MP8619

8A, 25V, 600kHz

Synchronous Step-down Converter

MP8619 Rev. 0.9

www.MonolithicPower.com

1

12/10/2013

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2013 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP8619 is a high frequency synchronous

rectified step-down switch mode converter with

built in internal power MOSFETs. It offers a

very compact solution to achieve 8A continuous

output current over a wide input supply range

with excellent load and line regulation.

Current mode operation provides fast transient

response and eases loop stabilization.

Full protection features include OCP and thermal

shut down.

The MP8619 requires a minimum number of

readily available standard external components

and is available in a space saving 5mm x 6mm

30-pin QFN package.

FEATURES

• Wide 4.5V to 25V Operating Input Range

• 8A Output Current

• Proprietary

Switching

Loss

Reduction

Technique

• Fixed 600kHz Switching Frequency

• Sync from 300kHz to 2MHz External Clock

• Internal Compensation

• OCP Protection and Thermal Shutdown

• Output Adjustable from 0.8V to 15V

• Available in 30-pin 5x6mm QFN30 Package

APPLICATIONS

•

Networking Systems

•

Digital Set Top Boxes

•

Distributed Power Systems

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

BST

IN

VCC

SW

EN/SYNC

GND

MP8619

27-29

23

16-19

26

5-8

9-15,20,21,30

22

25

VIN

VOUT

L1

1.5uH

FB

BG

PG

C3

1uF

C1

22uF

C2

100uF

C4

1uF

R3

100k

R1

31.6k

ON OFF

24

R2

10k

OUTPUT CURRENT(A)

Efficiency

50

55

60

65

70

75

80

85

90

95

100

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