0
ACTIVE
Cell chemistry |
Li-Ion/Li-Polymer |
Number of series cells |
Single Cell |
Communication interface |
I2C |
Battery capacity (min) (mAh) |
300 |
Battery capacity (max) (mAh) |
8000 |
Implementation |
System |
External capacity indication |
None |
Features |
Impedance Track™ algorithm |
Operating temperature range (°C) |
-40 to 85 |
Rating |
Catalog |
DSBGA (YZG)-12-3.9375 mm² 2.25 x 1.75
or Less)
Impedance Track, NanoFree are trademarks of Texas Instruments.
I2C is a trademark of Philips Electronics.
The Texas Instruments bq27505 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system micro- controller firmware development. The bq27505 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.
The bq27505 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of- charge (%), run-time to empty (min), battery voltage (mV), temperature (°C) and state of health (%).
Battery fuel gauging with the bq27505 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 12-ball package in the dimensions of 2,43 mm × 1,96 mm with 0,5 mm lead pitch. It is ideal for space constrained applications.
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