7.4 Device Functional Modes

7.4.1 Enable (EN)

The LP5912-EP EN pin is internally held low by a 3-MΩ resistor to GND. The EN pin voltage must be higher

than the VEN(ON) threshold to ensure that the device is fully enabled under all operating conditions. When the

EN pin voltage is lower than the VEN(OFF) threshold, the output stage is disabled, the PG pin goes low, and the

output automatic discharge circuit is activated. Any charge on the OUT pin is discharged to ground through the

internal 100-Ω (typical) output auto discharge pulldown resistance.

7.4.2 Minimum Operating Input Voltage (VIN)

The LP5912-EP does not include a dedicated undervoltage lockout (UVLO) circuit. The device internal circuit is

not fully functional until VIN is at least 1.6 V. The output voltage is not regulated until VIN has reached at least the

greater of 1.6 V or (VOUT + VDO).

LP5912-EP

SNVSC57 – SEPTEMBER 2022

www.ti.com

18

Submit Document Feedback

Copyright © 2022 Texas Instruments Incorporated

Product Folder Links: LP5912-EP