Datasheet

LM5009A
SNVS608G –JUNE 2009–REVISED FEBRUARY 2013 www.ti.com
Thermal Protection
The LM5009A should be operated so the junction temperature does not exceed 125°C during normal operation.
An internal Thermal Shutdown circuit is provided to shutdown the LM5009A in the event of a higher than normal
junction temperature. When activated, typically at 165°C, the controller is forced into a low power reset state by
disabling the buck switch. This feature prevents catastrophic failures from accidental device overheating. When
the junction temperature reduces below 140°C (typical hysteresis = 25°C) normal operation is resumed.
10 Submit Documentation Feedback Copyright © 2009–2013, Texas Instruments Incorporated
Product Folder Links: LM5009A