2A Single Cell Switch Mode Battery Charger
with Power Path Management and Boost OTG
The Future of Analog IC Technology
The MP2635A is a highly-integrated, flexible,
switch-mode battery charge management and
system power path management device for a
single-cell Li-ion and Li-Polymer battery used in
a wide range of portable applications.
The MP2635A has two operating modes—
charge mode and boost mode—to allow
management of system and battery power
based on the state of the input.
When input power is present, the device
operates in charge mode. It automatically
detects the battery voltage and charges the
battery in the three phases: trickle current,
constant current and constant voltage. Other
features include charge termination and auto-
recharge. This device also integrates input
current limit in order to manage input power and
meet the priority of the system power demand.
In the absence of an input source, the
MP2635A switches to boost mode through the
MODE pin to power the SYS pins from the
battery. The OLIM pin programs the output
current limit in boost mode. The MP2635A also
allows an output short-circuit thanks to an
output disconnect feature, and can auto-recover
when the short circuit fault is removed.
The MP2635A provides full operating status
indication to distinguish charge mode from
4.5V-to-6V Operating Input Voltage Range
Integrated Input-Current-Based Power
Up to 2A Programmable Charge Current
Selectable 3.6V/ 4.2V Charge Voltage with
Negative Temperature Coefficient Pin for
Battery Temperature Monitoring
Programmable Timer Back-Up Protection
Thermal Regulation and Thermal Shutdown
Internal Battery Reverse Leakage Blocking
Reverse Boost Operation Mode for System
Up to 91% 5V Boost Mode Efficiency @ 1A
Programmable Output Current Limit for
Integrated Short Circuit Protection for Boost
Power-Bank Applications for Smart-Phone,
Tablet and Other Portable Devices
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
The MP2635A achieves low EMI/EMC
performance with well-controlled switching
To guarantee safe operation, the MP2635A
limits the die temperature to a preset value
120oC. Other safety features include input over-
voltage protection, battery over-voltage
protection, thermal shutdown, battery
temperature monitoring, and a programmable
timer to prevent prolonged charging of a dead
MP2635A Rev. 1.01
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