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LTC4162EUFD-FST#TRPBF

Description
35V/3.2A MULTI-CELL LIFEPO4 STEP
Categorysemiconductor    Power management   
File Size2MB,52 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric View All

LTC4162EUFD-FST#TRPBF Overview

35V/3.2A MULTI-CELL LIFEPO4 STEP

LTC4162EUFD-FST#TRPBF Parametric

Parameter NameAttribute value
Package/casing28-WFQFN Exposed Pad
Supplier device packaging28-QFN(4x5)
FEATURES
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LTC4162-F
35V/3.2A Multicell
LiFePO
4
Step-Down Battery Charger
with PowerPath and I
2
C Telemetry
DESCRIPTION
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 I
2
C port. The I
2
C 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 LiFePO
4
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.
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n
n
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LiFePO
4
Battery Charger with Termination
Wide Charging Input Voltage Range: 4.5V to 35V
High Efficiency Synchronous Operation
16-Bit Digital Telemetry System Monitors V
BAT
,
I
BAT
, R
BAT
, T
BAT
, T
DIE
, V
IN
, I
IN
, V
OUT
Charges 1-9 Lithium Iron Phosphate Cells
Input Undervoltage Charge Current Limit Loop
Input MPPT for Solar Panel Inputs
Input Current Limit Prioritizes System Load Output
Low Loss PowerPath™
Instant-On Operation with Discharged or Missing
Battery
JEITA Temperature Controlled Charging
Pin Compatible with Li-Ion and SLA Versions
APPLICATIONS
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Medical Instruments
USB-C Power Delivery
Industrial Handhelds
Ruggedized Notebooks
Tablet Computers
TYPICAL APPLICATION
1-9 Cell, 3.2A Step-Down Switching Battery Charger with PowerPath
V
IN
V
IN
INFET CLP
I
2
C
CLN V
OUT
BATFET
SW
CSP
LTC4162-F
CELL
COUNT
CSN
BATSENS+
NTCBIAS
NTC
GND
T
EFFICIENCY (%)
V
OUT
Charging Efficiency vs Input Voltage by Cell Count
100
I
CHARGE
= 2.5A
95
90
85
1 CELL
2 CELLS
3 CELLS
4 CELLS
5 CELLS
6 CELLS
5
10
15
20
80
75
7 CELLS
8 CELLS
9 CELLS
25
30
35
INPUT VOLTAGE (V)
4162F TA01a
4162F TA01b
Rev A
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