NJU7222L50

Voltage Dropout (Max):	0.6V @ 100mA
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type:	Through Hole
Operating Temperature:	-25°C ~ 75°C
Protection Features:	Short Circuit
Control Features:	--
PSRR:	--
Current - Output:	100mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	14V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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The NJU7222L50 is an advanced voltage regulator, classified as a linear voltage regulator, which is part of a family of power management ICs (PMICs). This voltage regulator is suitable for applications with low noise, low temperature drift and low dropout, as well as low current operation, thanks to its optimization in terms of speed and power management.

Applications

The NJU7222L50 can be used in a wide range of applications, from mobile phone chargers to portable appliances, from entry-level to high-end audio equipment. Due to its low dropout voltage and low current operation, this voltage regulator can be used for audio-signal systems that are sensitive to noise, due to its superb noise suppression characteristics. This regulator also boasts temperature drift and a wide operating temperature range, making it suitable for a variety of application environments. Additionally, due to its high-reliability design, it can be used in consumer electronics, computers or industrial applications.

Working Principle

The NJU7222L50 voltage regulator consists of a three-terminal adjustable regulator – composed of a series pass element with an integral filter – and reference resistor, output over-current protection circuit and temperature protection circuit. The pass element, along with the filter, regulates the output voltage of the voltage regulator and the reference resistor is used to adjust the output voltage. The current protection circuit protects the regulator from excessive current flow, while the temperature protection circuit protects the regulator from high temperature stress. The series pass element comprises a diode, voltage regulator and resistor. The diode is used to block current flow in the wrong direction and the voltage regulator is used to reduce the voltage level of the input voltage to the output voltage. The resistor is used to balance the various voltages present, allowing the output voltage to remain constant by controlling the resistance of the circuit. The filter is used to reduce the AC ripple in the output voltage, ensuring a clean and stable output.

Conclusion

In conclusion, the NJU7222L50 voltage regulator is an advanced voltage regulator that is part of a family of PMICs. It offers users a low dropout voltage, low current operation, temperature drift and low noise characteristics, making it suitable for use in a wide range of applications, from phone chargers to high-end audio systems. Its series pass element and filter make it ideal for providing a clean and stable output, while its current and temperature protection circuits ensure reliability and longevity.

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