MP1601

1A, Synchronous, Step-Down Converter

with 11µA Quiescent Current

in SOT563

MP1601 Rev. 1.0

www.MonolithicPower.com

1

3/24/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP1601 is a monolithic, step-down, switch-

mode converter with built-in, internal power

MOSFETs. It can achieve 1A of continuous

output current from a 2.3V-to-5.5V input voltage

range with excellent load and line regulation.

The output voltage can be regulated as low as

0.6V.

The constant-on-time control scheme provides

a fast transient response and eases loop

stabilization. Fault protections include cycle-by-

cycle current limiting and thermal shutdown.

The MP1601 is available in an ultra-small

SOT563 package and requires a minimal

number of readily available, standard, external

components.

The MP1601 is ideal for a wide range of

applications including high-performance DSPs,

wireless power, portable and mobile devices,

and other low-power systems.

FEATURES

 Low Quiescent Current: 11μA

 2.2MHz Switching Frequency

 EN for Power Sequencing

 Power Good Only for Fixed Output Version

 Wide 2.3V-to-5.5V Operating Input Range

 Output Adjustable from 0.6V

 Up to 1A of Output Current

 160mΩ and 120mΩ Internal Power

MOSFET Switches

 Output Discharging

 Short-Circuit Protection (SCP) with Hiccup

Mode

 Stable with Low ESR Output Ceramic

Capacitors

 100% Duty Cycle

 Available in a SOT563 Package

APPLICATIONS

 Wireless/Networking Cards

 Portable and Mobile Devices

 Battery-Powered Devices

 Low-Voltage I/O System Power

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

MP1601

GND

FB

VIN

C1

10μF

EN

VIN

5V

VOUT

1.2V/1A

SW

C2

10μF

R1

200kΩ

R2

200kΩ

EN

OUT

L1

1μH