MP2623 Datasheet: 1- or2-Cell Switching LiFePO4 Battery Charger





MP2623 1- or2-Cell Switching LiFePO4 Battery Charger Datasheet

Part Number MP2623
Description 1- or2-Cell Switching LiFePO4 Battery Charger
Manufacture MPS
Total Page 16 Pages
PDF Download Download MP2623 Datasheet PDF

Features: The Future of Analog IC Technology MP26 23 Stand-Alone, 2A, 1- or2-Cell Switchi ng LiFePO4 Battery Charger DESCRIPTION The MP2623 is a monolithic, DC-DC, ste pdown, switching charger for a 1-or-2-c ell serial LiFePO4 battery. It has an i ntegrated high-side power MOSFET that c an output up to a 2A charge current. It also has peak-current–mode control f or fast loop response and easy compensa tion. The MP2623 uses a sense resistor to control a programmable charge curren t, and accurately regulates the charge current and the charge voltage using tw o control loops. The MP2623 has multipl e fault-condition protections that incl ude cycle-by-cycle current limiting and thermal shutdown. Other safety feature s include battery temperature monitorin g and protection, charge status indicat ion and a programmable timer to halt ch arging after a set time period. The MP2 623 requires a minimal number of readil y-available external components. The MP 2623 is available in a 4mm×4mm 16-pin QFN package. FEATURES  Ch.

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The Future of Analog IC Technology
MP2623
Stand-Alone, 2A, 1- or2-Cell
Switching LiFePO4 Battery Charger
DESCRIPTION
The MP2623 is a monolithic, DC-DC, step-
down, switching charger for a 1-or-2-cell serial
LiFePO4 battery. It has an integrated high-side
power MOSFET that can output up to a 2A
charge current. It also has peak-current–mode
control for fast loop response and easy
compensation.
The MP2623 uses a sense resistor to control a
programmable charge current, and accurately
regulates the charge current and the charge
voltage using two control loops.
The MP2623 has multiple fault-condition
protections that include cycle-by-cycle current
limiting and thermal shutdown. Other safety
features include battery temperature monitoring
and protection, charge status indication and a
programmable timer to halt charging after a set
time period.
The MP2623 requires a minimal number of
readily-available external components.
The MP2623 is available in a 4mm×4mm 16-pin
QFN package.
FEATURES
Charges 1- and 2-Cell LiFePO4 Battery
Packs
Wide Operating-Input Range
Programmable Charging Current of up to 2A
±0.75% VBATT Accuracy
0.2Integrated Power MOSFET
Up to 90% Efficiency
Fixed 1.1MHz Frequency
Preconditioning for Fully-Depleted Batteries
Charging Status Indicator
Input Supply Fault Indicator
Thermal Shutdown
Cycle-by-Cycle Over-Current Protection
Battery Temperature Monitor and Protection
APPLICATIONS
Power Tools and Portable Equipment
Handheld Terminals
LiFePO4 Battery Chargers
All MPS parts are lead-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.
TYPICAL APPLICATION
VIN
5.5V to 24V
CIN
10
D1
C1
4.7
C3
1
R3
10k
R1 R2
VIN
VREF33
SW
C7
VCC MP2623 BST 0.1
L
4.7
D2
CHGOK
ACOK
CELLS
CSP
BATT
COMPI
R5 750
RS1
100 m
C2
1-2 Cell
LiFePO4
22
RNTC
10k
NTC
ON OFF
EN
COMPV
GND TMR
R4 2.5k
C6
0.1
C4
2.2nF
C5
2. 2nF
MP2623 Rev. 1.0
12/26/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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