In this example, the nominal load current is
100 mA, so the current limit can be set to 500 mA without disrupting normal
operation. Use
Equation 2 to calculate the resistor needed on the ILIM pin.
Equation 2. ILIM = 1.18 ×
(RILIM)–1.072
where
- ILIM =
Typical current limit setting
- RILIM =
Resistor on the ILIM pin
Based on Equation 2, a 2.21-kΩ resistor must be used on the ILIM pin to set a typical
current limit of 500 mA.