MP2351DK-LF-P

MP2351DK-LF-P Datasheet

The MP2351 is a monolithic step down switch mode converter with a built in internal power MOSFET. It achieves 1.5A continuous output current over a wide input supply range with excellent load and line regulation.

Part	Datasheet
MP2351DK-LF-P	MP2351DK-LF-P (pdf)

Related Parts	Information
MP2351DK-LF-Z	MP2351DK-LF-Z
MP2351DQ-LF-Z	MP2351DQ-LF-Z
MP2351DQ-LF-P	MP2351DQ-LF-P

PDF Datasheet Preview
The Future of Analog IC Technology The MP2351 is a monolithic step down switch mode converter with a built in internal power MOSFET. It achieves 1.5A 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. Fault condition protection includes cycle-by-cycle current limiting, short circuit frequency foldback and thermal shutdown. In shutdown mode the regulator draws 20uA of supply current. The MP2351 requires a minimum number of readily available standard external components. EVALUATION BOARD REFERENCE Board Number EV2351DQ-00A Dimensions 2.3”X 1.5”Y x 0.5”Z MP2351 1.5A, 23V, 1.4MHz Step-Down Converter • 1.5A Output Current • Internal Power MOSFET Switch • Stable with Low ESR Output Ceramic Capacitors • Up to 93% Efficiency • 20uA Shutdown Mode • Fixed 1.4MHz Frequency • Thermal Shutdown • Cycle-by-Cycle Over Current Protection • Wide 4.75V to 23V Operating Input Range • Output Adjustable from 1.23V to 16V • Programmable Under Voltage Lockout • Frequency Synchronization Input • Available in QFN 3mm x 3mm and tiny 10-Pin MSOP Packages • Evaluation Board Available • Distributed Power Systems • Battery Charger • DSL Modems • Pre-Regulator for Linear Regulators “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. INPUT 4.75V - 23V OPEN AUTOMATIC STARTUP OPEN NOT USED C5 10nF IN 9 EN BS SW 5 MP2351 10 SYNC COMP C3 1nF C6 OPEN D1 B220A VOUT 3.3V/1.5A MP2351_TAC_S01 EFFICIENCY % Efficiency vs Load Current 100 VOUT=5V VOUT=2.5V VOUT=3.3V 300 600 900 1200 1500 LOAD CURRENT mA MP2351-EC01 9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2007 MPS. All Rights Reserved. MP2351 1.5A, 23V, 1.4MHz STEP-DOWN CONVERTER PACKAGE REFERENCE

PDF Datasheet Preview

The Future of Analog IC Technology

The MP2351 is a monolithic step down switch mode converter with a built in internal power MOSFET. It achieves 1.5A 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.

Fault condition protection includes cycle-by-cycle current limiting, short circuit frequency foldback and thermal shutdown. In shutdown mode the regulator draws 20uA of supply current.

The MP2351 requires a minimum number of readily available standard external components.

EVALUATION BOARD REFERENCE

Board Number EV2351DQ-00A

Dimensions 2.3”X 1.5”Y x 0.5”Z

MP2351
1.5A, 23V, 1.4MHz Step-Down Converter
• 1.5A Output Current
• Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic

Capacitors
• Up to 93% Efficiency
• 20uA Shutdown Mode
• Fixed 1.4MHz Frequency
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Wide 4.75V to 23V Operating Input Range
• Output Adjustable from 1.23V to 16V
• Programmable Under Voltage Lockout
• Frequency Synchronization Input
• Available in QFN 3mm x 3mm and tiny
10-Pin MSOP Packages
• Evaluation Board Available
• Distributed Power Systems
• Battery Charger
• DSL Modems
• Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc.

INPUT 4.75V - 23V

OPEN AUTOMATIC

STARTUP

OPEN NOT USED

C5 10nF

IN 9 EN

BS SW 5

MP2351
10 SYNC

COMP

C3 1nF C6 OPEN

D1 B220A

VOUT 3.3V/1.5A

MP2351_TAC_S01

EFFICIENCY %

Efficiency vs Load Current
100 VOUT=5V

VOUT=2.5V

VOUT=3.3V
300 600 900 1200 1500 LOAD CURRENT mA

MP2351-EC01
9/21/2007

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2007 MPS. All Rights Reserved.

MP2351 1.5A, 23V, 1.4MHz STEP-DOWN CONVERTER

PACKAGE REFERENCE

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MP2351DK-LF-P Datasheet file may be downloaded here without warranties.

Datasheet ID: MP2351DK-LF-P 650019