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MA5602

Major Power Technology Co., Ltd.

Rev.1.5

Apr. 11, 2017

38V Synchronous Buck Converter With CC/CV



GENERAL DESCRIPTION

MA5602 is a wide input voltage, high efficiency Active CC step-down DC/DC converter that

operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.

MA5602 provides up to 2.5A output current at 160kHz switching frequency. 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 an

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 5.5V

- Up to 92% 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

C1

2.2

40kΩ

10kΩ

VOUT

5V 2.4A

C6

0.1 F

IN

COMP

GND

SEN1

SW

SEN2

FB

RSEN

37mΩ

L1

C2

R1

R2

BS

C5

MA5602

R5

24Ω

C3

R3

3.3nF

15kΩ

10

PAD

D1

C7

C8

CFB

3.3n

Ω

Ω))