BQ35100 Datasheet, PDF (1/26 Pages) Texas Instruments – Lithium Primary Battery Fuel Gauge

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bq35100
SLUSCM6A – JUNE 2016 – REVISED JULY 2016
bq35100 Lithium Primary Battery Fuel Gauge and End-Of-Service Monitor
1 Features
•1 Fuel Gauge for Single- and Multi-Cell Primary
(Non-Rechargeable) Batteries
• Supports Lithium Thionyl Chloride (LiSOCl2) and
Lithium Manganese Dioxide (LiMnO2)
• Provides Four Configurable Algorithm Options:
– Coulomb Accumulation (ACC)
– State-Of-Health (SOH)
– End-Of-Service (EOS)
• Ultra-Low Average Power Consumption
Supported Through Gauge-Enable Control
• Accurate Coulomb Counter, Voltage, and
Temperature Measurement Options
• I²C™ Host Communication, Providing Battery
Parameter and Status Access
• Configurable Host Interrupt
• Data Logging Options
• SHA-1 Authentication
3 Description
The bq35100 Battery Fuel Gauge and End-Of-
Service Monitor provides highly configurable fuel
gauging for non-rechargeable lithium primary
batteries—without requiring forced discharge of the
battery. Built so that optimization is not necessary,
the patented TI gauging algorithms support
replaceable batteries and enable accurate results
with ultra-low average power consumption through
host control via the Gauge-Enable (GE) pin.
The fuel gauging functions use voltage, current, and
temperature information to provide State-Of-Health
(SOH) and End-Of-Service (EOS) data. The bq35100
device is only required to be powered long enough to
gather data and to make calculations to support the
selected algorithm and the frequency of updates
required by the system.
The host can read the gathered data through a 400-
kHz I²C bus. An ALERT output is also available to
interrupt the host, based on a variety of configurable
options.
2 Applications
• Smart Metering
• Door Access Control
• Smoke/Gas Detection
• Building Automation
• IoT, Including Sensor Node
• Asset Tracking
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq35100
TSSOP (14)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
BAT +
I 2C CLK
Simplified Schematic
REGIN
10 k 10 k
I2C DATA
ALERT
REG 25
100k
1 VIN
2 ALERT
100
3 NC
GAUGE ENABLE
VSUPPLY _1M
0.1 µF
4 BAT
5 GE
REGIN _{6 REGIN}
REG25 _{7 REG25}
1 µF
1 µF
SDA 14
SCL 13
VEN 12
TS 11
SRN 10
SRP 9
VSS 8
REG 25
10k NTC
0.1 µF
0.1 µF
100
100
0.1 µF
0.1
75ppm
PACK–
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.