2-6. Undervoltage lockout (UVLO) function of LDO regulators

Figure 2.6 Undervoltage lockout (UVLO) function of LDO regulators

System operation might become unstable if the voltage supplied to a constituent IC or circuit drops. To ensure system stability, the undervoltage lockout (UVLO) function of an LDO regulator turns off its output when the input voltage drops below the internal threshold. UVLO has hysteresis. The output automatically turns back on when the input voltage rises back above the recovery threshold with the high-level CONTROL voltage being applied.

The following links also provide a description of undervoltage lockout:

Application note: Basics of Low-Dropout (LDO) Regulator ICs

FAQ: Why is the output of an LDO disabled when its input voltage decreases?

Chapter2 Convenient functions of LDO

2-1. Useful functions available with LDO regulators
詳細資料
2-2. Overcurrent protection operation of LDO regulators
詳細資料
2-3. Thermal shutdown (TSD) operation of LDO regulators
詳細資料
2-4. Inrush current reduction function of LDO regulators
詳細資料
2-5. Auto discharge function of LDO regulators
詳細資料

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