The Texas Instruments bq27425-G2 fuel gauge is an easy-to-configure microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal user configuration and system microcontroller firmware development.
The fuel gauge 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-G2 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The 15-pin, 2.69 mm × 1.75 mm, 0.5-mm pitch chip scale package (DSBGA) is ideal for space-constrained applications.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | bq27425-G2 System-Side Impedance Track Fuel Gauge With Integrated Sense Resistor datasheet (Rev. B) | PDF | HTML | Jun 30, 2015 |
| Application note | Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm (Rev. A) | PDF | HTML | May 16, 2014 | |
| 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 | Going to Production With the bq27425 | Apr 23, 2012 | ||
| Application note | Single Cell Impedance Track Printed-Circuit Board Layout | Feb 22, 2008 | ||
| Application note | Single Cell Gas Gauge Circuit Design | Feb 22, 2008 |
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YZF) | 15 | Ultra Librarian |
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