ltc4078 Linear Technology Corporation, ltc4078 Datasheet - Page 16

• Manufacturer Part Number: ltc4078
• Description: Dual Input Li-ion Battery Charger With Overvoltage Protection
• Manufacturer: Linear Technology Corporation

LTC4078/LTC4078X
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LTC3455
LTC4053
LTC4054/LTC4054X Standalone Linear Li-Ion Battery Charger with
LTC4055
LTC4058/LTC4058X Standalone 950mA Lithium-Ion Charger in DFN
LTC4061
LTC4066
LTC4068/LTC4068X Standalone Linear Li-Ion Battery Charger with
LTC4075/
LTC4075HVX
LTC4076
LTC4077
LTC4085
LTC4089/
LTC4089-5
LTC4411/LTC4412
ThinSOT and PowerPath are trademarks of Linear Technology Corporation.
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
Dual DC/DC Converter with USB Power
Management and Li-Ion Battery Charger
USB Compatible Monolithic Li-Ion Battery
Charger
Integrated Pass Transistor in ThinSOT™
USB Power Controller and Battery Charger
Standalone Li-Ion Charger with Thermistor
Interface
USB Power Controller and Li-Ion Linear Battery
Charger with Low-Loss Ideal Diode
Programmable Termination
Dual Input Standalone Li-Ion Battery Charger
Dual Input Standalone Li-Ion Battery Charger
Dual Input Standalone Li-Ion Battery Charger
USB Power Manager with Ideal Diode Controller
and Li-Ion Charger
USB Power Manager with Ideal Diode Controller
and High Effi ciency Li-Ion Battery Charger
Low Loss PowerPath™ Controller in ThinSOT
●
FAX: [phone]
ADAPTER
POWER
WALL
USB
●
2.1k
1%
www.linear.com
1μF
Full Featured Li-Ion Charger
1.24k
1%
1μF
DCIN
USBIN
IUSB
IDC
COMMENTS
Effi ciency >96%, Accurate USB Current Limiting (500mA/100mA), 4mm × 4mm
QFN-24 Package
Standalone Charger with Programmable Timer, Up to 1.25A Charge Current
Thermal Regulation Prevents Overheating, C/10 Termination, C/10 Indicator,
Up to 800mA Charge Current
Charges Single-Cell Li-Ion Batteries Directly from USB Port, Thermal Regulation,
4mm × 4mm QFN-16 Package
C/10 Charge Termination, Battery Kelvin Sensing, ±7% Charge Accuracy
4.2V, ±0.35% Float Voltage, Up to 1A Charge Current
Seamless Transition Between Input Power Sources: Li-Ion Battery, USB and Wall
Adapter, Low Loss (50mΩ) Ideal Diode, 4mm × 4mm QFN-24 Package
Charge Current Up to 950mA, Thermal Regulation, 3mm × 3mm DFN-8 Package
950mA Charger Current, Thermal Regulation, C/X Charge Termination, USB
Charge Current Set Via Resistor, 3mm × 3mm DFN Package; LTC4075HVX Has
22V Input Protection.
950mA Charger Current, Thermal Regulation, C/X Charge Termination,
Fixed C or C/5 USB Charge Current for Low Power USB Operation, 3mm × 3mm
DFN Package
950mA Charger Current, Thermal Regulation, C/X Charge Termination,
Programmable C or C/x USB Charge Current for Low Power USB Operation,
Fixed C/10 Wall Adapter and C/10 or C/2 Charge Current Termination,
3mm × 3mm DFN Package
Charges Single-Cell Li-Ion Batteries Directly from USB Port, Thermal Regulation,
200mΩ Ideal Diode with <50mΩ Option, 4mm × 3mm DFN-14 Package
High Effi ciency 1.2A Charger from 6V to 36V (40V Max) Input Charges Single-Cell
Li-Ion Batteries Directly from USB Port, Thermal Regulation, 200mΩ Ideal Diode
with <50mΩ Option, Bat-Track Adaptive Output Control (LTC4089), Fixed 5V
Output (LTC4089-5), 4mm × 3mm DFN-14 Package
Automatic Switching Between DC Sources, Load Sharing, Replaces ORing Diodes
LTC4078
GND
BATDET
ITERM
CHRG
PWR
BAT
1k
1k
1%
1k
800mA (WALL)
475mA (USB)
3.9k
4078X TA02
+
4.2V Li-Ion
BATTERY
PACK
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0308 REV B • PRINTED IN USA
4078xfb