MP8845

5A, Highly Efficient, Synchronous,

Step-Down Switcher with I

MP8845 Rev. 1.1

www.MonolithicPower.com

1

2/23/2017

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

© 2017 MPS. All Rights Reserved.

DESCRIPTION

The

MP8845

is

a

highly

integrated,

high-

frequency, synchronous, step-down switcher with

an I

up to 5A of load current over a 2.7V to 6V input

supply

range

with

excellent

load

and

line

regulation.

Fixed-frequency hysteretic control mode provides

an extremely fast transient response without loop

compensation to achieve high efficiency easily

under light-load conditions.

The output voltage level can be controlled on-

the-fly through a 3.4Mbps I

The voltage range can be adjusted from 0.6V to

1.1V in 3.9mV steps.

The voltage slew rate,

switching frequency, and power-saving modes

are also selectable through the I

Full protection features include internal soft start,

over-current

protection

(OCP),

and

over-

temperature protection (OTP).

The MP8845 requires a minimum number of

readily available, standard, external components

and is available in

a compact WLCSP-20

(1.6mmx2mm) package.

FEATURES

 2.7V to 6V Input Voltage Range

 Up to 5A Load Current

 Internal 28mΩ High-Side and 17mΩ Low-

Side Power MOSFETs

 Fixed-Frequency Hysteretic Mode Control

to 1.1V in 3.9mV Steps

 Factory Adjustable Switching Frequency from

1MHz to 2.2MHz

Rate

 Internal Soft Start

 Power Good Indicator

 Current Overload and Thermal Shutdown

Protection

 Available in 20-Ball WLCSP-20 (1.6mmx2mm)

Package

APPLICATIONS

 Processor Core Supply

 Micro Converter

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

MP8845

GND

SCL

VIN

SDA

VIN

AGND

SW

VOUT

2.7V ~ 6V

L1

0.47µH

0.6V ~1.1V

Up to 3.4Mbps

EN

EN

PG

R1

100k

{

22µF 0.1µF

C2B

C2A

µF

47

µF

47

C1A

C1B