MP2359 データシートの表示（PDF） - Monolithic Power Systems

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MP2359

1.2A, 24V, 1.4MHz Step-Down Converter in a TSOT23-6

Monolithic Power Systems 

TM

The Future of Analog IC Technology TM

MP2359

1.2A, 24V, 1.4MHz

Step-Down Converter in a TSOT23-6

DESCRIPTION

The MP2359 is a monolithic step-down switch

mode converter with a built-in power MOSFET.

It achieves 1.2A peak 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. Fault condition protection includes

cycle-by-cycle current limiting and thermal

shutdown.

The MP2359 requires a minimum number of

readily available standard external components.

The MP2359 is available in TSOT23-6 and

SOT23-6 packages.

EVALUATION BOARD REFERENCE

Board Number

EV2359DJ-00B

Dimensions

2.1”X x 1.9”Y x 0.4”Z

FEATURES

• 1.2A Peak Output Current

• 0.35Ω Internal Power MOSFET Switch

• Stable with Low ESR Output Ceramic

Capacitors

• Up to 92% Efficiency

• 0.1µA Shutdown Mode

• Fixed 1.4MHz Frequency

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Wide 4.5V to 24V Operating Input Range

• Output Adjustable from 0.81V to 15V

• Available in TSOT23-6 and SOT23-6

Packages

APPLICATIONS

• Distributed Power Systems

• Battery Charger

• Pre-Regulator for Linear Regulators

• WLED Drivers

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

Power Systems, Inc.

TYPICAL APPLICATION

VIN

12V

OFF ON

5

IN

1

BST

CB

10nF

6

SW

MP2359

D1

B230A

4

EN

GND

2

3

FB

VOUT

3.3V @ 1.2A

Efficiency vs

Load Currents

100

VIN = 12V

90

80

70

VIN = 24V

60

50

40

30

20

10

0

0.01

VOUT = 5V

0.1

1

10

LOAD CURRENT (A)

MP2359 Rev. 1.1

www.MonolithicPower.com

1

6/23/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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