TDA21472AUMA1 is a Infineon smart power stage.
A smart power stage combines the driver and power switches for a synchronous converter, with current and temperature reporting built in.
This ordering code is specified at 39.
It is used in point-of-load supplies and processor power, where the part has to hold its specification over the life of the equipment.
Within the family, this ordering code is the one specified for 0.25 to 5.5 V output voltage.
On the bench, the parameters that decide the design are Input Voltage 4.25 to 16 V and VCC and VDRV Supply 4.25 to 5.5 V.
Ordering this code selects the part rated Switching Frequency 200 kHz to 1.5 MHz recommended, PWM input with Current Sensing 5 mV/A on-chip MOSFET current sensing with temperature-compensated reporting.
What sets it apart is that the part is qualified for the environment its temperature range describes.
