MP2612

2A,24V Input, 600kHz

2-3 Cells Switching Li-Ion Battery Charger

MP2612 Rev. 1.0

www.MonolithicPower.com

1

9/7/2011

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© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2612 is a monolithic switching charger

for 2-3 cells series Li-Ion cells battery 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.

MP2612 regulates the charge current and

charge voltage using two control loops to

realize high accuracy CC charge and CV

charge.

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 finish the charging cycle.

The MP2612 requires a minimum number of

readily available standard external components.

The MP2612 is available in 16-pin 4mm x 4mm

QFN package.

FEATURES

 Charges 2-3 Cells Series Li-Ion Battery

Packs

 Wide Operating Input Range

 Up to 2 A Programmable Charging Current

 0.2Ω Internal 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

 Distributed Power Systems

 Chargers for 2-Cell or 3-Cell Li-Ion Batteries

 Pre-Regulator for Linear Regulators

 Smart Phones

 Net-book

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“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

Figure 1—Standalone Switching Charger