NJU7222L2-50

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Part Status:	Obsolete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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NJU7222L2-50 Application Field and Working Principle

PMIC (Power Management Integrated Circuits) play an integral role in the design of today’s power systems. With advancements in technology, there are various solutions to deliver power in order to reduce the energy loss in a power regulation system. One of such solutions is the NJU7222L2-50 linear regulator which is a type of voltage regulator.

Application Field

NJU7222L2-50 is a linear regulator which is used in various types of applications to fulfill the need of an accurate and stable power supply. This regulator offers an extremely low dropout voltage of 50mV (at 1A output current) which is ideal for portable and low power device applications. It provides a low input voltage of 3V to ensure a low system power consumption. Due to its features, the NJU7222L2-50 is often used in digital audio systems, music streaming players, digital media players, and many other consumer electronics.

Working Principle

The NJU7222L2-50 linear regulator is a three-terminal voltage regulator which is designed to provide precise adjustable output voltage from an input voltage source from 5V to 12V. It utilizes a precise optically coupled feedback network to monitor and maintain the output voltage at the desired value. The voltage regulator includes a voltage reference, error amplifier, current limiter, thermal shutdown, and output power amplifier.In operation, the NJU7222L2-50 is connected between the input voltage source and the output voltage. When the input voltage is applied, the voltage reference generates a precise reference voltage which is used as the reference for the error amplifier. When the output voltage is higher than the reference voltage, the error amplifier increases the output of the power amplifier to reduce the output voltage. Conversely, if the output voltage is lower than the reference voltage, the output of the power amplifier is decreased to increase the output voltage.The current limiter provides a current limit to protect the IC from high current, while the thermal shutdown shuts down the IC when the temperature of the device reaches its maximum temperature rating. Moreover, the NJU7222L2-50 regulator is also equipped with output voltage error detection and reset circuitry to ensure proper operation during over-voltage and under-voltage conditions.

Bottom Line

The NJU7222L2-50 linear regulator provides an optimal, low-cost power regulation solution for consumer electronics applications. Its low dropout voltage and precise voltage regulation make it highly suitable for portable and low power devices. Furthermore, its current limit protection and thermal shutdown make it a reliable and safe regulator for various applications.

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