A disable module may be coupled to an analog circuit of an electronic circuit. The disable module may detect an input voltage that is supplied to the analog circuit, and may disable (such as by powering off) the analog circuit if the input voltage is below a reference value. The reference value may be set at a voltage level at or below a maximum voltage that may be present across a transistor in the analog circuit. Accordingly, the analog circuit may be disabled without damage to the transistors of the analog circuit. The disable module may detect whether the input voltage is below the reference value level by comparing the input voltage to a reference voltage. The electronic circuit may include a voltage regulator, and the voltage regulator may include the analog circuit.

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