MP2611
2A, 1-Cell Li-Ion Battery Switching Charger
For USB and Adapter Power
The Future of Analog IC Technology
DESCRIPTION
FEATURES
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4.5V-to-6V Operating Input Voltage
Up to 100% Duty Operation.
The MP2611 is a monolithic switching charger
with built-in power MOSFETs for a single-cell
Li-Ion battery pack. It achieves up to a 2A-
charge current that can be programmed
through an accurate sense resistor over the
whole input range. It can operate from separate
inputs for USB or AC adapter: For USB input,
the input current limit can be programmed to
500mA and 900mA through the USBM pin to
cover both USB2.0 and USB3.0 standards.
Up to 2A Programmable Charge Current
±0.5% Battery Voltage Accuracy
Separate Inputs for USB and AC Adapter
Fully-Integrated Power Switches
Programmable Input Current Limit for the
USB Port
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No External Reverse Blocking Diode
Required
The MP2611 regulates the charge current and
battery voltage using two control loops to
realize highly accurate constant-current charge
and constant-voltage charge. A 100% duty
cycle can be achieved when battery voltage is
close to the input voltage due to the high-side
P-Channel MOSFET.
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Charging Operation Indicators
Programmable Safety Timer
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Battery Temperature Monitor and Protection
APPLICATIONS
Battery charge temperature and charging status
are always monitored for each condition. Two
status-monitor output pins indicate the battery
charging status and input status. The MP2611
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Smartphones
Portable Hand-Held Solutions
Portable Media Players
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.
also
features
internal
reverse-blocking
protection.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
The MP2611 is available in a 3mm x 4mm
QFN14 package.
TYPICAL APPLICATION
AC Adapter
Input
C1
22uF
1
2.2uH
L
ACIN
RS1
50m
3
9
4
USB Port
USBIN
SW
CSP
C2
22uF
MP2611
R1 1.5k
8
2
C4
22uF battery
11
BATT
1-cell
STAT1
1.5k
R2
PGND
12
6
STAT2
10
7
ON
OFF
VREF33
NTC
EN
USBM
R3
C3
1uF
13
14
TMR
CTMR
0.1uF
RILIM
AGND
5
RNTC
MP2611 Rev. 1.12
12/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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