The Texas Instruments bq27531-G1 system-side Li-
Ion Battery Management Unit is a microcontroller
peripheral that provides Impedance Track fuel
gauging and charging control for single-cell Li-Ion
battery packs. The device requires little system
microcontroller firmware development. Together with
the bq2419x Single-Cell Switched-Mode Charger, the
bq27531-G1 manages an embedded battery
(nonremovable) or a removable battery pack.
The bq27531-G1 uses the patented Impedance Track
algorithm for fuel gauging, and provides information
such as remaining battery capacity (mAh), state-ofcharge
(%), run time to empty (minimum), battery
voltage (mV), temperature (°C), and state of health
(%).
Battery fuel gauging with the bq27531-G1 requires
only PACK+ (P+), PACK– (P–), and Thermistor (T)
connections to a removable battery pack or
embedded battery circuit. The CSP option is a 15-pin
package in the dimensions of 2.61 mm × 1.96 mm
with a 0.5-mm lead pitch, which is ideal for spaceconstrained
applications.
The Texas Instruments bq27531-G1 system-side Li-
Ion Battery Management Unit is a microcontroller
peripheral that provides Impedance Track fuel
gauging and charging control for single-cell Li-Ion
battery packs. The device requires little system
microcontroller firmware development. Together with
the bq2419x Single-Cell Switched-Mode Charger, the
bq27531-G1 manages an embedded battery
(nonremovable) or a removable battery pack.
The bq27531-G1 uses the patented Impedance Track
algorithm for fuel gauging, and provides information
such as remaining battery capacity (mAh), state-ofcharge
(%), run time to empty (minimum), battery
voltage (mV), temperature (°C), and state of health
(%).
Battery fuel gauging with the bq27531-G1 requires
only PACK+ (P+), PACK– (P–), and Thermistor (T)
connections to a removable battery pack or
embedded battery circuit. The CSP option is a 15-pin
package in the dimensions of 2.61 mm × 1.96 mm
with a 0.5-mm lead pitch, which is ideal for spaceconstrained
applications.