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LTC1760IFW#PBF

Description
Switching Battery Charger Li-Ion/Li-Pol/NiCd/NiMH 4000mA 5.2V 48-Pin TSSOP Tube
CategoryBattery management   
File Size367KB,48 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC1760IFW#PBF Overview

Switching Battery Charger Li-Ion/Li-Pol/NiCd/NiMH 4000mA 5.2V 48-Pin TSSOP Tube

LTC1760IFW#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeSwitching Battery Charger
Battery TypeNiMH|Li-Pol|Li-Ion|NiCd
Maximum Supply Current (mA)1
Minimum Operating Supply Voltage (V)6
Maximum Operating Supply Voltage (V)28
Output Voltage (V)5.2
Output Current (mA)4000(Max)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeIndustrial
PackagingTube
Pin Count48
Standard Package NameSOP
Supplier PackageTSSOP
MountingSurface Mount
Package Height0.95(Max)
Package Length12.6(Max)
Package Width6.2(Max)
PCB changed48
Lead ShapeGull-wing
LTC1760
Dual Smart Battery
System Manager
FEATURES
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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.
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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
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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#PBF Related Products

LTC1760IFW#PBF LTC1760CFW#PBF LTC1760CFW#TRPBF LTC1760IFW#TRPBF
Description Switching Battery Charger Li-Ion/Li-Pol/NiCd/NiMH 4000mA 5.2V 48-Pin TSSOP Tube Switching Battery Charger Li-Ion/Li-Pol/NiCd/NiMH 4000mA 5.2V 48-Pin TSSOP Tube Switching Battery Charger Li-Ion/Li-Pol/NiCd/NiMH 4000mA 5.2V 48-Pin TSSOP T/R Switching Battery Charger Li-Ion/Li-Pol/NiCd/NiMH 4000mA 5.2V 48-Pin TSSOP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
Type Switching Battery Charger Switching Battery Charger Switching Battery Charger Switching Battery Charger
Battery Type NiMH|Li-Pol|Li-Ion|NiCd NiMH|NiCd|Li-Pol|Li-Ion Li-Ion|Li-Pol|NiCd|NiMH Li-Ion|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA) 1 1 1 1
Minimum Operating Supply Voltage (V) 6 6 6 6
Maximum Operating Supply Voltage (V) 28 28 28 28
Output Voltage (V) 5.2 5.2 5.2 5.2
Output Current (mA) 4000(Max) 4000(Max) 4000(Max) 4000(Max)
Maximum Operating Temperature (°C) 125 85 85 125
Supplier Temperature Grade Industrial Commercial Commercial Industrial
Packaging Tube Tube Tape and Reel Tape and Reel
Pin Count 48 48 48 48
Standard Package Name SOP SOP SOP SOP
Supplier Package TSSOP TSSOP TSSOP TSSOP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.95(Max) 0.95(Max) 0.95(Max) 0.95(Max)
Package Length 12.6(Max) 12.6(Max) 12.6(Max) 12.6(Max)
Package Width 6.2(Max) 6.2(Max) 6.2(Max) 6.2(Max)
PCB changed 48 48 48 48
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing
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