TLV1117-33IDCYRG3

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The TLV1117-33IDCYRG3 is a 3A low drop-out voltage (LDO) regulator, belonging to the category of linear voltage regulators in the power management integrated circuits (PMIC) family. This article will cover the application field and working principle of this model.

Application

The TLV1117-33IDCYRG3 is designed specifically for programs that rely on a 3A low drop-out regulator (datasheet). This model is a direct plug-and-play replacement for the LM1117 series (such as LM1117-3.3 and LM1117-5.0) used in a wide variety of applications.

These applications involve scenarios where a low input voltage needs to be regulated to a steady output voltage. Examples of application fields include microcontrollers, digital signal processors, memory devices, network equipment, mobile device (smartphones, laptops, tablets, etc.) with low power requirements, and control circuitry in automotive, telec communications and metering systems.

The TLV1117-33IDCYRG3 has several advantages in these applications, especially in automotive and telecommunication systems where high temperatures and long-term reliability are a must. Thanks to its wide operating temperature range (from -40 °C to +125 °C), the TLV1117-33IDCYRG3 is durable and reliable for long-term use in these application fields.

Working Principle

The fundamental principle of a linear voltage regulator is simple yet quite effective. A transistor or operational amplifier - or a combination of both - is used to compare the output voltage to a reference voltage and either increase or decrease the output voltage accordingly. This is done by varying the amount of current flowing through the output.

The TLV1117-33IDCYRG3 is designed with a CMOS power-saving architecture, making it an efficient voltage regulator with high power efficiency. It features an internal error amplifier and bandgap reference, which enable it to accurately track the reference voltage and keep the output voltage at a stable level with low noise and ripple. The output voltage is adjustable within a wide range, allowing users to design their own circuits for different use cases.

It also has further smart features, such as short-circuit protection, thermal protection, overload protection and anti-surge protection, making it a suitable choice for safety critical applications. Finally, it also has a low drop-out mode, which gives it the ability to maintain a steady output voltage even with a low input voltage.

Conclusion

The TLV1117-33IDCYRG3 is a member of the PMIC family and belongs to the linear voltage regulator category. It is designed for programs that rely on low drop-out voltage regulators. It is suitable for many application fields, ranging from microcontrollers to automotive and telecommunication systems, thanks to its wide operating temperature range and smart features. Its working principle is based on an internal error amplifier, bandgap reference and CMOS power-saving architecture, allowing it to accurately track the reference voltage, maintain a steady output voltage and maintain a high power efficiency.

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