NJU7201L55

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Introduction to NJU7201L55

The NJU7201L55 is a low-noise, low-dropout linear voltage regulator integrated circuit (IC). It was released by New Japan Radio Co. Ltd. in July 2018. Designed to deliver a stable operation voltage with a current capacity up to 800mA, the NJU7201L55 is a compact and reliable 3-pin voltage regulator that is ideal for a range of consumer and industrial applications.

Application Fields for NJU7201L55

The NJU7201L55 can deliver high precision voltage outputs at currents up to 800mA with no load regulation. This makes it the perfect choice for high power consumer and industrial applications. Examples of the NJU7201L55’s common use cases can be found in medical and automotive electronics, laptop adapters, power supplies and audio equipment. Additionally, due to its low-noise and low-dropout, the NJU7201L55 can deliver ideal performance in noise sensitive areas such as integrated circuits, audio amplifiers and voltage buffers.

Advantages of NJU7201L55

The NJU7201L55’s features several advantages to users. In addition to its low-noise and low-dropout, the device draws low current and is rated for a maximum operating temperature of 125°C, making it an ideal choice for applications operating in extreme conditions. The NJU7201L55 also offers a wide input voltage range of 2.6V-20V, allowing users to regulate a wide variety of input voltages. Additionally, an integrated output over-current protection function helps to ensure stable operation even in the event of a short circuit.

Working Principle of NJU7201L55

The NJU7201L55 utilizes a classic linear voltage regulation technique. As such, the device works by processing differences between the desired output voltage and the input voltage. When the input voltage is higher than the desired output voltage, the NJU7201L55 will charge the output capacitor to bring the output voltage down to the desired level. Conversely, if the input voltage is lower than the desired output voltage, the device will discharge the output capacitor to bring the output voltage up to the desired output voltage.

When using the NJU7201L55, a charge pump output capacitor is required for stable output. This capacitor helps to maintain the output voltage by filtering out any noise and providing buffering capacity to the voltage regulator. Additionally, the NJU7201L55 requires the use of an external resistor and Diode for temperature compensation.

Conclusion

The NJU7201L55 is a reliable and efficient low-noise, low-dropout 3-pin voltage regulator integrated circuit (IC) designed to deliver a stable operation voltage with a current capacity of up to 800mA. Its wide input voltage range and integrated output over-current protection function make it a viable choice for a range of consumer and industrial applications. Its working principle, relying on the classic linear voltage regulation technique, makes it the perfect choice for noisy and sensitive applications.

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