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MA5601

Major Power Technology Co., Ltd.

Rev.1.3

Apr. 12, 2017

38V Synchronous Buck Converter



GENERAL DESCRIPTION

The MA5601 is a monolithic synchronous buck regulator. The device integrates two internal

power MOSFETs, and provides 2.5A of continuous load current over a wide input voltage of 8V

to 38V. Current mode control provides fast transient response and cycle-by-cycle current limit.

An internal soft-start prevents inrush current at turn-on, This device, available in

SOP8L-EP(Exposed pad) package, provides a very compact solution with minimal external

components.



FEATURES

- Wide 8V to 38V Operating Input Range

- Integrated 140m

Ω Power MOSFET Switches

- Output Adjustable from VFB(1.00V±2%) to 20V

- Up to 93% Efficiency

- Internal Soft-Start and Fixed 160KHz Frequency

- Stable with Low ESR Polymer Al-E-Capacitors

- Cycle-by-Cycle Over Current Protection

- Input Under/Over Voltage Lockout



APPLICATION CIRCUIT

IN

EN

VDD

GND

BS

SW

FB

COMP

INPUT 8V~38V

C1

R4

100kΩ

C5

100nF

L1

R1

40kΩ

R2

10kΩ

C2

OUTPUT

5V 2.4A

C3

R3

C4

0.1 F

C6

0.1 F

MA5601

R5

24Ω

3.3nF

15kΩ

PAD

D1

SS34

C7

C8

CFB

3.3nF

Ω