AZ1117BH-3.3TRE1

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It is important to understand the application field and working principle of the AZ1117BH-3.3TRE1 in order to properly design and implement the best power management system for any given situation. This device is part of the PMIC, or power management integrated circuit, family and specifically falls under the voltage regulator, linear category. As such, it can be used to provide a constant voltage output to devices, often times connected to a battery or other power source, to maintain the same output regardless of variations on the input.

The AZ1117BH-3.3TRE1 specifically offers 3.3 Volts of output from an input range from 0.7VDC to 5.0V. It also features adjustable voltage outputs from 10% to 15% below the rated output, depending on the version selected. The maximum output current is typically 500mA and it also features a relatively low quiescent current of 400μA. Further, this device also offers excellent load-and-line transient response, producing very clean Volt-per-Second slopes. It does not require any external compensation either and is an ideal solution for designs with current loads.

The AZ1117BH-3.3TRE1 linear regulator works by taking an input voltage and “regulating” it down to a set output voltage. This is done by using a series of resistors, capacitors, and transistors carefully configured in a feedback loop. The input voltage is applied to the input of the regulator while the output voltage is taken from the output of the regulator. The feedback loop adjusts the voltage output as necessary by changing the resistance of the transistors, thus allowing the output to remain steady at a set voltage.

When selecting this device for an application, proper consideration must be given to the input voltage range and the desired output. The device will supply up to 500mA of continuous regulated output current so the device must be able to handle the load. Additionally, it is important to consider the device’s temperature operating range and ambient temperature operating range to ensure the device can properly handle the conditions under which it will be running. Last, the cost of the device should be evaluated related to the benefits it brings compared to other available options.

In essence, the AZ1117BH-3.3TRE1 linear regulator is a typically used and well-specified solution for many low voltage designs. The device provides a fixed some variation in output voltage depending on the version selected, and offers excellent transient and noise responses. When properly selected, this solution can provide a supply that is well-regulated and efficient, requiring almost no external components. This integrated solution will allow for up to 500mA continuous regulated output current in a very small solution.

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