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Analog Devices Semiconductor Electronic Components Datasheet

LTC4162EUFD-F Datasheet

35V/3.2A Multicell LiFePO4 Step-Down Battery Charger

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LTC4162-F
FEATURES
35V/3.2A Multicell
LiFweiPthOP4oSwteepr-PDaothwannBdatI2teCryTeClehmaregteryr
DESCRIPTION
nn LiFePO4 Battery Charger with Termination
nn Wide Charging Input Voltage Range: 4.5V to 35V
nn High Efficiency Synchronous Operation
nn 16-Bit Digital Telemetry System Monitors VBAT,
IBAT, RBAT, TBAT, TDIE, VIN, IIN, VOUT
nn Charges 1-9 Lithium Iron Phosphate Cells
nn Input Undervoltage Charge Current Limit Loop
nn Input MPPT for Solar Panel Inputs
nn Input Current Limit Prioritizes System Load Output
nn Low Loss PowerPath™
nn Instant-On Operation with Discharged or Missing
Battery
nn JEITA Temperature Controlled Charging
nn Pin Compatible with Li-Ion and SLA Versions
APPLICATIONS
nn Medical Instruments
nn USB-C Power Delivery
nn Industrial Handhelds
nn Ruggedized Notebooks
nn Tablet Computers
The LTC®4162-F is an advanced monolithic synchronous
step-down switching battery charger and PowerPath
manager that seamlessly manages power distribution
between input sources such as wall adapters, backplanes,
solar panels, etc., and a rechargeable lithium iron phos-
phate battery.
A high resolution measurement system provides exten-
sive telemetry information for circuit voltages, currents,
battery resistance and temperature which can all be read
back over the I2C port. The I2C port can also be used to
configure many charging parameters including charging
voltages and currents, termination algorithms and numer-
ous system status alerts.
The LTC4162-F can charge LiFePO4 cell stacks from 1 cell
to 9 cells with as much as 3.2A of charge current.
The power path topology decouples the output voltage
from the battery allowing a portable product to start up
instantly under very low battery voltage conditions.
The LTC4162-F is available in a thermally enhanced 28-
pin 4mm × 5mm × 0.75mm QFN surface mount package.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
1-9 Cell, 3.2A Step-Down Switching Battery Charger with PowerPath
Charging Efficiency vs Input Voltage by Cell Count
VIN
VIN INFET CLP
I2C
CLN VOUT
BATFET
SW
CSP
VOUT
100
ICHARGE = 2.5A
95
90
CELL
COUNT
LTC4162-F
CSN
BATSENS+
NTCBIAS
NTC
GND
Document Feedback
T
4162F TA01a
85
1 CELL
2 CELLS
80
3 CELLS
4 CELLS
7 CELLS
5 CELLS
8 CELLS
75
6 CELLS
9 CELLS
5 10 15 20 25 30 35
INPUT VOLTAGE (V)
4162F TA01b
For more information www.analog.com
Rev A
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4162EUFD-F Datasheet

35V/3.2A Multicell LiFePO4 Step-Down Battery Charger

No Preview Available !

LTC4162-F
TABLE OF CONTENTS
Features............................................................................................................................. 1
Applications........................................................................................................................ 1
Typical Application ................................................................................................................ 1
Description......................................................................................................................... 1
Absolute Maximum Ratings...................................................................................................... 3
Order Information.................................................................................................................. 3
Pin Configuration.................................................................................................................. 3
Electrical Characteristics......................................................................................................... 4
Typical Performance Characteristics........................................................................................... 7
Pin Functions......................................................................................................................10
Block Diagram.....................................................................................................................12
ESD Diagram......................................................................................................................13
Timing Diagram...................................................................................................................14
Operation.......................................................................................................................... 15
Applications Information........................................................................................................29
Register Descriptions............................................................................................................36
Typical Applications..............................................................................................................48
Package Description.............................................................................................................50
Revision History..................................................................................................................51
Typical Application...............................................................................................................52
Related Parts......................................................................................................................52
Rev A
2
For more information www.analog.com


Part Number LTC4162EUFD-F
Description 35V/3.2A Multicell LiFePO4 Step-Down Battery Charger
Maker Analog Devices
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LTC4162EUFD-F Datasheet PDF






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