MP8845C
5A High Efficient Synchronous
Step-Down Switchers with I2C Interface
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP8845C is a highly integrated and high
frequency synchronous step-down switcher with
I2C control interface. It is optimized to support up
to 5A load current over an input supply range
from 2.7V to 6V with excellent load and line
regulation.
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•
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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
I2C Compatible Interface up to 3.4Mbps
I2C Programmable Output Range from 0.6V
to 1.45V in 6.69mV Steps
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•
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Constant frequency hysteretic control mode
provides extremely fast transient response
without loop compensation and easily achieves
high efficiency under light load condition.
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Factory Adjustable Switching Frequency from
1MHz to 2.2MHz
I2C Programmable Voltage Transition Slew
Rate
The output voltage level can be controlled, on-the
fly through a 3.4Mbps I2C serial interface.
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
also selectable through the I2C interface.
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Power Saving Mode Selectable via I2C
Internal Soft-Start
Current Overload and Thermal Shutdown
Protection
Available in 20-ball WLCSP-1.6mmx2mm
package
•
Fully protection features includes internal soft
start, over current protection and over
temperature protection.
APPLICATIONS
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•
Processor Core Supply
Micro Converter
The MP8845C requires a minimum number of
readily available standard external components
and is available in the compact WLCSP20-
1.6mmx2mm package.
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
L1
0.47uH
2.7V ~ 6V
1.1V
90
V
IN
SW
VIN
VO
80
VOUT
C2
47uF
70
60
50
40
30
20
10
0
C1
10uF
MP8845 C
EN
EN
SDA
SCL
I2C Bus
Up to 3.4Mbps
GND
AGND
0.01
0.1
1
10
MP8845C Rev. 1.02
4/25/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
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