EV2145-D-00A

Constant On-Time Synchronous,

Step-Down Switcher Evaluation Board

EV2145-D-00A Rev.1.0

www.MonolithicPower.com

1

8/14/2014

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© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2145 is a monolithic, step-down, switch-

mode converter with internal power MOSFETs.

It can achieve up to 6A continuous output

current from a 2.8V-to-5.5V input voltage with

excellent load and line regulation. The output

voltage can be regulated to as low as 0.6V.

Constant-on-time

control

provides

a

fast

transient response and eases loop stabilization.

Fault condition protections include cycle-by-

cycle current limiting and thermal shutdown.

The MP2145 is available in a small QFN2×3mm

package and requires only a minimal number of

readily-available,

standard,

external

components.

The MP2145 is ideal for a wide range of

applications, including storage (SSD, HDD),

high-performance

DSPs,

FPGAs,

and

distributed power systems.

ELECTRICAL SPECIFICATION

Parameter

Symbol

Value

Units

Input Voltage

(1)

2.8–5.5

V

Output Voltage

1.2

V

Output Current

6

A

Notes:

FEATURES

• Up to 6A Output Current

• Wide 2.8V-to-5.5V Operating Input Range

• 20mΩ and 12mΩ Internal Power MOSFETs

• 40µA Quiescent Current

• 1.2MHz Fixed Switching Frequency

• 1% Feedback Accuracy

• External Mode Control

• External VCON Control

• Adjustable Output from 0.6V

• 1.5ms Internal SS Time with Pre-Bias

Startup

• Cycle-by-Cycle Over Current Protection

• Short Circuit Protection with Hiccup Mode

• Stable with Low-ESR Output Ceramic

Capacitors

• Thermal Shutdown

• Available in a 2mm×3mm QFN Package

• Output Discharge Function

APPLICATIONS

• Storage (SSD, HDD)

• Portable Instruments

• Battery-Powered Devices

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.

EV2145-D-00A EVALUATION BOARD

Board Number

MPS IC Number

EV2145-D-00A

MP2145GD