MP2611GL-Z Datasheet, PDF (1/22 Pages) MPS Industries, Inc. – 2A, 1-Cell Li-Ion Battery Switching Charger For USB and Adapter Power

MP2611
2A, 1-Cell Li-Ion Battery Switching Charger
For USB and Adapter Power
The Future of Analog IC Technology
DESCRIPTION
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.
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.
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
also features internal reverse-blocking
protection.
The MP2611 is available in a 3mm x 4mm
QFN14 package.
FEATURES
• 4.5V-to-6V Operating Input Voltage
• Up to 100% Duty Operation.
• 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
• No External Reverse Blocking Diode
Required
• Charging Operation Indicators
• Programmable Safety Timer
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Battery Temperature Monitor and Protection
APPLICATIONS
• 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.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
AC Adapter
Input
USB Port
C1
22uF
C2
22uF
R1 1.5k
R2 1.5k
R3
C3
1uF
RNTC
4 _USBIN
1
ACIN
L 2.2uH
SW ³
9
MP2611 ^CSP
11 _STAT1
BATT ⁸
12 _STAT2
2
PGND
RS1
50m
6 _VREF33
10
EN
USBM ⁷
ON OFF
13 _NTC
AGND
5
TMR ¹⁴
CTMR
0.1uF
RILIM
C4 _1-cell
22uF battery
MP2611 Rev. 1.12
www.MonolithicPower.com
1
12/7/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.