System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery
Product details
Parameters
Package | Pins | Size
Features
- Battery Fuel Gauge for 1-Series LiCoO2 battery Applications
- Easy to Configure Battery Fuel Gauging Based on Patented Impedance Track Technology
- Models Battery Discharge Curve for Accurate State-of-Charge Report
- Automatically Adjusts for Battery Aging, Battery Self-Discharge, and
Temperature/Rate Inefficiencies - Low-Value Integrated Sense Resistor
(10 mΩ typical)
- Resides on System Main Board
- Works with Embedded or Removable Battery Packs
- Integrated LDO allows devices to be powered directly from battery pack
- Microcontroller Peripheral Provides:
- Accurate Battery Fuel Gauging
- Internal Temperature Sensor for Battery Temperature Reporting
- Configurable Level of State-of-Charge (SOC) Interrupts
- I2C for Connection to System Microcontroller Port
- Small 15-pin 2,69 × 1,75 mm, 0.5 mm pitch CSP package
Description
The Texas Instruments bq27425 system-side LiCoO2 battery fuel gauge is an easy to configure microcontroller peripheral that provides fuel gauging for single-cell LiCoO2 battery packs. The device requires minimal user configurations and system microcontroller firmware development for accurate fuel gauging.
The bq27425 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).
Battery fuel gauging with the bq27425 requires only PACK+ (P+), PACK– (P–), for a removable battery pack or embedded battery circuit. The 15-pin 2,69 × 1,75 mm, 0.5 mm pitch CSP package is ideal for space constrained applications.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection . datasheet | Mar. 04, 2011 |
User guide | bq27425 EVM: Single-Cell Impedance Track Technology (Rev. A) | Jan. 18, 2013 | |
Application note | bq27425-G1 to bq27425-Gx Change List | Oct. 19, 2012 | |
Application note | Configuring the bq27425G1-v2.02 | Aug. 28, 2012 | |
Application note | Going to Production With the bq27425 | Apr. 23, 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Software development
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
(...)
Design tools & simulation
Reference designs
Design files
-
download TIDA-00292 BOM.pdf (120KB) -
download TIDA-00292 PCB Layout.zip (5840KB) -
download TIDA-00292 Gerber.zip (1520KB)
Design files
-
download TIDA-00011 BOM.pdf (123KB) -
download TIDA-00011 Gerber.zip (3708KB)
Design files
-
download TIDA-00010 BOM.pdf (123KB) -
download TIDA-00010 Gerber.zip (1353KB)
Design files
-
download TIDA-00051 BOM.pdf (42KB) -
download TIDA-00051 PCB.pdf (273KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
DSBGA (YZF) | 15 | 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
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.