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LTC1479CG

Description
PowerPath Controller for Dual Battery Systems 6V to 28V 36-Pin SSOP Tube
CategoryPower/power management    The power supply circuit   
File Size345KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LTC1479CG Overview

PowerPath Controller for Dual Battery Systems 6V to 28V 36-Pin SSOP Tube

LTC1479CG Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerADI
package instructionSSOP,
Reach Compliance Codenot_compliant
ECCN codeEAR99
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G36
JESD-609 codee0
length12.8 mm
Humidity sensitivity level1
Number of channels3
Number of functions1
Number of terminals36
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.99 mm
Maximum supply voltage (Vsup)28 V
Minimum supply voltage (Vsup)6 V
Nominal supply voltage (Vsup)25 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width5.3 mm
LTC1479
PowerPath Controller
for Dual Battery Systems
FEATURES
s
s
DESCRIPTION
The LTC
®
1479 is the “heart” of a total power management
solution for single and dual battery notebook computers
and other portable equipment. The LTC1479 directs power
from up to two battery packs and a DC power source to the
input of the main system switching regulator. It works in
concert with related LTC power management products
(e.g. LTC1435, LT
®
1511, etc.) to create a total system
solution; starting from the batteries and the DC power
source, and ending at the input of each of the computer’s
complex loads. A system-provided power management
µP
monitors and actively directs the LTC1479.
The LTC1479 uses low loss N-channel MOSFET switches
to direct power from three main sources. An adaptive
current limiting scheme reduces capacitor and battery
inrush current by controlling the gates of the MOSFET
switches during transitions. The LTC1479 interfaces di-
rectly to the LT1510, LT1511 and LT1620/LTC1435 bat-
tery charging circuits.
, LTC and LT are registered trademarks of Linear Technology Corporation.
PowerPath is a trademark of Linear Technology Corporation.
s
s
s
s
s
s
Complete Power Path Management for Two
Batteries, DC Power Source, Charger and Backup
Compatible with Li-Ion, NiCd, NiMH and Lead-Acid
Battery Chemistries
“3-Diode” Mode Ensures Powers is Available
under “Cold Start” Conditions
All N-Channel Switching Reduces Power Losses
Capacitor and Battery Inrush Current Limited
“Seamless” Switching Between Power Sources
Independent Charging and Monitoring of Two
Battery Packs
New, Small Footprint, 36-Lead SSOP Package
APPLICATIONS
s
s
s
s
s
Notebook Computer Power Management
Portable Instruments
Handheld Terminals
Portable Medical Equipment
Portable Industrial Control Equipment
TYPICAL APPLICATION
Dual Battery PowerPath
TM
Controller System Block Diagram
DCIN
SW A/B
SW C/D
SW E/F
SW G
BAT2
BATTERY CHARGER
(LT1510/LT1511/
LT1620/LTC1435)
BACKUP
REGULATOR
(LT1304)
POWER
MANAGEMENT
µP
SW H
HIGH EFFICIENCY
DC/DC SWITCHING
REGULATOR
(LTC1435/LTC1438
ETC.)
AC
ADAPTER
R
SENSE
BAT1
LTC1479
PowerPath CONTROLLER
STATUS &
CONTROL
U
U
U
+
C
IN
5V
1479 TA01
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