LDK320AM25R

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The LDK320AM25R is a 3A adjustable three-terminal linear voltage regulator designed to provide an accurate and regulated output voltage over a wide input and temperature range. This low-cost, low-noise regulator is designed to be adjustable and offers a tracking option with a second, identical adjustable regulator and eight output voltage options. It is ideally suited for low power applications in a wide range of industries, and is particularly well suited for applications requiring an adjustable output or an output of +5V with precision accuracy.

Overview of LDK320AM25R

The LDK320AM25R is a low power, low noise, three-terminal adjustable linear voltage regulator with an adjustable output voltage range of 1.2 to 13.8V. It is capable of delivering up to 3A of continuous output current. Internal over-temperature and over-current protection is included for extra safety, and the device is built with a maximum output drop of 0.2V at full load. Additionally, the device is constructed with an adjustable line regulation and a temperature coefficient of just 0.1%. This regulator features low noise and is designed to eliminate the need for external capacitors, which makes it ideal for applications where accuracy, reliability, and low noise are of paramount importance.

Application Field of LDK320AM25R

The LDK320AM25R is a versatile voltage regulator that is suitable for a wide range of applications. It is particularly well suited for use in microprocessor and logic circuits, as well as automotive and lighting applications. Additionally, it is suitable for use in portable device power management, motor control, and medical device systems. This regulator can also be used in computer memory and power supply applications, as well as UPS systems, personal computers and industrial equipment.

Working Principle of LDK320AM25R

The LDK320AM25R is a three-terminal adjustable linear regulator featuring an adjustable output voltage from 1.2 to 13.8V. The device is constructed with an adjustable line regulation and a temperature coefficient of just 0.1%. This regulator has internal over-temperature, over-current and time-delay protection for extra safety. The device is also designed to eliminate the need for external capacitors and features low noise operation.

The LDK320AM25R operates on a device-based negative regulation principle. This means that the output voltage is regulated by negatively regulating the voltage across an internal resistor network. When the device is not in regulation, it simply limits the output current in order to maintain a stable output voltage. The internal current limiting circuits ensure that the device will not suffer permanent damage due to excessive loading. The internal compensation circuitry ensures that the output voltage is held within a very tight window over the range of input voltages.

When a load is connected to the output of the LDK320AM25R, and the input voltage exceeds the output voltage by a specified voltage drop, the internal transistors start passing the excess current from the input to the output, thus regulating the output voltage. If the load current changes, the internal circuitry continuously adjusts the output voltage to keep it within the predetermined range. This maintains the voltage accuracy and eliminates the need for external compensation.

Conclusion

The LDK320AM25R is an adjustable three-terminal linear voltage regulator that is ideally suited for applications requiring an adjustable output or an output of +5V with precision accuracy. It offers a tracking option with a second, identical adjustable regulator and eight output voltage options. The low-cost, low-noise regulator is designed to offer an accurate and regulated output voltage over a wide input and temperature range, and is suitable for portable device power management, motor control, and medical device systems. Internal over-temperature and over-current protection is included, and it is capable of delivering up to 3A of continuous output current with a maximum output drop of 0.2V at full load.

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