MP8845C

5A High Efficient Synchronous

Step-Down Switchers with I

MP8845C Rev. 1.02

www.MonolithicPower.com

1

4/25/2014

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

© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP8845C is a highly integrated and high

frequency synchronous step-down switcher with

to 5A load current over an input supply range

from 2.7V to 6V with excellent load and line

regulation.

Constant frequency hysteretic control mode

provides extremely fast transient response

without loop compensation and easily achieves

high efficiency under light load condition.

The output voltage level can be controlled, on-the

Voltage range can be adjusted from 0.6V to

1.45V in 6.69mV steps.

Voltage slew rate,

switching frequency and power savings mode are

Fully protection features includes internal soft

start,

over

current

protection

and

over

temperature protection.

The MP8845C requires a minimum number of

readily available standard external components

and is available in the compact WLCSP20-

1.6mmx2mm package.

FEATURES

• 2.7V to 6V Input Voltage Range

• Up to 5A Load Current

• Internal 32mΩ High-Side, 17mΩ Low-Side

Power MOSFETs

• Fixed Frequency Hysteretic Mode Control

to 1.45V in 6.69mV Steps

• Factory Adjustable Switching Frequency from

1MHz to 2.2MHz

Rate

• Power Saving Mode Selectable via I2C

• Internal Soft-Start

• Current Overload and Thermal Shutdown

Protection

• Available in 20-ball WLCSP-1.6mmx2mm

package

APPLICATIONS

• Processor Core Supply

• Micro Converter

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.

The MP8845C is covered by US Patents

TYPICAL APPLICATION

MP8845 C

GND

SCL

VIN

C1

10uF

SDA

AGND

SW

C2

47uF

VOUT

2.7V ~ 6V

L1

0.47uH

1.1V

I2C Bus

Up to 3.4Mbps

EN

EN

0

10

20

30

40

50

60

70

80

90

0.01

0.1

1

10