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LTC4097EDDB#TRPBF

Description
Linear Battery Charger Li-Ion/Li-Pol 1200mA 4.2V 12-Pin DFN EP T/R
CategoryBattery management   
File Size207KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC4097EDDB#TRPBF Overview

Linear Battery Charger Li-Ion/Li-Pol 1200mA 4.2V 12-Pin DFN EP T/R

LTC4097EDDB#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeLinear Battery Charger
Battery TypeLi-Ion|Li-Pol
Maximum Supply Current (mA)0.8
Minimum Operating Supply Voltage (V)4.25
Maximum Operating Supply Voltage (V)5.5
Output Voltage (V)4.2
Output Current (mA)1200(Max)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count12
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width2
PCB changed12
Lead ShapeNo Lead
LTC4097
USB/Wall Adapter
Standalone Li-Ion/Polymer
Battery Charger
FEATURES
DESCRIPTION
The LTC
®
4097 is a standalone linear battery charger that
is capable of charging a single-cell Li-Ion or Li-Polymer
battery from both wall adapter and USB inputs. The charger
can detect power at the inputs and automatically select
the appropriate power source for charging.
No external sense resistor or blocking diode is required
for charging due to the internal MOSFET architecture.
Internal thermal feedback regulates the battery charge
current to maintain a constant die temperature during high
power operation or high ambient temperature conditions.
The float voltage is fixed at 4.2V and the charge current
is programmed with an external resistor. The LTC4097
terminates the charge cycle when the charge current drops
below the user programmed termination threshold after
the final float voltage is reached. The LTC4097 can be put
into shutdown mode reducing the DCIN supply current to
20µA, the USBIN supply current to 10µA, and the battery
drain current to less than 2µA even with power applied
to both inputs.
Other features include trickle charge, automatic recharge,
undervoltage lockout, charge status output, an NTC therm-
istor input used to monitor battery temperature and VNTC
power present output with 120mA drive capability.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*Protected by U.S. Patents including 6522118.
Charges Single-Cell Li-Ion/Polymer Battery from
Wall Adapter and USB Inputs
Automatic Input Detection (Wall Adapter Input has
Charging Priority)
Charge Current Programmable up to 1.2A from
Wall Adapter Input
Programmable Charge Current Termination
NTC Thermistor Input for Temperature Qualified
Charging
Independent DC, USB Charge Current Programming
Preset Float Voltage with ±0.6% Accuracy
Thermal Regulation Maximizes Charge Rate Without
Risk of Overheating*
Charge Status Output
Automatic Recharge
20µA Charger Quiescent Current in Shutdown
Available in a Thermally Enhanced, Low Profile
(0.75mm) 12-Lead (3mm
×
2mm) DFN Package
APPLICATIONS
Cellular Telephones
MP3 Players
Portable Handheld Devices
TYPICAL APPLICATION
Dual Input Battery Charger for Single-Cell Li-Ion Battery
LTC4097
WALL
ADAPTER
USB
PORT
1µF
1µF
2k
1%
BAT
DCIN
USBIN
IUSB
IDC
1.24k
1%
VNTC
HPWR
NTC
ITERM
GND
2k
1%
T
800mA (WALL)
100mA/500mA (USB)
Complete Charge Cycle (1100mAh Battery)
1000
800
600
400
200
0
4.2
4.0
3.8
3.6
3.4
5.0
2.5
0
0
0.5
1.0
2.0
1.5
TIME (HR)
2.5
3.0
4097f
+
4.2V
SINGLE CELL
Li-Ion BATTERY
BATTERY
CHARGE
VOLTAGE (V) CURRENT (mA)
CONSTANT VOLTAGE
USBIN = 5V
T
A
= 25°C
R
IDC
= 1.24k
R
IUSB
= 2k
HPWR = 5V
4097 TA01
DCIN
VOLTAGE (V)
4097 TA01b
1

LTC4097EDDB#TRPBF Related Products

LTC4097EDDB#TRPBF LTC4097EDDB#PBF LTC4097EDDB#TRMPBF
Description Linear Battery Charger Li-Ion/Li-Pol 1200mA 4.2V 12-Pin DFN EP T/R Linear Battery Charger Li-Ion/Li-Pol 1200mA 4.2V 12-Pin DFN EP T/R Linear Battery Charger Li-Ion/Li-Pol 1200mA 4.2V 12-Pin DFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant
ECCN (US) EAR99 - EAR99
Part Status Active Unconfirmed Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01
Type Linear Battery Charger Linear Battery Charger Linear Battery Charger
Battery Type Li-Ion|Li-Pol Li-Ion|Li-Pol Li-Ion|Li-Pol
Maximum Supply Current (mA) 0.8 0.8 0.8
Minimum Operating Supply Voltage (V) 4.25 4.25 4.25
Maximum Operating Supply Voltage (V) 5.5 5.5 5.5
Output Voltage (V) 4.2 4.2 4.2
Output Current (mA) 1200(Max) 1200(Max) 1200(Max)
Minimum Operating Temperature (°C) -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85
Supplier Temperature Grade Extended Extended Extended
Packaging Tape and Reel Tape and Reel Tape and Reel
Pin Count 12 12 12
Standard Package Name DFN DFN DFN
Supplier Package DFN EP DFN EP DFN EP
Mounting Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 3 3 3
Package Width 2 2 2
PCB changed 12 12 12
Lead Shape No Lead No Lead No Lead
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