2.5A Single Cell Switch Mode Battery Charger
with Power Path Management (PPM)
and 2.4A Boost Current with Trickle Timer
The MP2637 is a highly-integrated, flexible,
switch-mode battery charger with system power
path management, designed for single-cell Li-
ion or Li-Polymer batteries used in a wide range
The MP2637 can operate in both charge mode
and boost mode to allow full system and battery
When input power is present, the device
operates in charge mode. It automatically
detects the battery voltage and charges the
battery in three phases: trickle current, constant
current and constant voltage. Other features
include charge termination and auto-recharge.
This device also integrates both input current
limit and input voltage regulation in order to
manage input power and meet the priority of the
system power demand.
In the absence of an input source, the MP2637
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 MP2637 also allows for output
short circuit protection to completely disconnect
the battery from the load in the event of a short
circuit fault. Normal operation will recover as
soon as the short circuit fault is removed. The
MP2637 provides full operating status indication
to distinguish charge mode from boost mode.
To guarantee safe operation, the MP2637 limits
the die temperature to a preset value of 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 battery.
Up to 16V Sustainable Input Voltage
4.5V-to-6V Operating Input Voltage Range
Power Management function, Integrated
Input-Current Limit, Input Voltage
Up to 2.5A Programmable Charge Current
Selectable 4.2V/ 4.35V 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
Integrated Over Voltage Protection and
Over Current Protection for Pass-Through
Reverse Boost Operation Mode for System
Up to 2.4A Programmable Output Current
Limit for Boost Mode
Integrated Short Circuit Protection and
Output Over Voltage Protection for Boost
Power-Bank Applications for Smart-Phone
Tablet and Other Portable Devices
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For
MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
MP2637 Rev. 1.04
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