MAX6043BAUT25-T

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The MAX6043BAUT25-T is a type of voltage reference in the PMIC (Power Management Integrated Circuit) family. It is a low voltage output voltage reference that provides very precise fixed voltage references for power supply and voltage regulation applications. It has an enable input pin for microprocessor control, and can be used for a wide range of voltages from 1 to 25 V.

The MAX6043BAUT25-T features less than 0.2 mV output voltage change over its specified operating temperature range, and is designed with a high accuracy laser trimmed band-gap reference that is guaranteed at each temp/voltage setup. It also offers a power-down feature and a logic level enable input.

Applications

The MAX6043BAUT25-T voltage reference is useful in a wide range of power supply and voltage regulation applications. It can be used as a reference for power management components such as switching regulators, charge pumps, and other high frequency switching PWM controllers, as well as linear voltage regulators. The MAX6043BAUT25-T is also suitable for low current and high current applications, providing reliable and precise voltage references for voltage regulation circuits such as buck converters, boost converters, and flyback converters. It’s also suitable for microprocessor applications, providing a precise reference for software controlled shutoff and power sequencing.

Working Principle

The MAX6043BAUT25-T voltage reference works on the principle of a band-gap voltage reference. This works by creating an electrical circuit which has two parallel paths with two different junction voltages (each adjusted with temperature and current) that create a voltage that should remain constant with temperature, parasitic or process variations. The band-gap reference has a resistor divider that sets the output voltage, and the voltage reference input is applied to the resistor divider to keep the voltage constant. The output voltage from the voltage reference is then compared to the voltage from the resistor divider, and the difference between the two is sent to the 1.25 volts reference input.

The bandwidth of the voltage reference is determined by the ratio of the two resistors. The higher the ratio, the narrower the bandwidth, and the better the immunity to contact bounce, voltage spikes, and noise, thus ensuring a reliable output voltage.

Conclusion

The MAX6043BAUT25-T voltage reference is a reliable, low voltage output, high accuracy voltage reference suitable for applications including power management components and low current/high current voltage regulation circuits. It’s based on a band-gap voltage reference design with a precision resistor divider that delivers precise output voltage, and offers tight windows of operation and exceptional tolerance to contact bounce, noise, and voltage spikes.

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