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Feature-Rich LDO Regulators for a Wide Variety of Applications
Low Dropout
This is the main purpose of the linear LDO regulator. Although there are many ways to utilize an LDO regulator, maintaining a low dropout between the input and output voltage is the LDO regulator’s primary purpose. This is an important aspect to consider before choosing an LDO regulator as a power regulation solution.
Accuracy
As the performance and capability of technology continues to grow at a rapid rate, it is crucial that the core components of these devices meet stringent requirements and operate on a consistent and leading-edge basis. The LDO regulator’s responsibility is not only to have a low input-to-output dropout but also to ensure that the voltage is outputted with the smallest margin of error.
Power Supply Rejection Ratio (PSRR)
In the process of dropping input voltage to output voltage, various unwanted frequencies could find their way into the integrated circuit. The PSRR of a linear regulator is the measurement of how well the integrated circuit filters/rejects out extraneous noise in the input voltage signal before voltage is outputted. High PSRR typically correlates to a more consistent output accuracy.
Low Quiescent Current
Also known as Iq, quiescent current is the current that is drawn from an integrated circuit while it is in a quiescent (no-load, non-switching) state. IQ can be understood as the minimal amount of current needed to power the basic functionalities of a device. The lower the rated quiescent current of a linear regulator, the more power efficient the linear regulator is in a no-load state.