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LTC2942IDCB#TRMPBF

Description
Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH Automotive 6-Pin DFN EP T/R
CategoryBattery management   
File Size219KB,18 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC2942IDCB#TRMPBF Overview

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

LTC2942IDCB#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeFuel Gauge
Battery TypeLead-Acid|Li-FePO4|Li-Ion|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA)0.42
Minimum Operating Supply Voltage (V)2.7
Maximum Operating Supply Voltage (V)5.5
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
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
LTC2942
Battery Gas Gauge
with Temperature,
Voltage Measurement
FeaTures
n
n
n
n
n
n
n
n
n
n
n
n
DescripTion
The LTC
®
2942 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 a 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 ∆∑™ 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 features programmable high and low thresh-
olds for all three measured quantities. If a programmed
threshold is exceeded, the device communicates an alert
using either the SMBus alert protocol or by setting a flag
in the internal status register.
The LTC2942 requires only a single low value sense resis-
tor to set the measured current range.
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
High Accuracy Analog Integration
ADC Measures Battery Voltage and Temperature
Integrated Temperature Sensor
High Side Sense
1% Voltage and Charge Accuracy
±50mV Sense Voltage Range
SMBus/I
2
C Interface
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
Differential Sense Voltage
2.0
CHARGER
SENSE
+
LTC2942
AL/CC
SDA
SENSE
SCL
GND
LOAD
0.1µF
R
SENSE
100m
1.5
CHARGE ERROR (%)
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0.1
1
V
SENSE
(mV)
2942 TA01b
V
SENSE+
= 3.6V
I
2
C/SMBus
TO HOST
+
1-CELL
Li-Ion
2942 TA01a
10
100
2942fa
1

LTC2942IDCB#TRMPBF Related Products

LTC2942IDCB#TRMPBF LTC2942CDCB#PBF LTC2942CDCB#TRMPBF LTC2942CDCB#TRPBF LTC2942IDCB#PBF LTC2942IDCB#TRPBF
Description Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH Automotive 6-Pin DFN EP T/R Battery Gas Gauge with Temperature, Voltage Measurement Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH Automotive 6-Pin DFN EP T/R Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH Automotive 6-Pin DFN EP T/R Battery Gas Gauge with Temperature, Voltage Measurement Fuel Gauge Lead-Acid/Li-FePO4/Li-Ion/Li-Pol/NiCd/NiMH 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 Active - Active Active - Active
HTS 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 - 8542.39.00.01
Type Fuel Gauge - Fuel Gauge Fuel Gauge - Fuel Gauge
Battery Type Lead-Acid|Li-FePO4|Li-Ion|Li-Pol|NiCd|NiMH - Lead-Acid|Li-FePO4|Li-Ion|Li-Pol|NiCd|NiMH Lead-Acid|Li-FePO4|Li-Ion|Li-Pol|NiCd|NiMH - Lead-Acid|Li-FePO4|Li-Ion|Li-Pol|NiCd|NiMH
Maximum Supply Current (mA) 0.42 - 0.42 0.42 - 0.42
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
Maximum Operating Temperature (°C) 85 - 70 70 - 85
Supplier Temperature Grade Industrial - Commercial Commercial - Industrial
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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