MC79M08CTG

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MC79M08CTG is an integrated low-dropout (LDO) linear regulator designed to deliver a more precise output voltage than standard regulators. It is one of the integrated Voltage Regulators, specifically classified under Linear. This guide covers the voltage regulator device’s basic functions and its application field, outlining in detail its features, typical application circuit, and working principle.

The MC79M08CTG device is a monolithic 400 mA regulator with fast transient response, low dropout voltage, and low quiescent current. It is available in a space-saving 2.0 mm x 2.5 mm, small 8-pin Micro-SOM package. The device also provides a wide output voltage range from 0.7V up to 5.0V, in 0.05V increments and up to 6.0V in 0.1V increments.

The MC79M08CTG has an input voltage range of 2.2V to 6.0V, an operating temperature range of 0°C to 70°C, and a storage temperature range of -55°C to 150°C. It consumes a quiescent current of 7.5mA, and has an error tolerance of ±2.0%. It also has an on-board power-on reset output which can be used for a wide range of applications.

The device is suitable for applications such as mobile phones, PDAs, PCs, digital televisions, car navigation systems and game consoles, as well as automotive and industrial applications. It can be used both in distributed power architecture applications, as well as point of load power supply architectures.

The MC79M08CTG has an integrated single adjustable positive regulator that delivers up to 400 mA of load current. Ithas a low dropout voltage of only 0.13V at 200mA. It also has a fast transient response, which help reduce output voltage deviation and supports faster load current axis turn-on.

The device’s working principle is based on the integration of two separate stages, one is the control stage, the second is the pass transistor. A feedback voltage is sent from the output stage to the control stage, which is then compared with a reference voltage to ensure that the output voltage remains stable. If the output voltage deviates from the reference voltage, the control stage takes corrective measures to adjust the output voltage, essentially providing voltage regulation. The precision output voltage level is maintained within tight tolerances (±2.0%) over wide temperature ranges.

In summary, the MC79M08CTG is an integrated low-dropout linear voltage regulator with a wide range of input voltages, fast transient response, low dropout voltage and low quiescent current. It provides a precise output voltage level and can deliver up to 400 mA of load current. It is suitable for a wide range of applications, such as automotive and industrial, as well as distributed and point-of-load power architecture. Its working principle is based on the integration of two stages, to ensure that the output voltage remains stable.

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