SLVS736C February 2008 – October 2023 TPS2550 , TPS2551
PRODUCTION DATA
Some applications require that current-limiting cannot occur below a certain threshold. For this example, assume that 1 A must be delivered to the load so that the minimum desired current-limit threshold is 1000 mA. Use the IOS equations and Figure 9-1 to select RILIM.
Select the closest 1% resistor less than the calculated value: RILIM = 16 kΩ. This selection sets the minimum current-limit threshold at 1 A . Use the IOC equations, Figure 9-1, and the previously calculated value for RILIM to calculate the maximum resulting current-limit threshold.
The resulting maximum current-limit threshold is 1.69 A with a 16 kΩ resistor.