MP2172

5.5V, 2A, 2.6MHz,

Synchronous, Step-Down Switcher

MP2172 Rev. 1.0

www.MonolithicPower.com

1

4/24/2019

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© 2019 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2172 is a monolithic, step-down, switch-

mode converter with integrated, internal, power

MOSFETs. The MP2172 can achieve up to 2A

of continuous output current from a 2.5V to

5.5V input voltage with excellent load and line

regulation. The output voltage can be regulated

as low as 0.6V.

Constant-on-time (COT) control provides fast

transient response and eases loop stabilization.

Full protection features include cycle-by-cycle

current limiting and thermal shutdown.

The MP2172 is ideal for a wide range of

applications, including automotive infotainment,

clusters, telematics, and portable instruments.

The MP2172 requires only a minimal number of

readily

available,

standard,

external

components and is available in a small

TSOT23-8 package.

FEATURES

 Wide 2.5V to 5.5V Operating Input Range

 Output Voltage as Low as 0.6V

 100% Duty Cycle in Dropout

 Up to 2A Output Current

 80mΩ and 45mΩ Internal Power MOSFET

Switches

 Default 2.6MHz Switching Frequency with

3.3V Input and 1.8V Output

 EN and Power Good for Power Sequencing

 Cycle-by-Cycle Over-Current Protection

(OCP)

 Auto Discharge at Power-Off

 Short-Circuit Protection (SCP) with Hiccup

Mode

 Stable with Low ESR Output Ceramic

Capacitors

 Available in a TSOT23-8 Package

APPLICATIONS

 Automotive Infotainment

 Automotive Clusters

 Automotive Telematics

 Low-Voltage I/O System Power

 Handheld/Battery-Powered Systems

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality Assurance.

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

Efficiency

VIN = 3.3V

0

10

20

30

40

50

60

70

80

90

100

0.01

0.1

1

10

OUTPUT CURRENT (A)

Vo=1.2V

Vo=1.8V