CDLL5917D

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CDLL5917D is a Zener diode designed for low-power voltage regulation and for automatic limiting of power supply line transients. Voltage regulation based on this diode is achieved via a pair of series connected, adjustable resistors. The adjustable resistor allows users to set the desired output voltage from a connected power supply. When the voltage of the connected power supply exceeds the Zener voltage, the diode will protect the power supply from further rising.

The CDLL5917D offers important advantages over other Zener diodes, including fast response times, low noise operation and high stability. It has a low dynamic resistance, and a very low capacitance of only 1.2 pF, resulting in a wide operating range and low turn-on voltage. Additionally, it offers low power dissipation, allowing higher efficiency in power supply applications.

The CDLL5917D is commonly used in many types of power supply designs, especially in those used in applications such as battery-powered devices and computer peripherals. The low operating current of this diode makes it ideal for products that require low power consumption. It is also commonly used in a variety of power supply protection circuits, such as those used to protect against lightning transients and other high-voltage fluctuations.

The CDLL5917D is capable of withstanding very high transient voltages and is designed to have a low turn-on voltage, making it an excellent choice for applications where low-power, high-stability devices are required. By connecting two or three series resistors, users can adjust the Zener voltage to match the applied power supply voltage. This makes the CDLL5917D very useful in applications where the regulated voltage must be closely controlled.

To illustrate the working principle of the CDLL5917D, consider a battery-powered device that requires 5V of regulated voltage. The device is powered from a 9V battery, and a pair of resistors is used to adjust the desired output voltage. When the power supply voltage exceeds the Zener diode\'s breakdown voltage, the diode will conduct and clamp the power supply voltage at the desired level. This limits the peak voltage of the power supply and prevents any further rise. As a result, the device is able to maintain an uninterrupted 5V output voltage, regardless of irregularities in the power supply.

In summary, the CDLL5917D is a precision Zener diode designed for low power, high-stability voltage regulation applications. Advanced design features such as its small capacitance, low dynamic resistance and low operating current allow the diode to be used in a wide range of products that require low-power consumption. Its ability to withstand high transient voltages also makes it an excellent choice for protecting power supplies from lightning transient overvoltages and other high-voltage fluctuations.

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