4.5 V fixed output, ±0.05% — precision reference for ADC/DAC chains
Noise from 0.1 Hz to 10 Hz is 3 µVp-p, low enough that it won't limit a 16-bit ADC's noise floor in most precision measurement chains.
Input headroom and load drive
Input voltage range is 4.7 V to 18 V. Output current is rated at 10 mA. Supply current drawn by the reference itself is 1.2 mA.
Package and rework consideration
The small body means low thermal mass — it reflows quickly under a hot-air station, and the exposed die pad (if present on the VSSOP variant) helps with thermal coupling to the board.