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LTC4162EUFD-L40#PBF

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

LTC4162EUFD-L40#PBF Overview

35V/3.2A MULTI-CELL LITHIUM-ION

LTC4162EUFD-L40#PBF Parametric

Parameter NameAttribute value
Functionbattery monitor
battery chemistryLi-ion/polymer
Number of batteries1 ~ 8
failsafeOvercurrent, overtemperature, overvoltage
interfaceI²C
Operating temperature-40°C ~ 125°C
Package/casing28-WFQFN Exposed Pad
Supplier device packaging28-QFN(4x5)
FEATURES
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LTC4162-L
35V/3.2A Multicell
Lithium-Ion Step-Down Battery Charger
with PowerPath and I
2
C Telemetry
DESCRIPTION
The
LTC
®
4162-L
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-Ion/Polymer
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-L can charge Lithium-Ion cell stacks from
1 cell to 8 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-L 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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Li-Ion/Polymer 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 1-8 Lithium-Ion/Polymer 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 LiFePO
4
and SLA Versions
APPLICATIONS
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Medical Instruments
USB-C Power Delivery
Industrial Handhelds
Ruggedized Notebooks
Tablet Computers
TYPICAL APPLICATION
1-8 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-L
CELL
COUNT
CSN
BATSENS+
NTCBIAS
NTC
GND
T
EFFICIENCY (%)
V
OUT
Charging Efficiency vs Input Voltage by Cell Count
100
7 CELLS
8 CELLS
5 CELLS 6 CELLS
4 CELLS
3 CELLS
2 CELLS
90
1 CELL
95
85
80
I
CHARGE
= 2.5A
75
5
10
15
20
25
30
35
INPUT VOLTAGE (V)
4162L TA01a
4162L TA01b
Rev A
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