LTC3552 Datasheet, PDF (24/24 Pages) Linear Technology – Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter

LTC3552
TYPICAL APPLICATION
Li-Ion Charger and Step-Down Converters with PowerPath^™
V_IN
5V
V_OUT2
2.5V/400mA
1µF
C_OUT2
4.7µF
CER
1k
1k
4.7µH
RUN1
V_IN
RUN2
V_CC
LTC3552
CHRG
PWR
EN
BAT
POR
MODE/SYNC
SW2
SW1
C_FF2
68pF
887k
V_FB2
GND
280k
ITERM
V_FB2
PROG
1k
2k
1k
10µF
800mA
2.2µH
604k
C_FF1
33pF
301k
+ 4.2V
1-CELL
Li-Ion BATTERY
V_OUT1
1.8V/800mA
C_OUT1
10µF
CER
3552 TA03
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC3455
LTC3548
LTC3550
LTC3550-1
LTC3552-1
LTC4053-4.2
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 adjustable output 600mA Buck Converter
Dual Input USB/AC Adapter Li-Ion Battery Charger
with 600mA Buck Converter
Standalone Linear Li-Ion Battery Charger with Dual
Synchronous Buck Converter
USB Compatible Li-Ion Battery Charger
with Thermal Regulation
Efficiency >96%, Accurate USB Current Limiting (500mA/100mA),
4mm × 4mm QFN-24 Package
High Efficiency: Up to 95%, I_Q: 40μA, 2.25MHz Frequency, MSOP-10 and
3mm × 3mm DFN-10 Packages
Synchronous Buck Converter, Efficiency: 93%, Adjustable Output at 600mA;
Charge Current: 950mA Programmable, USB Compatible, Automatic Input
Power Detection and Selection, 5mm × 3mm DFN-16 Package
Synchronous Buck Converter, Efficiency: 93%, Output: 1.875V at 600mA;
Charge Current: 950mA Programmable, USB Compatible, Automatic Input
Power Detection and Selection, 5mm × 3mm DFN-16 Package
Synchronous Buck Converter, Efficiency: >90%, Output: 1.8V at 800mA,
1.575V at 400mA; Charge Current Programmable Up to 950mA, USB
Compatible, 5mm × 3mm DFN-16 Package
Charges Single-Cell Li-Ion Batteries, From USB, MS Package
LTC4054/LTC4054X Standalone Linear Li-Ion Battery Charger with
Integrated Pass Transistor in ThinSOT^TM
Thermal Regulation Prevents Overheating, C/10 Termination, C/10 Indicator,
Up to 800mA Charge Current
LTC4055
USB Power Controller and Battery Charger
LTC4058/LTC4058X Standalone 950mA Lithium-Ion Charger in DFN
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
LTC4061
Standalone Linear Li-Ion Battery Charger
with Thermistor Input
Charge Current Programmable Up to 1A
LTC4066
Standalone Linear Li-Ion Battery Charger
with Thermistor Input
Charges Single-Cell Li-Ion From USB Port, DFN Package
LTC4068/LTC4068X Standalone Linear Li-Ion Battery Charger with
Programmable Termination
LTC4412
Low-Loss PowerPath^TM Controller in ThinSOT
Charge Current Up to 950mA, Thermal Regulation, 3mm × 3mm
DFN-8 Package
V_IN: 3V to 28V, Automatic Switching Between DC Sources
PowerPath and ThinSOT are registered trademarks of Linear Technology Corporation.
3552f
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
LT 0406 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2006