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LTC1960CUHF#TRPBF

Description
Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 38-Pin QFN EP T/R
CategoryBattery management   
File Size319KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC1960CUHF#TRPBF Overview

Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 38-Pin QFN EP T/R

LTC1960CUHF#TRPBF 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 TypeLead-Acid|Li-Ion|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA)2
Minimum Operating Supply Voltage (V)6
Maximum Operating Supply Voltage (V)28
Output Current (mA)4000(Max)
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
Supplier Temperature GradeCommercial
PackagingTape and Reel
Pin Count38
Standard Package NameQFN
Supplier PackageQFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length7
Package Width5
PCB changed38
Lead ShapeNo Lead
FEATURES
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LTC1960
Dual Battery Charger/
Selector with SPI Interface
DESCRIPTION
The
LTC
®
1960
is a highly integrated battery charger and
selector intended for portable products using dual smart
batteries. A serial SPI interface allows an external micro-
controller to control and monitor status of both batteries.
A proprietary PowerPath architecture supports simulta-
neous charging or discharging of both batteries. Typical
battery run times are extended by 10%, while charging
times are reduced by up to 50%. The LTC1960 automati-
cally switches between power sources in less than 10µs
to prevent power interruption upon battery or wall adapter
removal.
The synchronous buck battery charger delivers 95% effi-
ciency with only 0.5V dropout voltage, and prevents audible
noise in all operating modes. Patented input current limit-
ing with 5% accuracy charges batteries in the shortest
possible time without overloading the wall adapter.
The LTC1960’s 5mm × 7mm 38-pin QFN and 36-pin nar-
row SSOP packages allow implementation of a complete
SBS-compliant dual battery system while consuming
minimum PCB area.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. patents, including 5481178, 5723970, 6304066, 6580258.
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Complete Dual-Battery Charger/Selector System
Serial SPI Interface Allows External µC Control and
Monitoring
Simultaneous Dual-Battery Discharge Extends Run
Time by Typically 10%
Simultaneous Dual-Battery Charging Reduces
Charging Time by Up to 50%
Automatic PowerPath™ Switching in <10µs
Prevents Power Interruption
Circuit Breaker Protects Against Overcurrent Faults
5% Accurate Adapter Current Limit Maximizes
Charging Rate
95% Efficient Synchronous Buck Charger
Charger Has Low 0.5V Dropout Voltage
No Audible Noise Generation, Even with Ceramic
Capacitors
11-Bit VDAC Delivers 0.8% Voltage Accuracy
10-Bit IDAC Delivers 5% Current Accuracy
V
IN
Up to 32V; V
BATT
Up to 28V
Available in 5mm × 7mm 38-Pin QFN and 36-Pin
Narrow SSOP Packages
APPLICATIONS
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Portable Computers
Portable Instruments
TYPICAL APPLICATION
LTC1960 Dual Battery/Selector System Architecture
BATTERY CURRENT (mA)
DC
IN
3500
3000
2500
2000
1500
1000
500
0
3500
3000
2500
2000
1500
1000
500
0
Dual vs Sequential Charging
BAT1
CURRENT
BAT2
CURRENT
SEQUENTIAL
SYSTEM POWER
BAT1
CURRENT
BAT2
CURRENT
DUAL
100
MINUTES
LTC1960
4
BAT2
BAT1
SPI
MICROCONTROLLER
SMBus
0
50
100
150
200
TIME (MINUTES)
250
300
1960 TA01
BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020)
REQUESTED CURRENT = 3A
REQUESTED VOLTAGE = 12.3V
MAX CHARGER CURRENT = 4.1A
1960 TA01b
Rev. C
Document Feedback
For more information
www.analog.com
1

LTC1960CUHF#TRPBF Related Products

LTC1960CUHF#TRPBF LTC1960CG#PBF LTC1960CG#TR LTC1960CG#TRPBF LTC1960CG LTC1960CUHF#PBF
Description Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 38-Pin QFN EP T/R Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 36-Pin SSOP Tube Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 36-Pin SSOP T/R Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 36-Pin SSOP T/R Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 36-Pin SSOP Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 4000mA 38-Pin QFN EP Tube
EU restricts the use of certain hazardous substances Compliant Compliant Not Compliant Compliant Not Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Unconfirmed Active Unconfirmed Active
HTS 8542.39.00.01 8542.39.00.01 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 Switching Battery Charger Switching Battery Charger
Battery Type Lead-Acid|Li-Ion|Li-Pol|NiCd|NiMH Lead-Acid|Li-Ion|Li-Pol|NiCd|NiMH NiMH|NiCd|Li-Pol|Li-Ion|Lead-Acid Lead-Acid|Li-Ion|Li-Pol|NiCd|NiMH Li-Ion|Li-Pol|NiCd|NiMH|Lead-Acid Lead-Acid|Li-Ion|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA) 2 2 2 2 2 2
Minimum Operating Supply Voltage (V) 6 6 6 6 6 6
Maximum Operating Supply Voltage (V) 28 28 28 28 28 28
Output Current (mA) 4000(Max) 4000(Max) 4000(Max) 4000(Max) 4000(Max) 4000(Max)
Maximum Operating Temperature (°C) 70 70 70 70 70 70
Supplier Temperature Grade Commercial Commercial Commercial Commercial Commercial Commercial
Pin Count 38 36 36 36 36 38
Standard Package Name QFN SOP SOP SOP SOP QFN
Supplier Package QFN EP SSOP SSOP SSOP SSOP QFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 2(Max) - 0.05(Min) 2(Max) - 0.05(Min) 2(Max) - 0.05(Min) 2(Max) - 0.05(Min) 0.75(Max)
Package Length 7 13.1(Max) 13.1(Max) 13.1(Max) 13.1(Max) 7
Package Width 5 5.6(Max) 5.6(Max) 5.6(Max) 5.6(Max) 5
PCB changed 38 36 36 36 36 38
Lead Shape No Lead Gull-wing Gull-wing Gull-wing Gull-wing No Lead
Packaging Tape and Reel Tube Tape and Reel Tape and Reel - Tube
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