MP3422
The Future of Analog IC Technology
6.5A, 600kHz High Efficiency, Synchronous
Step-Up Converter with Output Disconnect
in 2x2mm QFN Package
DESCRIPTION
FEATURES
The MP3422 is a high-efficiency, synchronous,
current–mode, step-up converter with output
disconnect.
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The MP3422 starts up from an input voltage as
low as 1.9V, while providing inrush current
limiting and output short-circuit protection. The
integrated P-channel synchronous rectifier
improves efficiency and eliminates the need for
an external Schottky diode. This P-channel
disconnects the output from the input during
shutdown.
The 600kHz switching frequency allows small
external components, while the internal
compensation and soft-start minimize external
component count. The MP3422 provides a
compact solution for a 5V output, 2.5A load
requirement, using a supply voltage down to
2.8V.
The MP3422 is available in 14-pin QFN
2mmx2mm package.
Up to 98% Efficiency
1.9V to 5.5V Input Range
2.5V to 5.5V Output Range
Internal Synchronous Rectifier
600kHz Fixed Switching Frequency
>6.5A Switch Current Limit Capability
43uA Quiescent Current
High Efficiency over Full Load Range
Internal Soft-start and Compensation
True Output Load Disconnect from Input
OCP, SCP, OVP and OTP Protection
Small 2x2mm QFN14 Package
APPLICATIONS
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Battery-Powered Products
Power Banks, Juice Packs, Battery Back-up
Units
USB Power Supply
Consumer Electronic Accessories
Tablets
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.
TYPICAL APPLICATION
Efficiency vs.
Load Current
100
VOUT=5V
VIN=4.2V
98
96
94
VIN=3.3V VIN=2.8V
92
90
88
86
84
0
0.5
1
1.5
2
2.5
LOAD CURRENT (A)
MP3422 Rev.1.01
8/6/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
1
MP3422—6.5A, 600KHZ HIGH EFFICIENCY, SYNCHRONOUS, STEP-UP CONVERTER WITH OUTPUT DISCONNECT IN 2X2MM QFN PACKAGE
ORDERING INFORMATION
Part Number*
MP3422GG
Package
QFN-14 (2mmX2mm)
Top Marking
See Below
* For Tape & Reel, add suffix –Z (e.g. MP3422GG–Z)
TOP MARKING
CN: product code of MP3422GG;
Y: year code;
LLL: lot number;
PACKAGE REFERENCE
TOP VIEW
MP3422 Rev.1.01
8/6/2014
PGND
1
PGND
2
SW
3
OUT
4
FB
AGND
12
11
10
INA
13 PGND
9
IN
14 SW
8
EN
7
NC
5
6
OUT
OUT
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
2
MP3422—6.5A, 600KHZ HIGH EFFICIENCY, SYNCHRONOUS, STEP-UP CONVERTER WITH OUTPUT DISCONNECT IN 2X2MM QFN PACKAGE
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
SW Pin ................. -0.3V to +6.5V (9V for VOUT
60
60
VIN
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