MP26121
28V, 1A Li + Linear Battery Charger
with 10% Battery-Full Threshold
and Flexible NTC Interface
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP26121 is a linear, high-performance
single cell Li-Ion/Li-Polymer battery charger. By
integrating high voltage input protection into the
charger IC, the MP26121 can tolerate an input
surge up to +28V.
•
•
•
•
•
•
•
•
•
•
•
•
Interfaces to Many NTC Resistor Values
Proprietary VIN Surge Protection up to 28V
Programmable Charge Current up to 1A
1% Voltage Accuracy
10% Battery-Full Threshold
No Reverse Blocking Diode Required
Intelligent Thermal Management
Trickle Charge
7V Input OVP
Auto Recharge
Charge-Timer
Fault and Charge Status Indicators
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge currents (200mA to 1A),
current blocking, and trickle charge. The device
also provides fault and charge status
indications to the system.
For guaranteed safe operation, the MP26121
reduces charge current when the device
reaches high temperature (due to limited PCB
space). Other safety features include battery
temperature monitoring and programmable
timer to complete the charging cycle.
APPLICATIONS
•
•
•
•
•
Cell Phones
Digital Cameras
Smart Phones
PDAs
The MP26121 is available in 10-pin 3mm x
3mm QFN packages.
MP3 Players
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP26121 Rev. 0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
1