Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor
Product details
Parameters
Package | Pins | Size
Features
- Fuel gauge and battery diagnostics for flow meter applications predict end-of-service or early battery failure
- Supports lithium thionyl chloride (Li-SOCl2) and lithium manganese dioxide (Li-MnO2) chemistry batteries
- Accurate voltage, temperature, current, and coulomb counter measurements that report battery health and service life
- State-of-health (SOH) algorithm for Li-MnO2
- End-of-service (EOS algorithm for Li-SOCl2)
- Coulomb accumulation (ACC) algorithm for all battery types
- Ultra-low average power consumption to maximize battery run time
- Gauge enabled through host-controlled periodic updates
- State-of-health (SOH) ~0.06 µA
- End-of-service (EOS) ~0.35 µA
- Coulomb accumulation (ACC) diagnostic updates ~0.3 µA
- System interaction capabilities
- I2C host communication, providing battery parameter and status access
- Configurable host interrupt
- Battery information data logging options for in operation diagnostics and failure analysis
- SHA-1 authentication to help prevent counterfeit battery use
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Description
The BQ35100 Battery Fuel Gauge and End-Of-Service Monitor provides highly configurable fuel gauging for non-rechargeable (primary) lithium batteries without requiring a forced discharge of the battery. Built so that optimization is not necessary to achieve accurate gauging, the BQ35100 device uses patented TI gauging algorithms to support the option to seamlessly replace an old battery with a new one.
The BQ35100 device provides accurate results with ultra-low average power consumption where less than 2 µA can be achieved through host control via the GAUGE ENABLE (GE) pin. The device is only required to be powered long enough, at a system-determined update frequency, to gather data and to make calculations to support the selected algorithm. A typical system may need to only be updated once every 8 hours as the gauge is not required to be powered to measure all discharge activity.
The fuel gauging functions use voltage, current, and temperature measurements to provide state-of-health (SOH) data and end-of-service (EOS) warning information where the host can read the gathered data through a 400-kHz I2C bus. An ALERT output, based on a variety of configurable status and data options, is also available to interrupt the host.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | BQ35100 Lithium Primary Battery Fuel Gauge and End-Of-Service Monitor datasheet (Rev. E) | Apr. 08, 2019 |
Application note | Alternative Gauging Techniques for Flow Meters and the Benefits of the bq35100 | Nov. 15, 2018 | |
Technical articles | Facing smart meter design challenges, part 1: maximizing battery life | Aug. 16, 2018 | |
Application note | Using the BQ35100 with Li-Primary Based Applications | Jun. 20, 2018 | |
User guide | bq35100 Technical Reference Manual (Rev. C) | Mar. 26, 2018 | |
Technical articles | How do you detect battery aging in rarely discharged applications? | Jan. 10, 2017 | |
Technical articles | How to choose a multicell gauge | Dec. 16, 2016 | |
Application note | Using I2C Communications With the bq34110 bq35100 and bq34z100-G1 Series of Gas | Nov. 09, 2016 | |
User guide | bq35100EVM-795 Evaluation Module User’s Guide | Jul. 12, 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Complete evaluation system for the bq35100 gas gauge with EOS monitoring
- Populated circuit module for quick setup
- Complete evaluation system for the bq35100 battery management IC
Software development
Features
- Real-time Gauge Dashboard for monitoring basic registers
- Full register access and logging
- Full data memory access and logging
- Product configuration and monitoring tools
- Import and export of product configurations
- Calibration and test automation
- Export of FS files for the target production environment
Reference designs
Design files
Design files
-
download TIDA-01236 BOM.pdf (67KB) -
download TIDA-01236 Assembly Drawing.pdf (198KB) -
download TIDA-01236 PCB.pdf (1267KB) -
download TIDA-01236 CAD Files.zip (704KB) -
download TIDA-01236 Gerber.zip (565KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
TSSOP (PW) | 14 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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Support & training
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