1V to VIN

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Available in SOT23-5 and SOP8-EP Pb-Free Package

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Build-in soft start function

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Input UVLO and OVLO protections