L78L15ABZ

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The L78L15ABZ is a three-terminal positive voltage regulator designed for use in fixed voltage applications. It is installed as a low dropout device, allowing it to regulate voltage even at very low input supply voltages. The L78L15ABZ is a cost-effective solution for many consumer and industrial applications, providing a regulated voltage output with a wide range of selectable options. The device is also commonly used in automotive, medical, industrial, and consumer electronics.

The features of the L78L15ABZ

• The L78L15ABZ is a cost-effective solution for many consumer and industrial applications, providing a regulated voltage output with a wide range of selectable options.
• It has a low sliding current of 1 μA and the output current can reach up to 150 mA.
• The device is protected from output short circuit, reverse polarity and thermal overload.
• It is ESD, overload, and transient protected.
• The device has a low dropout voltage of 0.7V.
• The device is available in two packages: TO-92 and SOT-223.
• The device also has excellent electrical characteristics, including ripple and line regulation.

L78L15ABZ application field

• The L78L15ABZ can be used in a wide range of consumer and industrial applications, such as automotive, medical, industrial, and consumer electronics.
• It is widely used in DC-DC buck converter, battery backup circuit, industrial and automotive applications.
• It is also used for powering LED lights and LCD displays.
• The device is also highly suitable for controlling and monitoring low power analog circuits.
• The device is also used in voltage regulator and current limiter applications.

L78L15ABZ working principle

The L78L15ABZ is a three-terminal positive linear voltage regulator that offers both high accuracy in output voltage regulation and stable operation over a wide temperature range. The devices operate with supply voltage ranging from 10V to 20V and are capable of providing an output voltage range of 3.5V to 15V. The device is capable of withstanding up to 40V in reverse polarity.

The L78L15ABZ primarily functions by a process known as Zener breakdown. A PN junction, which is the basic operational element of the device, is connected to a reference voltage and acts as a controlled current source. As the input voltage varies, the output voltage is maintained constant by the action of the Zener breakdown process.

The L78L15ABZ is designed to provide excellent quality output voltage regulation with excellent electrical characteristics (ripple and line regulation). This is achieved using the built-in overvoltage and thermal protection circuits which monitors both the output voltage and temperature. In the event of an excessive surge above the rated voltage or temperature, the device will automatically shut down and restart when the conditions are safe.

Conclusion

The L78L15ABZ is a linear voltage regulator that is widely used in a range of applications. The device is suitable for both consumer and industrial applications, and its excellent electrical characteristics make it ideal for controlling and monitoring low power analog circuits. The device has a low dropout voltage of 0.7V and is protected from output short circuit, reverse polarity and thermal overload.

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