MP28164

High-Efficiency, Single-Inductor,

Buck-Boost Converter with 4.2A Switches

MP28164 Rev. 1.0

www.MonolithicPower.com

1

3/28/2016

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

© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP28164 is a high-efficiency, low-

quiescent current, buck-boost converter that

operates from an input voltage above, equal to,

or below the output voltage. The device

provides a compact solution for products

powered by one-cell Lithium-Ion or multi-cell

alkaline batteries where the output voltage is

within the battery voltage range.

The MP28164 uses current-mode control with

fixed PWM frequency for optimal stability and

transient response. The fixed 2MHz switching

minimize the solution footprint while maintaining

high efficiency.

To ensure the longest possible battery life, the

MP28164 uses an optional pulse skipping mode

that reduces the switching frequency under

light-load conditions. For other low-noise

applications where pulse skipping mode may

cause interference, a high-logic input on

MODE/SYNC guarantees fixed-frequency PWM

operation under all load conditions.

The MP28164 operates with an input voltage

from 1.2V to 5.5V to provide an adjustable

output voltage from 1.5V to 5V. With an input

from 2.5V to 5.5V, the device can supply 2A of

current to the load with a 3.3V output voltage.

The MP28164 is available in a small QFN-11

(2mmx3mm) package.

FEATURES

 1.8V Minimum Start-Up Input Voltage

 1.2V to 5.5V Input Work Range

 1.5V to 5V Output Range

 4.2A Switching Current Limit

 3.3V/2A Load Capability from a 2.5V-to-

5.5V Input Supply

 2MHz Fixed or External Synchronous

Switching Frequency

 Selectable PSM/PWM Mode

 Typical 25μA Quiescent Current

 High Efficiency up to 95%

 Load Disconnect during Shutdown

 Internal Soft Start and Compensation

 Power Good Indicator

 Hiccup Mode for Short-Circuit Protection

(SCP)

 Over-Temperature Protection (OTP)

 Available in a Small QFN-11 (2mmx3mm)

Package

APPLICATIONS

 Battery-Powered Devices

 Portable Instruments

 Tablet PC

 Super-Cap Charger

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

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