MIC94345-FYMT-T5 Application Field and Working Principle

The MIC94345-FYMT-T5 is a three-terminal adjustable linear regulator, capable of providing an output voltage up to 1.8 V. The device offers an ultra-low quiescent current of 2.2 µA and a maximum output current of 600 µA. Its output voltage can be adjusted with an external resistor, and the device also offers no-load protection with an output voltage setting pin, enabling it to be used in a wide variety of applications.

Application Fields

The MIC94345-FYMT-T5 is designed to be used in a variety of applications, including mobile communication, automotive systems, and other low-power applications that require an adjustable output voltage. It can be used to provide the supply voltage to logic, analog and mixed signal circuits, and for voltage-translation applications.

Working Principle

The MIC94345-FYMT-T5 operates using an adjustable positive-channel output voltage voltage regulator, an adjustable negative-channel output voltage voltage regulator, an adjustable voltage tracking voltage regulator, a Series regulator, and a No-Load protection feature.

Adjustable Positive-Channel Output Voltage Regulator

The adjustable positive-channel regulator allows the output voltage to be adjusted by an external resistor. This will allow the output voltage to be set to any desired level up to the maximum voltage of 1.8 V. The resistor ratio determined by the external resistor should be less than the ratio determined by the external diode voltage.

Adjustable Negative-Channel Output Voltage Regulator

The adjustable negative-channel regulator allows the output voltage to be adjusted by an external resistor. The voltage divider ratio is determined by the external resistor and the internal reference voltage. The external resistor should be chosen to provide the desired output voltage.

Adjustable Voltage Tracking Voltage Regulator

The adjustable voltage tracking regulator is used to adjust the output voltage by changing the internal reference voltage. The internal reference voltage can be changed by changing the voltage at the output voltage setting pin. This will allow the output voltage to be adjusted to any desired level up to the maximum voltage.

Series Regulator

The series regulator consists of an internal N-channel transistor and an external resistor. The transistor is used to regulate the current supply to the device. It limits the current that can be drawn from the device by controlling the voltage drop across the external resistor.

No-Load Protection Feature

The no-load protection feature of the MIC94345-FYMT-T5 allows for the device to be switched off when the output voltage falls below a certain level. This prevents damage to the device due to excessive current draw. This feature can also be used to reduce power consumption when the device is not being used.

Conclusion

The MIC94345-FYMT-T5 is an adjustable linear voltage regulator designed to be used in a variety of applications. It offers an output voltage range of up to 1.8V, and can provide the supply voltage to logic, analog and mixed-signal circuits. It also has an adjustable positive-channel output voltage regulator, adjustable negative-channel output voltage regulator, adjustable voltage tracking voltage regulator, series regulator, and no-load protection feature. These features make the MIC94345-FYMT-T5 ideal for use in low-power applications that require an adjustable output voltage.