BQ25172DSGR
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Texas Instruments bq25172 NiMH Stand-Alone Linear Charger is an integrated 800mA linear charger for 1-cell to 6-cell NiMH batteries. These devices are targeted at industrial and medical applications. A single power output is included that charges the battery. The system load may be placed in parallel with the battery. This option can only be done if the average system load does not prevent the battery from being charged fully within the safety timer duration. The charge current is shared between the system and battery when the system load is parallel with the battery.
The Texas Instruments bq25172 charger power stage and charge current sense functions are fully integrated. The charger has a high accuracy current, charge status display, and timer-based charge termination. The series cell count, charge current, and charge timer are programmable through external resistors. Intermittent charging allows a NiMH battery to automatically recharge for a reduced timer duration once its voltage falls below the recharge threshold.