NJU7211L2-30

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NJU7211L2-30 is typically used for voltage stabilizing and linear voltage regulating applications. It is a 3-terminal adjustable regulator. The device is available in a TO-252-3 or TO-220-3 package.

Application Field

The applications of NJU7211L2-30 extend from distribution, power supply, and control applications to communications and industrial systems. This linear voltage regulator is suitable for applications such as DC-DC converters, systems requiring stability and accuracy in output voltage, and systems that necessitate very low quiescent current and fast transient response. Typical applications of NJU7211L2-30 include:

• Distribution and control systems
• Battery and adapter-based power supplies
• Secondary regulated supplies
• Digital broadcast systems
• Telecommunications systems
• Industrial computer systems
• Voltage regulators for automotive applications

Working Principle

NJU7211L2-30 is a positive voltage regulator with adjustable voltage output and a current limit of 150mA. It includes an internal temperature-compensated reference, an error amplifier, an on-off control circuit, and a current sensing circuit. The power supply rejection is improved compared to fixed regulators. The on-off control circuit can control the frequency of the switching transistor located at the output to prevent the power dissipation in the regulator from exceeding the maximum limit.

The device provides short-circuit current limiting and thermal shut-down protection. The device operates with an input voltage up to 40V, and the output voltage can be set over the range of 0.8V to 40V. The device is packaged in a TO-252-3 or TO-220-3 package and is capable of providing an output current of up to 150mA.

NJU7211L2-30 can be applied in various circuit topologies. It is ideal for linear voltage regulator circuits in which the output voltage is set with a resistor divider network or the reference voltage from a bandgap reference circuit. The device can also be used as a current sink to provide a constant current for circuits that require precise current levels. Additionally, the device can be used for inrush current limiting applications.

Conclusion

NJU7211L2-30 is a voltage regulator with adjustable voltage output, capable of providing continuous output current up to 150mA. This device is simple to use and suitable for many application fields. NJU7211L2-30 has an excellent power supply rejection, temperature compensation, wide adjustment range, and excellent line and load regulation.

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