MAX6045BEUR+T Integrated Circuits (ICs)

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PMIC - Voltage Reference

Today, MAX6045BEUR+T is the latest voltage reference from Maxim Integrated and has a unique feature which makes the voltage reference especially suitable for a number of applications. This application note will explain the application field of MAX6045BEUR+T as well as its working principle, followed by a brief introduction of the PCB layout and grounding tips.

MAX6045BEUR+T is a multi-range, highly accurate current-mode voltage reference. It features an adjustable voltage range of 0.85V to 6V and can be used in a wide range of applications, including bootstrapping, DC/DC converters, and current sensing.The main advantage of the MAX6045BEUR+T is that it provides high accuracy and stability over the entire voltage range. Furthermore, it consumes very low power, has a low quiescent current, and is immune to supply spikes, making it ideal for battery-powered applications.

Working Principle

The MAX6045BEUR+T is a current-mode voltage reference, which means that it regulates the output voltage by controlling the current flow through the circuit. This is done through the use of two transistors, a series pass transistor and a shunt regulator. The series pass transistor is used to drive the current through the circuit, while the shunt regulator is used to monitor the current and adjust the output voltage accordingly. The MAX6045BEUR+T also includes a temperature compensation module, which is used to ensure that the reference voltage stays stable over a wide temperature range.

The MAX6045BEUR+T also has an integrated voltage reference buffer, which can be used to reduce the dynamic response of the circuit. The buffer is also used to reduce the output noise, while the onboard temperature compensation module ensures the reference voltage is not affected by changes in temperature.

PCB Layout and Grounding Tips

In order to ensure the best performance of MAX6045BEUR+T, it is important to make sure that the electrical grounding of the circuit is correct. The PCB layout should include a ground plane, which should be connected to the main ground of the system. It is also important to pay attention to the placement of the components on the board, as some components may interfere with the electrical performance of the device.

In addition, it is important to ensure that the power supply lines from the devices to the references remain as short as possible. This will ensure that the reference voltage does not fluctuate due to transient voltages, resulting in better accuracy and more reliable performance. Finally, it is important to pay attention to the maximum current rating of the device, as this should not be exceeded.

Conclusion

The MAX6045BEUR+T is an excellent choice for voltage reference applications, thanks to its wide voltage range, low power consumption, low quiescent current and immunity to supply spikes. It is important to pay attention to the PCB layout and grounding techniques in order to ensure optimal performance. Furthermore, it is also helpful to understand the working principle of the device, in order to make the best use of it and to ensure that it is used correctly.

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