LTC2941/LTC2942/LTC2943/LTC2944 Battery Fuel Gauge Devices

Analog Devices’ battery monitoring and charging for low power battery applications such as smart phones, cameras, and GPS

Image of Linear Tech's LTC2941/LTC2942/LTC2943/LTC2944 Battery Fuel Gauge DevicesLinear Technology/Analog Devices’ LTC2941, LTC2942, LTC2943, and LTC2944 are battery fuel gauge devices. These devices measure battery charge state, battery voltage, and chip temperature in handheld PC and portable product applications. Their operating range is perfectly suited for single-cell Li-Ion or multi-chemistry 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 temperatures are measured with an internal 14-bit No Latency ΔΣ™ ADC. The three measured quantities (charge, voltage, and temperature) are stored in internal registers accessible via the onboard SMBus/I2C interface. The LTC2941 and LTC2942 feature programmable high and low thresholds for all three measured quantities, whereas the LTC2943 and LTC2944 feature them for all four 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 LTC2941, LTC2942, LTC2943, and LTC2944 require only a single low value sense resistor to set the measured current range. They have been designed for low power battery applications such as smart phones, cameras, and GPS.

Image of Linear Tech's LTC2941/LTC2942/LTC2943/LTC2944 Typical Applications Image of Linear Tech's LTC2941/LTC2942/LTC2943/LTC2944 Typical Applications
Features
  • Measures accumulated battery charge and discharge
  • 3.6 V to 20 V operating range for multiple cells
  • Integrated 50 mΩ high side sense resistor
  • ±1 A current sense range
  • 14-bit ADC measures voltage, current, and temperature
  • 1% voltage, current, and charge accuracy
  • Temperature operating range: 0°C to -70°C (TA), -40°C to +85°C (TA)
  • Package/case: 6-DFN, 8-DFN, and 8-MSOP
Applications
  • Cellphones/smartphones
  • Cameras
  • MP3 players
  • GPS
  • Low power handheld products

PMIC - Battery Management

ImageManufacturer Part NumberDescriptionBattery ChemistryOperating TemperatureAvailable QuantityView Details
IC BATTERY MONITOR LI-ION 6DFNLTC2941CDCB#TRMPBFIC BATTERY MONITOR LI-ION 6DFNLithium-Ion0°C ~ 70°C (TA)78 - ImmediateView Details
IC BATTERY MONITOR LI-ION 6DFNLTC2941CDCB-1#TRMPBFIC BATTERY MONITOR LI-ION 6DFNLithium-Ion0°C ~ 70°C (TA)2937 - ImmediateView Details
IC BATTERY MONITOR LI-ION 8MSOPLTC2941CMS8E#PBFIC BATTERY MONITOR LI-ION 8MSOPLithium-Ion0°C ~ 70°C (TA)0View Details
IC BATTERY MONITOR LI-ION 6DFNLTC2941IDCB#TRMPBFIC BATTERY MONITOR LI-ION 6DFNLithium-Ion-40°C ~ 85°C (TA)6417 - Immediate
2000 - Factory Stock
View Details
IC BATTERY MONITOR LI-ION 6DFNLTC2941IDCB-1#TRMPBFIC BATTERY MONITOR LI-ION 6DFNLithium-Ion-40°C ~ 85°C (TA)36 - ImmediateView Details

Evaluation and Demonstration Boards

ImageManufacturer Part NumberDescriptionTypeEmbeddedUtilized IC / PartAvailable QuantityView Details
BOARD EVAL LTC2941DC1496B-ABOARD EVAL LTC2941Power ManagementNoLTC29413 - Immediate
10 - Factory Stock
View Details
BOARD EVAL FOR LTC2941-1DC1496B-CBOARD EVAL FOR LTC2941-1Power ManagementNoLTC2941-11 - ImmediateView Details
DEMO BOARD LTC2942DC1496C-BDEMO BOARD LTC2942Power ManagementNoLTC29423 - Immediate
366 - Factory Stock
View Details
EVAL BOARD FOR LTC2943DC1812A-AEVAL BOARD FOR LTC2943Power ManagementNoLTC294321 - Immediate
62 - Factory Stock
View Details
DEMO BOARD FOR LTC2944DC1812A-BDEMO BOARD FOR LTC2944Power ManagementNoLTC294419 - Immediate
246 - Factory Stock
View Details
EVAL BOARD FOR LTC2943-1DC1812A-CEVAL BOARD FOR LTC2943-1Power ManagementNoLTC2943-12 - Immediate
283 - Factory Stock
View Details
Published: 2018-02-08