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LTC1760IFW#TRPBF

Description
IC MANAGER BATTERY DUAL 48TSSOP
CategoryPower/power management    The power supply circuit   
File Size400KB,48 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC1760IFW#TRPBF Overview

IC MANAGER BATTERY DUAL 48TSSOP

LTC1760IFW#TRPBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Parts packaging codeTSSOP
package instructionTSSOP,
Contacts48
Manufacturer packaging codeFW
Reach Compliance Codecompliant
ECCN codeEAR99
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G48
JESD-609 codee3
length12.5 mm
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals48
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Maximum seat height1.1 mm
Maximum supply voltage (Vsup)28 V
Minimum supply voltage (Vsup)6 V
Nominal supply voltage (Vsup)20 V
surface mountYES
technologyCMOS
Temperature levelAUTOMOTIVE
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width6.1 mm
Base Number Matches1
LTC1760
Dual Smart Battery
System Manager
FEATURES
n
n
DESCRIPTION
The
LTC
®
1760
Smart Battery System Manager is a highly-
integrated SMBus Level 3 battery charger and selector
intended for products using dual smart batteries. Three
SMBus interfaces allow the LTC1760 to servo to the
internal voltage and currents measured by the batteries
while allowing an SMBus Host device to monitor either
battery’s status. Charging accuracy is determined by the
battery’s internal voltage and current measurements,
typically better than ±0.2%.
A proprietary PowerPath architecture supports simultane-
ous charging or discharging of both batteries. Typical battery
run times are extended by up to 10%, while charging times
are reduced by up to 50%. The LTC1760 automatically
switches between power sources in less than 10µs to prevent
power interruption upon battery or wall adapter removal.
The LTC1760 implements all elements of a version 1.1
“Smart Battery System Manager” except for the generation
of composite battery information. An internal multiplexer
cleanly switches the SMBus Host to either of the two
attached Smart Batteries without generating partial mes-
sages to batteries or SMBus Host. Thermistors on both
batteries are automatically monitored for temperature and
disconnection information (SafetySignal).
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath is a trademark of Analog Devices, Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents including *5723970 **6650174.
n
n
n
n
n
n
n
n
n
n
n
n
SMBus Charger/Selector for Two Smart Batteries*
Voltage and Current Accuracy within 0.2% of Value
Reported by Battery
Simplifies Construction of “Smart Battery System
Manager”
Includes All SMBus Charger V1.1 Safety Features
Supports Autonomous Operation without a Host
Allows Both Batteries to Discharge Simultaneously
into Single Load with Low Loss (Ideal Diode)
SMBus Switching for Dual Batteries with Alarm
Monitoring for Charging Battery at All Times
Pin Programmable Limits for Maximum Charge
Current and Voltage Improve Safety
Fast Autonomous PowerPath
Switching (<10µs)
Low Loss Simultaneous Charging of Two Batteries
>95% Efficient Synchronous Buck Charger
AC Adapter Current Limiting* Maximizes Charge Rate
SMBus Accelerator Improves SMBus Timing**
Available in 48-Lead TSSOP Package
APPLICATIONS
n
n
n
Portable Computers and Instruments
Standalone Dual Smart Battery Chargers
Battery Backup Systems
TYPICAL APPLICATION
Dual Battery Charger/Selector System Architecture
DC
IN
BATTERY CURRENT (mA)
Dual vs Sequential Charging
3500
3000
2500
2000
1500
1000
500
0
3500
3000
2500
2000
1500
1000
500
0
BAT1
CURRENT
BAT2
CURRENT
SEQUENTIAL
SYSTEM
POWER
LTC1760
SMBus (HOST)
BAT1
CURRENT
BAT2
CURRENT
DUAL
100
MINUTES
SafetySignal 1
SMBus 1
0
50
100
150
200
TIME (MINUTES)
250
300
SafetySignal 2
SMBus 2
1760 TA01
BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020)
REQUESTED CURRENT = 3A
REQUESTED VOLTAGE = 12.3V
MAX CHARGER CURRENT = 4.1A
1760 TA03
1760fc
For more information
www.linear.com/LTC1760
1

LTC1760IFW#TRPBF Related Products

LTC1760IFW#TRPBF LTC1760CFW#TRPBF LTC1760IFW#PBF
Description IC MANAGER BATTERY DUAL 48TSSOP IC MANAGER BATTERY DUAL 48TSSOP IC MANAGER BATTERY DUAL 48TSSOP
Brand Name Linear Technology Linear Technology Linear Technology
Is it Rohs certified? conform to conform to conform to
Parts packaging code TSSOP TSSOP TSSOP
package instruction TSSOP, TSSOP, TSSOP,
Contacts 48 48 48
Manufacturer packaging code FW FW FW
Reach Compliance Code compliant compliant compliant
ECCN code EAR99 EAR99 EAR99
Adjustable threshold YES YES YES
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code R-PDSO-G48 R-PDSO-G48 R-PDSO-G48
JESD-609 code e3 e3 e3
length 12.5 mm 12.5 mm 12.5 mm
Humidity sensitivity level 1 1 1
Number of channels 2 2 2
Number of functions 1 1 1
Number of terminals 48 48 48
Maximum operating temperature 125 °C 70 °C 125 °C
Minimum operating temperature -40 °C - -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TSSOP TSSOP TSSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 250 260
Maximum seat height 1.1 mm 1.1 mm 1.1 mm
Maximum supply voltage (Vsup) 28 V 28 V 28 V
Minimum supply voltage (Vsup) 6 V 6 V 6 V
Nominal supply voltage (Vsup) 20 V 20 V 20 V
surface mount YES YES YES
technology CMOS CMOS CMOS
Temperature level AUTOMOTIVE COMMERCIAL AUTOMOTIVE
Terminal surface Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING
Terminal pitch 0.5 mm 0.5 mm 0.5 mm
Terminal location DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 NOT SPECIFIED 30
width 6.1 mm 6.1 mm 6.1 mm
Base Number Matches 1 1 1
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