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Today, I will talk to you about how to carry out the basic use of AMS1117-3.3V power module, which may not be understood by many people. In order to let everyone know more, Xiaobian summarized the following contents for everyone. I hope you can gain something according to this article.

1. description

AMS1117 chip is a common type of power chip in embedded system, which can be seen on many development boards. The chip is a forward voltage regulator. There are two versions, the adjustable version ADJ and the fixed voltage output version. Output voltage: 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V.

Since the power supply voltage of stm32 is 3.3V, and the voltage output by the USB port is 5V, the voltage output by the USB port cannot directly supply power to the chip, and a voltage conversion chip is needed in the middle to convert it into a voltage of 3.3V for the chip.

2. Shape and package

Appearance as shown below

The basic encapsulation types are as follows

Next, let's enjoy the physical image on the development board

3. standard circuit design

There are two types, one is fixed output voltage, such as 3.3V or 1.8V.

The other is adjustable output voltage

4. actual use

In the actual use of the circuit, a filter will be made according to the specific situation. Here are two circuit schemes in actual products

3.3V output with adjustable AMS1117

Direct output voltage of 3.3V

After reading the above, do you have any further understanding of how to carry out the basic use of AMS1117-3.3V power module? If you still want to know more knowledge or related content, please pay attention to the industry information channel, thank you for your support.

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