AZ1085CD-3.3TRG1

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AZ1085CD-3.3TRG1 Application Field and Working Principle

AZ1085CD-3.3TRG1 is a Linear Voltage Regulator (LVR) from the PMIC (Power Management IC) family. It is designed to efficiently provide output voltages of 3.3V with maximum current of 1A.

This particular LVR is very popular with portable electronic device designers, as it offers low quiescent current, high efficiency and low output voltage ripple. In addition, certain versions of the AZ1085CD-3.3TRG1 can also operate up to 4.1V input, making it ideal for battery-powered devices.

Application Fields

The main application fields of the AZ1085CD-3.3TRG1 are portable consumer electronics such as smartphones, tablets, digital cameras, and portable media players. It can also be used in applications that require an efficient system with a stable 3.3V output from a battery or USB power source.

Working Principle

The AZ1085CD-3.3TRG1 works on the principle of linear regulation, the process by which an LVR adjusts the output voltage to a fixed value regardless of changes in the input voltage. This is achieved using an internal voltage reference, which serves as the voltage reference for the output voltage.

An amplified error signal is produced when the output voltage is not at the desired set point. This error signal is applied to the LVR’s internal error amplifier and the output is then adjusted until the error signal is nulled, meaning the output is at its desired value. The result is that the output voltage is held at the desired setpoint.

Protection Features

The AZ1085CD-3.3TRG1 has built-in protection features that protect the device from over-current and thermal overload conditions. The built-in over-current protection limits the output current to 1A and the thermal overload protection shuts down the regulator if the junction temperature exceeds its specified maximum value.

Performance

The AZ1085CD-3.3TRG1 has a line regulation of 0.1% and a load regulation of 0.2%. Its output ripple is less than 1mV peak-to-peak. At 5V, 1A output load and 25C ambient temperature, the device has a quiescent current of 34mA. The device has a high efficiency of up to 97%.

Conclusion

The AZ1085CD-3.3TRG1 is a linear voltage regulator (LVR) from the PMIC family. It is used in various portable and battery-powered devices and works on the principle of linear regulation, which is achieved using an internal voltage reference. It provides 3.3V output with a maximum current of 1A and has good efficiency and output ripple characteristics. The device also has built-in protection features to protect it from over-current and thermal overload.

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