MP1499

High Efficiency 5A Peak, 16V, 500kHz

Synchronous Step Down Converter

MP1499 Rev. 1.0

www.MonolithicPower.com

1

7/26/2012

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP1499 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 5A peak

output current over a wide input supply range

with excellent load and line regulation. The

MP1499 has synchronous mode operation for

higher efficiency over output current load range.

Current mode operation provides fast transient

response and eases loop stabilization.

Full protection features include over current

protection and thermal shut down.

The MP1499 requires a minimum number of

readily available standard external components

and is available in a space saving 10-pin QFN

(2x3mm) package.

FEATURES

 Wide 4.5V to 16V Operating Input Range

MOSFETs

 Proprietary Switching Loss Reduction

Technique

 Fixed 500kHz Switching Frequency

 Sync from 200kHz to 2MHz External Clock

 AAM Power Save Mode

 External Soft Start

 OCP Protection and Hiccup

 Thermal Shutdown

 Output Adjustable from 0.8V

 Available in a QFN10 (2x3mm) Package

APPLICATIONS

 Digital Set Top Boxes

 Flat Panel Television and Monitors

 Distributed Power Systems

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

BST

IN

SW

EN/SYNC

FB

GND

NC

MP1499

94

8

1

6, 7

5

3

10

3.3V/5A

C2

47

R1

40.2k

R8

33k

R2

R5

10

13k

L1

3.3

C4

100nF

C1

22

R3

100k

SS

C5

22nF

C6

VCC

2

OUTPUT CURRENT(A)

Efficiency vs.

Output Current

50

55

60

65

70

75

80

85

90

95

100

0.01

0.10

1.00

10.00