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TM

MP2364

Dual 1.5A, 23V, 1.4MHz

Step-Down Converter

The Future of Analog IC Technology

TM

DESCRIPTION

The MP2364 is a dual monolithic step-down

switch mode converter with built-in internal

power MOSFETs. It achieves 1.5A continuous

output current for each output 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. In

shutdown mode, the regulator draws 40碌A(chǔ) of

supply current.

The MP2364 requires a minimum number of

readily available standard external components.

FEATURES

鈥?/div>

1.5A Current for Each Output

0.18鈩?Internal Power MOSFET Switches

Stable with Low ESR Output Ceramic

Capacitors

Up to 90% Efficiency

40碌A(chǔ) Shutdown Mode

Fixed 1.4MHz Frequency

Thermal Shutdown

Cycle-by-Cycle Over Current Protection

Wide 4.75V to 23V Operating Input Range

Each Output Adjustable from 0.92V to 16V

Configurable for Single Output with Double

the Current

Programmable Under Voltage Lockout

Programmable Soft-Start

Available in TSSOP20 with Exposed Pad

and SOIC Packages

Distributed Power Systems

I/O and Core supplies

DSL Modems

Set top boxes

Cable Modems

EVALUATION BOARD REFERENCE

Board Number

EV2364DF-01A

Dimensions

2.2鈥漍 x 1.6鈥漎 x 0.4鈥漐

APPLICATIONS

鈥?/div>

鈥淢PS鈥?and 鈥淭he Future of Analog IC Technology鈥?are Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

12V

Efficiency vs

Load Current

100

1

2

3

SSA

NC1

BSA

INA

SWA

PGA

SGA

FBB

COMPB

ENB

ENA

COMPA

FBA

SGB

20

19

18

17

16

15

14

13

10nF

12

11

3.3V @ 1.5A

OFF ON

82pF

2A

Schottky

2.2nF

90

V

OUT

=3.3V

V

OUT

=5V

10nF

2A

Schottky

4

5

6

7

8

9

EFFICIENCY (%)

MP2364

PGB

SWB

INB

NC2

BSB

SSB

2.5V @ 1.5A

80

70

60

50

V

OUT

=2.5V

OFF ON

10

3.3nF

0

MP2364_TAC_S01

0.5

1.0

LOAD CURRENT (A)

1.5

MP2364_EC01

MP2364 Rev. 1.4

3/22/2006

www.MonolithicPower.com

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

1

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