LTC3556
36
3556f
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 0208 • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
Pushbutton Start with Automatic Sequencing, Reverse Input Voltage Protection and 10 Second Push and Hold Hard Shutdown
1225
10
MP1
USB
CONNECTOR
V
OUT3
7
8
FB3
V
C3
15
PGOODALL
9
SWAB3
14
SWCD3
4
SW1
V
BUS
LTC3556
DV
CC
1
LDO3V3
28
27
1M
MN1
ENALL
SEQ
29
GND
MN1: 2N7002
MP1: SILICONIX Si2333DS
0.1µF
6
FB1
13,16
I
2
C (SCL, SDA)
10µF
1µF
1k
4.7k
10k
10µF
19
2
SW2
17
3556 TA03
FB2
10µF
MEMORY
CORE
I/O
SCL
SDA
SEND I
2
C CODE: “0x12FF1C
ONCE POWER IS DETECTED
PART NUMBER DESCRIPTION COMMENTS
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 Efficiency 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. 24-Lead 4mm × 4mm QFN
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 Efficiency: Up to
92%. 24-Lead 4mm × 4mm QFN Package
LTC3552 Standalone Linear Li-Ion Battery
Charger with Adjustable Output Dual
Synchronous Buck Converter
Synchronous Buck Converter, Efficiency: >90%, Adjustable Outputs at 800mA and 400mA,
Charge Current Programmable up to 950mA, USB Compatible, 16-Lead 5mm × 3mm DFN
Package
LTC3555/
LTC3555-1
High Effi ciency USB Power Manager Plus
Triple Step-Down DC/DC
Maximizes Available Power from USB Port, Bat-Track, “Instant On” Operation, 1.5A Max
Charge Current, 180m Ideal Diode with <50m Option, 3.3V/25mA Always-On LDO,
Three Synchronous Buck Regulators (400mA/400mA/1A), 4mm × 5mm QFN28 Package
LTC3557/
LTC3557-1
Linear USB Power Manager with Li-Ion/
Polymer Charger and Triple Synchronous
Buck Converter
Complete Multifunction ASSP: Linear Power Manager and Three Buck Regulators
Charge Current Programmable up to 1.5A from Wall Adapter Input, Thermal Regulation,
Synchronous Buck Efficiency: >95%, ADJ Outputs: 0.8V to 3.6V at 400mA/400mA/600mA
Bat-Track Adaptive Output Control, 200m Ideal Diode, 4mm × 4mm QFN28 Package
LTC4085 Linear USB Power Manager with Ideal
Diode Controller and Li-Ion Charger
Charges Single Cell Li-Ion Batteries Directly from a USB Port, Thermal Regulation, 200m
Ideal Diode with <50m option, 4mm × 3mm DFN14 Package
LTC4088/
LTC4088-1
High Efficiency USB Power Manager and
Battery Charger
Maximizes Available Power from USB Port, Bat-Track, “Instant On” Operation, 1.5A Max
Charge Current, 180m Ideal Diode with <50m Option, 3.3V/25mA Always-On LDO,
4mm × 3mm DFN14 Package
Hot Swap is a trademark of Linear Technology Corporation.
