MCP1726 Datasheet, PDF (17/30 Pages) Microchip Technology – 1A, Low Voltage, Low Quiescent Current LDO Regulator

4.9 Overtemperature Protection
The MCP1726 LDO has temperature-sensing circuitry
to prevent the junction temperature from exceeding
approximately 150°C. If the LDO junction temperature
does reach 150°C, the LDO output will be turned off
until the junction temperature cools to approximately
140°C, at which point the LDO output will automatically
resume normal operation. If the internal power
dissipation continues to be excessive, the device will
again shut off. The junction temperature of the die is a
function of power dissipation, ambient temperature
and package thermal resistance. See Section 5.0
“Application Circuits/Issues” for more information
on LDO power dissipation and junction temperature.
MCP1726
© 2005 Microchip Technology Inc.
DS21936B-page 17