The Future of Analog IC Technology
2A, 24V Input, 1.1MHz, 1- or 2- Cell
4.1V/Cell Switching Li-Ion Battery Charger
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
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
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% VBATT 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
Cycle-by-Cycle Over-Current Protection
Battery Temperature Monitor and Protection
Distributed Power Systems
Chargers for 1-Cell or 2-Cell Li-Ion Batteries
Portable DVD Player
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Monolithic Power Systems, Inc.
MP26101 Rev. 1.0
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