System-side Impedance Track™; fuel gauge LiMn2O4 battery
Product details
Parameters
Package | Pins | Size
Features
- Single-Series Cell Li-Ion Battery Fuel Gauge
- Resides on System Board
- Supports Embedded or Removable Batteries
- Powered Directly From Battery With Integrated
LDO - Low-Value Integrated Sense Resistor
(10 mΩ, Typical)
- Easy-to-Configure Fuel Gauging Based on
Patented Impedance Track Technology- Reports Remaining Capacity and State of
Charge (SOC) With Smoothing Filter - Automatically Adjusts for Battery Aging, Self-
Discharge, Temperature, and Rate Changes - Battery State-of-Health (Aging) Estimation
- Reports Remaining Capacity and State of
- Microcontroller Peripheral Supports:
- 400-kHz I2C Serial Interface
- Configurable SOC Interrupt or
Battery Low Digital Output Warning - Internal Temperature Sensor or
Host-Reported Temperature
Description
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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | bq27425-G2 System-Side Impedance Track Fuel Gauge With Integrated Sense Resistor datasheet (Rev. B) | Jun. 30, 2015 |
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 Gas Gauge Circuit Design | Feb. 22, 2008 | |
Application note | Single Cell Impedance Track Printed-Circuit Board Layout | Feb. 22, 2008 | |
Application note | Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm | Jan. 31, 2008 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The BQ27425EVM-G2B evaluation module is a complete evaluation system for the bq27425-G2B. The EVM includes one bq27425-G2B circuit module with an integrated current-sense resistor. A separated orderable EV2400 PC interface board for gas gauge interface along with a PC USB cable, and (...)
Features
- Single series cell Li-Ion battery fuel gauge
- Resides on system board
- Supports embedded or removable batteries
- Powered directly from battery with integrated LDO
- Low-value integrated sense resistor (10 mΩ Typical)
- Easy to configure fuel gauging based on patented Impedance Track technology
- Reports Remaining (...)
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
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.
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