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LTC1731ES8-4.1#PBF

Description
Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.1V 8-Pin SOIC N Tube
CategoryBattery management   
File Size165KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC1731ES8-4.1#PBF Overview

Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.1V 8-Pin SOIC N Tube

LTC1731ES8-4.1#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
TypeLinear Battery Charger Controller
Battery TypeNiCd|Li-Pol|Li-Ion|NiMH
Maximum Supply Current (mA)3
Minimum Operating Supply Voltage (V)4.5
Maximum Operating Supply Voltage (V)12
Output Voltage (V)4.1
Output Current (mA)2000(Max)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTube
Pin Count8
Standard Package NameSOP
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length5(Max)
Package Width3.99(Max)
PCB changed8
Lead ShapeGull-wing
LTC1731-4.1/LTC1731-4.2
Single Cell Lithium-Ion Linear
Battery Charger Controllers
FEATURES
s
s
s
s
s
s
s
DESCRIPTIO
s
s
Complete Linear Charger Controller for
1-Cell Lithium-Ion Batteries
1% Voltage Accuracy
Programmable Charge Current
C/10 Charge Current Detection Output
Programmable Charge Termination Timer
Space Saving 8-Pin MSOP Package
Automatic Sleep Mode When Input Supply
is Removed (7µA Battery Drain)
Automatic Trickle Charging of Low Voltage Cells
Programmable for Constant-Current-Only Mode
The LTC
®
1731 is a complete constant-current/constant-
voltage linear charger controller for single cell lithium-ion
batteries. Nickel-cadmium (NiCd) and nickel-metal-hy-
dride (NiMH) batteries can also be charged with constant
current using external termination. The external sense
resistor sets the charge current with 5% accuracy. An
internal resistor divider and precision reference set the
final float potential with
±1%
accuracy. The output float
voltage is set internally to 4.1V (LTC1731-4.1) or 4.2V
(LTC1731-4.2).
When the input supply is removed, the LTC1731 automati-
cally enters a low current sleep mode, dropping the battery
drain current to typically 7µA. An internal comparator
detects the end-of-charge (C/10) condition while a pro-
grammable timer, using an external capacitor, sets the
total charge time. Fully discharged cells are automatically
trickle charged at 10% of the programmed current until
cell voltage exceeds 2.457V.
The LTC1731 is available in the 8-pin MSOP and SO
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
Cellular Phones
Handheld Computers
Charging Docks and Cradles
Programmable Current Source
TYPICAL APPLICATIO
500mA Li-Ion Battery Charger
V
IN
= 6V
MBRM120T3
7
1k
CHARGE
STATUS
V
CC
SENSE
2
CHRG
DRV
8
6
R
SENSE
0.2Ω
Q1
Si9430DY
I
BAT
= 500mA
LTC1731-4.2
3
C
TIMER
0.1µF
TIMER
BAT
PROG
GND
4
1
5
R
PROG
*
19.6k
+
Li-ION
CELL
*SHUTDOWN INVOKED BY FLOATING THE PROG PIN
U
1µF
10µF
1731 TA01
U
U
1

LTC1731ES8-4.1#PBF Related Products

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Description Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.1V 8-Pin SOIC N Tube Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.1V 8-Pin MSOP Tube Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.1V 8-Pin MSOP T/R Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.1V 8-Pin MSOP Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.2V 8-Pin MSOP Tube Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.2V 8-Pin MSOP T/R Linear Battery Charger Controller Li-Ion/Li-Pol/NiCd/NiMH 2000mA 4.1V 8-Pin SOIC N T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Not Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Unconfirmed Active Active Active
Type Linear Battery Charger Controller Linear Battery Charger Controller Linear Battery Charger Controller Linear Battery Charger Controller Linear Battery Charger Controller Linear Battery Charger Controller Linear Battery Charger Controller
Battery Type NiCd|Li-Pol|Li-Ion|NiMH NiMH|NiCd|Li-Pol|Li-Ion Li-Ion|Li-Pol|NiCd|NiMH Li-Ion|Li-Pol|NiCd|NiMH Li-Ion|Li-Pol|NiCd|NiMH Li-Ion|Li-Pol|NiCd|NiMH Li-Ion|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA) 3 3 3 3 3 3 3
Minimum Operating Supply Voltage (V) 4.5 4.5 4.5 4.5 4.5 4.5 4.5
Maximum Operating Supply Voltage (V) 12 12 12 12 12 12 12
Output Voltage (V) 4.1 4.1 4.1 4.1 4.2 4.2 4.1
Output Current (mA) 2000(Max) 2000(Max) 2000(Max) 2000(Max) 2000(Max) 2000(Max) 2000(Max)
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended Extended Extended
Pin Count 8 8 8 8 8 8 8
Standard Package Name SOP MSOP MSOP MSOP MSOP MSOP SOP
Supplier Package SOIC N MSOP MSOP MSOP MSOP MSOP SOIC N
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 1.5(Max) 0.86 0.86 0.86 0.86 0.86 1.5(Max)
Package Length 5(Max) 3 3 3 3 3 5(Max)
Package Width 3.99(Max) 3 3 3 3 3 3.99(Max)
PCB changed 8 8 8 8 8 8 8
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
Packaging Tube Tube Tape and Reel - Tube Tape and Reel Tape and Reel
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