JAJSGA2F September 2018 – June 2021 TPS2663
When the device is started with short-circuit on the output, the current begins to limit at I(OL). Due to high power dissipation of VIN x I(OL) within the device the junction temperature increases. Subsequently, the thermal regulation control loop limits the load current to regulate the junction temperature at T(J_REG) , 145°C (typical) for a duration of t(Treg_timeout), 2.5 sec (typical). Subsequent operation of the device depends on the MODE configuration (Auto-Retry or latch OFF) setting as per the Table 9-1. FLT gets asserted after t(Treg_timeout) and remains asserted till the output short-circuit is removed. Figure 9-15 illustrates the behavior of the device in this condition.
|VIN = 24V||RILIM = 3 kΩ|