While a bypass capacitor is not required on the input voltage line, TI recommends reducing noise on the input which could affect the output. A 0.1-µF ceramic capacitor or larger is recommended.

In order to not exceed the maximum cathode current, be sure that the supply current is limited. For applications shunting high currents, pay attention to the cathode and anode trace lengths, adjusting the width of the traces to have proper current density.