The BQ25173 is an
integrated 800-mA linear charger for 1- to 4-cell supercapacitors targeted at
space-limited applications. The device has a single power output that charges
the supercapacitor. The system load can be placed in parallel with the
supercapacitor; the charge current is shared between the system and
supercapacitor.
During charging, an
internal control loop monitors the IC junction temperature and reduces the charge
current if the internal temperature threshold, TREG, is exceeded. This
feature allows for fast charging of a fully discharged supercapacitor.
The charger power
stage and charge current sense functions are fully integrated. The charger function
has high accuracy current and voltage regulation loops, charge status display, and
charge function control. The charge voltage and fast-charge current are programmable
through external resistors.
The BQ25173 is an
integrated 800-mA linear charger for 1- to 4-cell supercapacitors targeted at
space-limited applications. The device has a single power output that charges
the supercapacitor. The system load can be placed in parallel with the
supercapacitor; the charge current is shared between the system and
supercapacitor.
During charging, an
internal control loop monitors the IC junction temperature and reduces the charge
current if the internal temperature threshold, TREG, is exceeded. This
feature allows for fast charging of a fully discharged supercapacitor.
The charger power
stage and charge current sense functions are fully integrated. The charger function
has high accuracy current and voltage regulation loops, charge status display, and
charge function control. The charge voltage and fast-charge current are programmable
through external resistors.