LTC3558
32
3558f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 0408 • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC3550 Dual Input USB/AC Adapter Li-Ion Battery
Charger with Adjustable Output 600mA
Buck Converter
Synchronous Buck Converter, Effi ciency: 93%, Adjustable Output at 600mA, Charge Current:
950mA Programmable, USB Compatible, Automatic Input Power Detection
and Selection
LTC3552 Standalone Linear Li-Ion Battery Charger
with Adjustable Output Dual Synchronous
Buck Converter
Synchronous Buck Converter, Effi ciency: >90%, Adjustable Outputs at 800mA and
400mA, Charge Current Programmable Up to 950mA, USB Compatible, 5mm × 3mm
DFN-16 Package
LTC3552-1 Standalone Linear Li-Ion Battery Charger
with Dual Synchronous Buck Converter
Synchronous Buck Converter, Effi ciency: >90%, Outputs 1.8V at 800mA and 1.575 at
400mA, Charge Current Programmable up to 950mA, USB Compatible
LTC3455 Dual DC/DC Converter with USB Power
Manager and Li-Ion Battery Charger
Seamless Transition Between Input Power Sources: Li-Ion Battery, USB and 5V Wall
Adapter, Two High Effi ciency DC/DC Converters: Up to 96%, Full Featured Li-Ion Battery
Charger with Accurate USB Current Limiting (500mA/100mA) Pin-Selectable Burst Mode
Operation, Hot Swap
TM
Output for SDIO and Memory Cards, 4mm × 4mm QFN-24 Package
LTC3456 2-Cell, Multi-Output DC/DC Converter with
USB Power Manager
Seamless Transition Between 2-Cell Battery, USB and AC Wall Adapter Input Power Sources,
Main Output: Fixed 3.3V Output, Core Output: Adjustable from 0.8V to V
BATT(MIN)
, Hot Swap
Output for Memory Cards, Power Supply Sequencing: Main and Hot Swap Accurate USB
Current Limiting, High Frequency Operation: 1MHz, High Effi ciency: Up to 92%, 4mm ×
4mm QFN-24 Package
LTC3559 USB Charger with Dual Buck Regulators Adjustable, Synchronous Buck Converters, Effi ciency >90%, Outputs: Down to 0.8V at
400mA Each, Charge Current Programmable Up to 950mA, USB-Compatible, 3mm × 3mm
QFN-16 Package
LTC4080 500mA Standalone Charger with 300mA
Synchronous Buck
Charges Single-Cell Li-Ion Batteries, Timer Termination + C/10, Thermal Regulation, Buck
Output: 0.8V to V
BAT
, Buck Input V
IN
: 2.7V to 5.5V, 3mm × 3mm DFN-10 Package
Hot Swap is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIONS
V
CC
NTC
PROG
SUSP
HPWR
MODE
4.7µH
10µF
649k
324k
22µF
10pF
UP TO 950mA
LTC3558
GND
2.2µH
887
EN1
EN2
BAT
DIGITAL
CONTROL
SW1
FB1
SWAB2
SWCD2
V
OUT2
FB2
V
C2
1.2V AT 400mA
SINGLE
Li-lon CELL
(2.7V TO 4.2V)
105k 15k
324k
121k
33pF
330pF
10pF
3.3V AT 400mA
3558 TA03
+
CHRG
1µF
100k
100k (NTC)
510
5V WALL
ADAPTER
GND2
(EXPOSED
PAD)
PV
IN1
PV
IN2
10µF
Figure 13. Battery Charger Can Charge a Battery with Up to 950mA When Powered From a Wall Adapter
