UA78L10ACDR Integrated Circuits (ICs)

UA78L10ACDR Application Field and Working Principle

UA78L10ACDR is a three-terminal, fixed output linear voltage regulator of the Positive-Voltage-Regulator family. This voltage regulator is primarily designed for personal computers, but can also be used for any circuit requiring a regulated supply. It has a variety of features such as low dropout voltage, low power consumption and low output noise. UA78L10ACDR is used in a variety of fields, including USB device charging, DC-DC converters, automotive electronics systems, and medical equipment.

UA78L10ACDR Features and Benefits

• Wide application range: The UA78L10ACDR can provide up to 1A of output current and is suitable for a variety of applications.
• Low dropout voltage: The device has a very low dropout voltage of 300mV at 1A output current, ensuring that the output voltage stays accurate even at low input voltages.
• Low noise: The device has a low output noise of 10uVrms across the frequency range.
• High accuracy: With a very low line and load regulation of 0.4%, the UA78L10ACDR ensures that the output voltage remains accurate.
• TTL shutdown mode:The TTL shutdown mode allows the device to be safely shut down in the event of a fault.

UA78L10ACDR Working Principle

The UA78L10AC DR Linear Voltage Regulator is able to provide a precisely regulated output over a wide input range by using a linear feedback circuit. This feedback circuit monitors the output voltage and adjusts the input current to maintain the desired output voltage. As the input voltage increases or decreases, the circuit adjusts the current to maintain the desired output voltage.

The UA78L10ACDR works through a process known as “error-amplification”. It compares the output voltage to a reference voltage and if the output voltage deviates from the reference voltage by more than the allowed tolerance, it increases or decreases the base current of the linear regulator thereby changing its output voltage. It then continues to adjust the current in the same way to maintain the desired output voltage.

Conclusion

The UA78L10ACDR is a linear voltage regulator which is capable of providing a precisely regulated output voltage over a wide input range. Its low dropout voltage, low noise, and high accuracy make it suitable for a variety of applications such as USB device charging, DC-DC converters, automotive electronics systems, and medical equipment.