SNVAA88 December 2023 LM51581-Q1 , TPS1H000-Q1 , TPS92642-Q1
The LED driver uses a buck converter topology and provides a constant current to the connected IR LED string during the on-time period. The majority of the energy for the LED current pulse is drawn from the buffer capacitor.
The design uses the TPS92642-Q1 synchronous buck IR LED driver with it's diagnostic features including eye safety protection, high output current capability of 5 A and high efficiency.