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What is the quiescent current of an LDO?

Quiescent current (IB) is the current consumed by the internal control circuitry of an LDO when it is active. Quiescent current is defined as the current flowing from the GND terminal. The datasheets show a value under a zero-load condition (IOUT=0 A) at the specified input voltage (VIN), bias voltage (VBIAS), and temperature. LDOs with low quiescent current are suitable for battery-operated mobile applications.

Figure 1 Quiescent current
Figure 1 Quiescent current

Figure 2 Example of an IB-VIN curve
Figure 2 Example of an IB-VIN curve

Also see the following documents and web page for a description of quiescent current:
For other LDO regulators, visit the main web page of LDO regulators at:
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