AP1119Y50L-13

PMIC-Voltage Regulators-Linear

The AP1119Y50L-13 is a low dropout regulator from Diodes Incorporated. It can output a voltage up to 13V, which enables it to be used in various linear applications. This article looks at the types of applications for which this regulator is best suited, as well as its main operating principle.

Application Fields

As a linear regulator, the AP1119Y50L-13 can be used in a wide range of applications. It is most commonly used in automotive applications, as it is extremely efficient and robust enough to handle rough conditions. It is also suitable for use in data storage applications and in industrial control, thanks to its small size and wide operating temperature range.

This regulator is also suitable for use in portable electronic devices, such as laptops, tablets and smartphones, where its low power consumption is beneficial. Its high efficiency and low current requirements make it an ideal choice for battery-powered applications.

Working Principle

The AP1119Y50L-13 is a linear regulator, meaning that it works on the principle of controlling the output voltage by “pulling” it up or down with respect to the input voltage. This is done by “shifting” or varying the base-emitter junction’s voltage of the transistor in the regulator in order to ensure that the output voltage remains at the correct level.

The way this is accomplished is by using a differential voltage amplifier circuit, which controls the effective base-emitter voltage through the use of feedback resistors. When the output voltage rises above its expected level, the voltage amplifier circuit responds by increasing the effective base-emitter voltage, which in turn reduces the output voltage. Similarly, when the output voltage drops, the amplifier reduces the effective base-emitter voltage, and thus increases the output voltage. This ensures that the output voltage remains as close as possible to the required level, even when the input voltage varies.

Conclusion

The AP1119Y50L-13 from Diodes Incorporated is a linear regulator, which can be used in a variety of applications. It is most commonly used in automotive and data storage applications, as well as in industrial control and portable electronic devices, due to its small size and efficient power consumption. Its operating principle involves using a differential voltage amplifier circuit to ensure that the output remains as close as possible to the correct level, even when the input voltage varies.