MP8846
High-Efficiency, 6A, 8V, Synchronous
Step-Down Converter with I2C Interface
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP8846 is a high-frequency, synchronous,
rectified, step-down, switch-mode converter
with an I2C control interface. It offers a very
compact solution to achieve a 6A continuous
output current with excellent load and line
regulation over a wide input-supply range. The
MP8846 has synchronous-mode operation for
higher efficiency over the output-load range.
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Wide 4.5V to 8V Operation Input Range
45mΩ/18mΩ Low RDS(ON) Internal Power
MOSFETs
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1% VOUT Accuracy
I2C Programmable Reference Range from
0.6V to 1.87V in 10mV Steps with Slew-
Rate Control
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I2C Selectable Switching Frequency. Default
600kHz Switching Frequency.
Programmable Output Voltage
Power-Saving Mode, OTP, and OCP via I2C
Power Good Indication
The reference voltage level can be controlled
on-the-fly through a 3.4Mbps I2C serial interface.
The voltage range can be adjusted from 0.6V to
1.87V in 10mV steps. The voltage slew rate,
switching frequency, enable, and power-saving
mode are selectable through the I2C interface.
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1-Bit I2C Address Set Pin
OCP in Hiccup Mode
External Soft-Start
Available in a QFN3mmx3mm Package
Current-mode operation provides fast transient
response and eases loop stabilization. Full
protection
features
include
over-current
APPLICATIONS
protection (OCP), over-voltage protection
(OVP), and thermal shut down (TSD).
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SoC and Media Processors
General Consumers
Distributed Power Systems
The MP8846 requires a minimal number of
readily
components and is available in a 15-pin QFN15
(3mmx3mm) package.
available,
standard,
external
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
R8
10Ω
C4
0.1uF L1
1uH
4.5V-8V
100
VIN
EN
PG
1.2V/6A
95
90
85
80
VOUT
C2
22uFx2
C5
47uF
R1
34kΩ
R9
100kΩ
R3
33kΩ
R2
34kΩ
75
70
65
C1
0.22μF
SDA
SCL
R4
100kΩ
60
55
50
C7
22nF
0.01
0.10
1.00
10.00
MP8846 Rev. 1.0
5/19/2015
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
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