TLE4253EXUMA2

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PMIC - Voltage Regulators - Linear involves a variety of technology and components. TLE4253EXUMA2 is one of the most commonly used voltage regulators in the PMIC - Voltage Regulators - Linear family. This application field and working principle is the main focus of this article.

Introduction

TLE4253EXUMA2 is a Linear voltage regulator, integrated circuit containing 18 pins in a 3 mm x 3 mm body. It is available in standard fixed output voltages of 1.5V, 1.6V, 1.8V and 2.5V, with an adjustable output voltage (VAdj) range of 1.2 to 3.3V. It provides a typical output current capacity of 50mA. It utilizes an external inductor to regulate the output voltage. The voltage regulator can be connected to the microprocessor or other intelligent electronic devices, ensuring a stable and reliable low dropout power supply.

Application field

TLE4253EXUMA2 is best suited for applications like Smartphones, tablets, wearable devices and other portable electronic devices. It is also used in powered equipment such as switches, routers and USB devices that require an adjustable voltage output. This voltage regulator can also be used in DC/DC converters to deliver a constant output voltage.

The voltage regulator has wide input voltage range of 1.6 to 5.5V. It has a low dropout voltage of 200mV without a current limit in a stand-by state. The device can be easily configured by setting the current limit with a resistor. It also has a low quiescent current of 350uA and high efficiency of 90% in a very small package. Therefore, it is suitable for applications which require high efficiency, small size, low power loss and low quiescent current.

Working Principle

The working principle of the TLE4253EXUMA2 voltage regulator is based on the linear voltage regulator principle. It works by comparing the output voltage to the reference voltage provided by the voltage reference IC. When the output voltage is lower than the reference voltage, the regulator allows more current to flow through the pass element which is usually a MOSFET. This increases the output voltage until it reaches the reference voltage. The current limit is then set using a resistor, so that the output current is not excessive.

The regulator is equipped with an external inductor which helps in improving the power efficiency. The inductor is connected between the source and the output of the MOSFET and is used to store energy as the current charges up. This energy is used as the voltage drops back, reducing the amount of energy needed from the input. This helps reduce the power dissipation, improve the power efficiency and enhance the overall system performance.

Conclusion

TLE4253EXUMA2 is an adjustable voltage regulator from PMIC-Voltage Regulators-Linear family specially designed for applications in smartphones, tablets and other portable devices. It features wide input voltage range, low dropout voltage, low quiescent current and a high efficiency of up to 90%. It works on the linear voltage regulator principle and makes use of an external inductor to reduce the power dissipation and improve the efficiency. With its multiple advantages and features, TLE4253EXUMA2 is an ideal choice for multiple applications.

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