MP2618 Datasheet: 2-3 Cell Switching Li-Ion Battery Charger





MP2618 2-3 Cell Switching Li-Ion Battery Charger Datasheet

Part Number MP2618
Description 2-3 Cell Switching Li-Ion Battery Charger
Manufacture MPS
Total Page 19 Pages
PDF Download Download MP2618 Datasheet PDF

Features: The Future of Analog IC Technology MP26 18 2A, 24V Input, 600kHz 2-3 Cell Switc hing Li-Ion Battery Charger With System Power Path Management DESCRIPTION The MP2618 is a monolithic switching charg er for 2-3 cell Li-Ion battery packs wi th a built-in internal power MOSFET. It achieves up to 2A charge current with current mode control for fast loop resp onse and easy compensation. The charge current can be programmed by sensing th e current through an accurate sense res istor. MP2618 regulates the charge volt age and charge current using two contro l loops to realize high accuracy CC cha rge and CV charge. The system power pat h management function ensures continuou s supply to the system by automatically selecting the input or the battery. Po wer path management separates charging current from system load. When the MP26 18 realizes current sharing of the inpu t current, charge current will drop dow n according to the increase of the syst em current. Fault condition protection includes cycle-by-cycle .

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The Future of Analog IC Technology
MP2618
2A, 24V Input, 600kHz
2-3 Cell Switching Li-Ion Battery Charger
With System Power Path Management
DESCRIPTION
The MP2618 is a monolithic switching charger
for 2-3 cell Li-Ion battery packs with a built-in
internal power MOSFET. It achieves up to 2A
charge current with current mode control for
fast loop response and easy compensation.
The charge current can be programmed by
sensing the current through an accurate sense
resistor.
MP2618 regulates the charge voltage and
charge current using two control loops to realize
high accuracy CC charge and CV charge.
The system power path management function
ensures continuous supply to the system by
automatically selecting the input or the battery.
Power path management separates charging
current from system load. When the MP2618
realizes current sharing of the input current,
charge current will drop down according to the
increase of the system current.
Fault condition protection includes cycle-by-cycle
current limiting, and thermal shutdown. Other
safety features include battery temperature
monitoring, charge status indication and
programmable timer to cease the charging cycle.
The MP2618 is available in a 28-pin, 4mmx5mm
QFN package.
FEATURES
Charges 2-3 cell Li-Ion battery packs
Wide Operating Input Range
Up to 2A Programmable Charging Current
Power Path Management with Current
Sharing
±0.75% VBATT Accuracy
0.28Internal Power MOSFET Switch
Up to 90% Efficiency
Fixed 600kHz Frequency
Preconditioning for fully depleted batteries
Charging Operation Indicator
Input Supply and battery fault indicator
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Battery Temperature Monitor and Protection
APPLICATIONS
Netbook PC
Distributed Power Systems
Chargers for 2-Cell or 3-Cell Li-Ion
Batteries
Pre-Regulator for Linear Regulators
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
MP2618 Rev. 0.92
7/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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