ZHCSKA2A September 2019 – February 2020 LMR36520
PRODUCTION DATA.
The LMR36520 incorporates an undervoltage lockout feature on the output of the internal LDO at the VCC pin. When VCC reaches about 3.7 V, the device is ready to receive an EN signal and start up. When VCC falls below about 3 V, the device shuts down, regardless of EN status. Because the LDO is in dropout during these transitions, the previously mentioned values roughly represent the input voltage levels during the transitions.
Thermal shutdown is provided to protect the regulator from excessive junction temperature. When the junction temperature reaches about 170°C, the device shuts down; re-start occurs when the temperature falls to about 158°C. For safe operation, the device must not be allowed to go into a short circuit condition while in thermal shutdown.