LTC3554 Datasheet, PDF (36/36 Pages) Linear Technology – Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators

LTC3554
RELATED PARTS
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, 4mm × 4mm QFN-24
Package
LTC3456
2-Cell, Multioutput 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%, 4mm × 4mm QFN-24 Package
LTC3550
Dual Input USB/AC Adapter Li-Ion Battery Synchronous Buck Converter, Efficiency = 93%, Adjustable Output at 600mA, Charge
Charger with Adjustable Output 600mA Current: 950mA Programmable, USB-Compatible, Automatic Input Power Detection
Buck Converter
and Selection
LTC3552
Standalone Linear Li-Ion Battery Charger Synchronous Buck Converter, Efficiency > 90%, Adjustable Outputs at 800mA and
with Adjustable Output Dual Synchronous 400mA, Charge Current Programmable Up to 950mA, USB-Compatible, 5mm × 3mm
Buck Converter
DFN-16 Package
LTC3552-1
Standalone Linear Li-Ion Battery Charger Synchronous Buck Converter, Efficiency > 90%, Outputs 1.8V at 800mA and 1.575 at
with Dual Synchronous Buck Converter 400mA, Charge Current Programmable Up to 950mA, USB-Compatible
LTC3557
USB Power Manager with Li-Ion Charger, Triple Step-Down Switching Regulators (600mA, 400mA); Seamlessly Transition Input
Triple Step-Down DC/DC Regulators and Power between Li-Ion Battery, USB, 5V Wall Adapter, or External High Voltage Buck
External High Voltage Buck Control
Regulator with Bat-Track™; 4mm × 4mm QFN Package
LTC3559
LTC3577
USB Charger with Dual Buck Regulators
I²C Controlled USB Power Manager with
Li-Ion Charger, Triple Step-Down DC/DC
Regulators, Dual LDOs and 40V LED
Backlight Driver
Adjustable, Synchronous Buck Converters, Efficiency > 90%, Outputs: Down to 0.8V at
400mA Each, Charge Current Programmable Up to 950mA, USB-Compatible, 3mm ×
3mm QFN-16 Package
High Integration USB Power Management Solution for Portable Products
LTC4080
500mA Standalone Charger with 300mA Charges Single-Cell Li-Ion Batteries, Timer Termination + C/10, Thermal Regulation, Buck
Synchronous Buck
Output: 0.8V to V_BAT, Buck Input V_IN: 2.7V to 5.5V, 3mm × 3mm DFN-10 Package
Hot Swap and Bat-Track are trademarks of Linear Technology Corporation.
36 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3554p
LT 0309 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2009