LTC3552-1 Linear Technology, LTC3552-1 Datasheet - Page 20

• Manufacturer Part Number: LTC3552-1
• Description: Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter
• Manufacturer: Linear Technology

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RELATED PARTS
PART NUMBER
LTC3455
LTC3548
LTC3550-1
LTC4053-4.2
LTC4054/LTC4054X
LTC4055
LTC4058/LTC4058X
LTC4061
LTC4066
LTC4068/LTC4068X
LTC4412
LTC3552-1
TYPICAL APPLICATIO
20
PowerPath and ThinSOT are registered trademarks of Linear Technology Corporation.
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
Dual Synchronous, 400mA/800mA, 2.25HMz
Step-Down DC/DC Regulator
Dual Input USB/AC Adapter Li-Ion Battery Charger
with 600mA Synchronous Buck Converter
USB Compatible Li-Ion Battery Charger
with Thermal Regulation
Standalone Linear Li-Ion Battery Charger with
Integrated Pass Transistor in ThinSOT
USB Power Controller and Battery Charger
Standalone 950mA Lithium-Ion Charger in DFN
Standalone Linear Li-Ion Battery Charger
with Thermistor Input
Standalone Linear Li-Ion Battery Charger
with Thermistor Input
Standalone Linear Li-Ion Battery Charger with
Programmable Termination
Low-Loss PowerPath
V
5V
IN
●
FAX: [phone]
1µF
1.575V/
400mA
V
OUT2
Li-Ion Charger and Step-Down Converters with PowerPath
TM
U
Controller in ThinSOT
C
10µF
CER
OUT2
●
www.linear.com
1k
4.7µH
C
330pF
1k
FF2
TM
V
CHRG
PWR
EN
SW2
V
V
IN
OUT2
FB2
GND
LTC3552-1
ITERM PROG
COMMENTS
Effi ciency >96%, Accurate USB Current Limiting (500mA/100mA),
4mm × 4mm QFN-24 Package
High Effi ciency: Up to 95%, I
3mm × 3mm DFN-10 Packages
Buck Effi ciency: 93%, Charger: Automatic Input Power Detection and
Selection, Charge Current: 950mA, USB Compatible, 3mm × 5mm
DFN-16 Package
Charges Single-Cell Li-Ion Batteries, From USB, MS Package
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
Charge Current Programmable Up to 1A
Charges Single-Cell Li-Ion From USB Port, DFN Package
Charge Current Up to 950mA, Thermal Regulation, 3mm × 3mm
DFN-8 Package
V
1k
IN
: 3V to 28V, Automatic Switching Between DC Sources
RUN1
RUN2
V
SW1
OUT1
V
BAT
V
FB1
CC
1.24k
2.2µH
4.7µF
800mA
C
330pF
FF1
35521 TA03
Q
: 40μA, 2.25MHz Frequency, MSOP-10 and
C
10µF
CER
V
1.8V/800mA
OUT1
OUT1
™
+
© LINEAR TECHNOLOGY CORPORATION 2006
4.2V
1-CELL
Li-Ion BATTERY
1k
LT 0206 • PRINTED IN USA
35521f