ZHCSFE3B March 2016 – November 2017 LM5161
PRODUCTION DATA.
The LM5161 must be operated such that the junction temperature does not exceed 150°C during normal operation. An internal thermal shutdown circuit is provided to protect the LM5161 in the event of a higher than normal junction temperature. When activated, typically at 175°C, the controller is forced into a low-power reset state, disabling the high side buck switch and the VCC regulator. This feature prevents catastrophic failures due to device overheating. When the junction temperature falls below 155 °C (typical hysteresis = 20°C), the VCC regulator is enabled, and operation resumes.