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MA5604

Major Power Technology Co., Ltd.

Rev.1.3

Apr.12, 2017

38V 5A Synchronous Buck Converter



GENERAL DESCRIPTION

The MA5604 is a monolithic synchronous buck regulator. The device integrates internal high

side and external low side power MOSFETs, and provides 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 80m

Ω high side Power MOSFET Switches

- Output Adjustable from VFB(1V) to 20V

- Up to 95% Efficiency

- Internal Soft-Start

- Stable with Low ESR Polymer Al-E-Capacitors

- Fixed 160KHz Frequency

- Cycle-by-Cycle Over Current Protection

- Input Under/Over Voltage Lockout



APPLICATION CIRCUIT

IN

EN

VDD

LG

BS

SW

FB

COMP

INPUT

C7

10

R4

100kΩ

C5

100nF

L1

33

μH

R1

40kΩ

R2

10kΩ

C8

22

μF

10V

OUTPUT

5V 5A

C3

R3

C4

0.1

μF

C6

0.1 F

MA5604

R5

0Ω

3.3nF

15kΩ

PAD(GND)

C2

470

μF

10V

Q1

NMOS

C1

CFB

3.3nF

Ω