JAJSIO5B July 2019 – February 2020 LMR36506-Q1
ADVANCE INFORMATION for pre-production products; subject to change without notice.
The internal LDO has a lower EN threshold than the output of the regulator. When the EN pin voltage is above the VEN-WAKE threshold but below the precision enable rising threshold for the output voltage, the internal LDO clamps the VCC voltage at 5.5 V typically. The precision enable circuitry is ON once VCC is above its VCC-UVLO. The internal power MOSFET of the SW node remains off unless the voltage on the EN terminal goes above its precision enable threshold. The LMR36506-Q1 also employs undervoltage lockout protection. If the VCC voltage is below its UVLO level, the output of the regulator is turned off.