CDLL4576

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Zener diodes are regular two-terminal diodes that have a negative temperature coefficient. As the temperature increases, the Zener voltage decreases. This makes them ideal for use in voltage regulation applications. The CDLL4576 is a single Zener diode that offers these advanced features.

CDLL4576 Application Field

The CDLL4576 is a single Zener diode widely used in a variety of applications, particularly in automotive electronics, where it is used for voltage regulation and voltage protection. It is capable of withstanding reverse voltages up to 75V, making it suitable for automotive and industrial applications. The low leakage current ensures high reliability.

In addition, the narrow tolerance of the Zener Voltage ensures consistent and reliable performance. The ultra-low regulator series resistance of the CDLL4576 make it ideal for pulse load applications. It is also compatible with the TSOP6 package and is particularly well suited for applications with high ESD susceptibility, such as radio equipment, where the RSOP6 package provides maximum protection.

CDLL4576 Working Principle

The CDLL4576 includes a single silicon diode junction, or “Zener” diode, that provides the voltage regulation and signal isolation for the circuit. The diode is comprised of two parallel doped regions, an n-type surface layer and a p-type surface layer. When a forward-biased voltage is applied to one end of the Zener diode, current will flow from one surface layer to the other.

When a reverse-biased voltage is applied to the diode, the voltage level when avalanche occurs is referred to as the Zener Voltage. The Zener Voltage is regulated and within a specific tolerance range. As the temperature rises, the Zener voltage decreases. This decrease in the Zener Voltage is referred to as the negative temperature coefficient.

The CDLL4576 is capable of providing high Zener Voltage accuracy across a wide range of temperatures. This ensures that the Zener diode provides stable, consistent and reliable protection and regulation without requiring complex temperature compensation circuitry.

Conclusion

The CDLL4576 is a single Zener diode and is ideal for automotive, industrial, and pulse load applications, owing to its high Zener Voltage accuracy across a wide range of temperatures and its ultra-low regulator series resistance. The TSOP6 package also provides enhanced ESD protection, making the CDLL4576 a reliable and robust solution.

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