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LTC2942CDCB-1#TRPBF

Description
Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH 1000mA Automotive 6-Pin DFN EP T/R
CategoryBattery management   
File Size219KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC2942CDCB-1#TRPBF Overview

Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH 1000mA Automotive 6-Pin DFN EP T/R

LTC2942CDCB-1#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusLTB
HTS8542.39.00.01
TypeFuel Gauge
Battery TypeLead-Acid|Li-Ion|Li-FePO4|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA)0.45
Minimum Operating Supply Voltage (V)2.7
Maximum Operating Supply Voltage (V)5.5
Output Current (mA)1000
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
Supplier Temperature GradeCommercial
PackagingTape and Reel
Supplier PackageDFN EP
Pin Count6
Standard Package NameDFN
MountingSurface Mount
Package Height0.75(Max)
Package Length2
Package Width3
PCB changed6
Lead ShapeNo Lead
FeaTures
n
n
n
n
n
n
n
n
n
n
n
n
LTC2942-1
1A Battery Gas Gauge with
Internal Sense Resistor and
Temperature/Voltage
Measurement
DescripTion
The LTC
®
2942-1 measures battery charge state, battery
voltage and chip temperature in handheld PC and portable
product applications. Its operating range is perfectly
suited for single cell Li-Ion batteries. A precision coulomb
counter integrates current through an internal sense
resistor between the battery’s positive terminal and the
load or charger. Battery voltage and on-chip temperature
are measured with an internal 14-bit No Latency
∆Σ™
ADC. The three measured quantities (charge, voltage and
temperature) are stored in internal registers accessible via
the onboard SMBus/I
2
C interface.
The LTC2942-1 features programmable high and low
thresholds for all three measured quantities. If a pro-
grammed threshold is exceeded, the device communicates
an alert using either the SMBus alert protocol or by setting
a flag in the internal status register.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
No Latency
∆Σ,
ThinSOT and Bat-Track are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Indicates Accumulated Battery Charge and
Discharge
SMBus/I
2
C Interface
Integrated 50mΩ High Side Sense Resistor
±1A Sense Current Range
High Accuracy Analog Integration
ADC Measures Battery Voltage and Temperature
Integrated Temperature Sensor
1% Voltage and Charge Accuracy
Configurable Alert Output/Charge Complete Input
2.7V to 5.5V Operating Range
Quiescent Current Less than 100µA
Small 6-Pin 2mm
×
3mm DFN package
applicaTions
n
n
n
n
n
Low Power Handheld Products
Cellular Phones
MP3 Players
Cameras
GPS
Typical applicaTion
Total Charge Error vs Sense Current
1.00
CHARGER
SENSE
+
LTC2942-1
I
2
C/SMBus
TO HOST
AL/CC
SDA
SCL
GND
SENSE
V
SENSE+
= 3.6V
LOAD
0.1µF
CHARGE ERROR (%)
0.75
0.50
0.25
0
+
1-CELL
Li-Ion
29421 TA01a
–0.25
–0.50
–0.75
–1.00
1
10
100
|I
SENSE
| (mA)
1000
29421 TA01b
29421f


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Description Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH 1000mA Automotive 6-Pin DFN EP T/R 1A Battery Gas Gauge with Internal Sense Resistor and Temperature/Voltage Measurement Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH 1000mA Automotive 6-Pin DFN EP T/R 1A Battery Gas Gauge with Internal Sense Resistor and Temperature/Voltage Measurement Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH 1000mA Automotive 6-Pin DFN EP T/R Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH 1000mA Automotive 6-Pin DFN EP T/R
EU restricts the use of certain hazardous substances Compliant - Compliant - Compliant Compliant
ECCN (US) EAR99 - EAR99 - EAR99 EAR99
Part Status LTB - LTB - LTB LTB
Type Fuel Gauge - Fuel Gauge - Fuel Gauge Fuel Gauge
Battery Type Lead-Acid|Li-Ion|Li-FePO4|Li-Pol|NiCd|NiMH - Lead-Acid|Li-FePO4|Li-Ion|Li-Pol|NiCd|NiMH - NiMH|NiCd|Li-Pol|Li-Ion|Li-FePO4|Lead-Acid Lead-Acid|Li-FePO4|Li-Ion|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA) 0.45 - 0.45 - 0.45 0.45
Minimum Operating Supply Voltage (V) 2.7 - 2.7 - 2.7 2.7
Maximum Operating Supply Voltage (V) 5.5 - 5.5 - 5.5 5.5
Output Current (mA) 1000 - 1000 - 1000 1000
Maximum Operating Temperature (°C) 70 - 70 - 85 85
Supplier Temperature Grade Commercial - Commercial - Industrial Industrial
Packaging Tape and Reel - Tape and Reel - Tape and Reel Tape and Reel
Supplier Package DFN EP - DFN EP - DFN EP DFN EP
Pin Count 6 - 6 - 6 6
Standard Package Name DFN - DFN - DFN DFN
Mounting Surface Mount - Surface Mount - Surface Mount Surface Mount
Package Height 0.75(Max) - 0.75(Max) - 0.75(Max) 0.75(Max)
Package Length 2 - 2 - 2 2
Package Width 3 - 3 - 3 3
PCB changed 6 - 6 - 6 6
Lead Shape No Lead - No Lead - No Lead No Lead
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