MP26101DR-LF-Z Datasheet, PDF (1/16 Pages) MPS Industries, Inc. – 2A, 24V Input, 1.1MHz, 1- or 2- Cell 4.1V/Cell Switching Li-Ion Battery Charger

The Future of Analog IC Technology
MP26101
2A, 24V Input, 1.1MHz, 1- or 2- Cell
4.1V/Cell Switching Li-Ion Battery Charger
DESCRIPTION
The MP26101 is a monolithic switching charger
for 1- or 2-cell Li-Ion battery packs. It has a
built-in internal power MOSFET, and can output
up to 2A of charge current with current mode
control for fast loop response and easy
compensation. The charge current can be
programmed through an accurate sense
resistor.
MP26101 regulates the charge current and
charge voltage using two control loops to
realize high-accuracy for both constant-current
charge and constant-voltage charge.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown. Other
safety features include battery temperature
monitoring, a charge status indicator, and a
programmable timer to halt the charging cycle.
The MP26101 requires a minimal number of
readily-available external components.
The MP26101 is available in 4mm×4mm 16-pin
QFN package.
FEATURES
 Charges 1- or 2-cell Li-Ion battery packs
 4.1V/Cell Charge Full Voltage
 3.9V/Cell Auto-recharge Threshold
 Wide 5V to 24V Operating Input Range
 Up to 2A Programmable Charging Current
 ±0.75% V_BATT Accuracy
 0.2Ω Internal Power MOSFET
 Up to 90% Efficiency
 Fixed 1.1MHz Frequency
 Preconditioning for Fully-Depleted Batteries
 Charging Status 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 1-Cell or 2-Cell Li-Ion Batteries
 Smartphones
 Portable DVD Player
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Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP26101 Rev. 1.0
www.MonolithicPower.com
1
9/7/2011
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