The LP38692 has an Enable pin (EN) which allows an external control signal to turn the regulator output On and Off. The Enable On/Off threshold has no hysteresis. The voltage signal must rise and fall cleanly, and promptly, through the ON and OFF voltage thresholds. The EN pin voltage must be higher than the VEN(MIN) threshold to ensure that the device is fully enabled under all operating conditions. The EN pin voltage must be lower than the VEN(MAX) threshold to ensure that the device is fully disabled. The Enable pin has no internal pull-up or pull-down to establish a default condition and, as a result, this pin must be terminated either actively or passively. If the Enable pin is driven from a source that actively pulls high and low, the drive voltage should not be allowed to go below ground potential or higher than VIN. If the application does not require the Enable function, the pin should be connected directly to the IN pin.

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