MP2672A
Boost Charger with Cell Balance for
2-Cell Lithium-Ion Batteries in Series
DESCRIPTION
FEATURES
The MP2672A is a highly integrated, flexible
switch-mode battery charger IC for Lithium-ion
batteries with two cells in series. This makes it
applicable for a wide range of portable
applications.
4.0V to 5.75V Operating Input Voltage
Up to 14V Sustainable Voltage
Up to 2A Configurable Charge Current for
Battery with 2 Cells in Series
Compatible with Host-Control or Standalone
Mode
NVDC Power Path Management
Configurable Input Voltage Limit
Configurable Charge Voltage with 0.5%
Accuracy
When an input power supply is present, the
MP2672A operates in boost mode to charge the
battery with two cells in series. When charging is
enabled, the MP2672A automatically detects the
battery voltage and charges the battery in three
phases: pre-charge, constant current charge,
and constant voltage charge. Other features
include charge termination and auto-recharge.
No External Sense Resistor Required
Integrated Cell-Balancing Circuit for
Mismatched Cells
Preconditioning for Fully Depleted Battery
Flexible New Charging Cycle Initiation
Charging Operation Indicator in Standalone
Mode
Missing Battery Detection in Host-Control
Mode
I2C Port for Flexible System Parameter
Setting and Status Reporting in Host-
Control Mode
The device also has a narrow voltage DC (NVDC)
power structure. With a deeply discharged
battery, the MP2672A regulates the system
output to a minimum voltage level. This powers
the system instantly while simultaneously
charging the battery via the battery FET.
The MP2672A provides a cell balance function.
It can monitor the voltage across each cell, then
equalize the cell’s voltages if the difference
between the two cells exceeds the mismatch
threshold.
Negative Temperature Coefficient (NTC)
Pin for Temperature Monitoring Compliant
with JEITA Standards
The device has two configuration modes:
standalone mode and host-control mode. In
standalone mode, the charging parameters can
be configured by hardware pins. In host-control
mode, the charging parameters can be
configured by the I2C registers.
Built-In Charging Protection and
Configurable Safety Timer
MOSFET Cycle-by-Cycle Over-Current
Protection (OCP)
Thermal Regulation and Thermal Shutdown
Available in a QFN-18 (2mmx3mm)
Package
Diverse and robust protections include a thermal
regulation loop to decrease the charge current in
case the junction temperature exceeds the
thermal loop threshold, and battery temperature
protection that is compliant with JEITA standards.
Other safety features include input over-voltage
protection (OVP), battery OVP, thermal
shutdown, battery temperature monitoring, a
watchdog timer, and a configurable backup timer
to prevent prolonged charging of a dead battery.
APPLICATIONS
Portable Handheld Solutions
Point-of-Sale (POS) Machines
Bluetooth Speakers
E-Cigarettes
General 2-Cell Applications
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.
For MPS green status, please visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
The MP2672A is available in a QFN-18
(2mmx3mm) package.
MP2672A Rev. 1.0
11/10/2020
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
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