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LM5025A

SNVS293F – DECEMBER 2004 – REVISED AUGUST 2016

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10.2 Layout Example

Figure 23. LM5025A Layout Recommendation

10.3 Thermal Protection

Internal thermal shutdown circuitry is provided to protect the integrated circuit in the event the maximum junction

temperature is exceeded. When activated, typically at 165°C, the controller is forced into a low-power standby

state with the output drivers and the bias regulator disabled. The device restarts after the thermal hysteresis

(typically 25°C). During a restart after thermal shutdown, the soft-start capacitor is fully discharged and then

charged in the low current mode (1 µA) similar to a second level current limit event. The thermal protection

feature is provided to prevent catastrophic failures from accidental device overheating.