NB634EL-LF-Z

Voltage - Input (Max):	24V
Supplier Device Package:	14-QFN (3x4)
Package / Case:	14-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	500kHz
Current - Output:	5A
Voltage - Output (Max):	21.6V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The NB634EL-LF-Z is a non-isolated DC-to-DC switching regulator from Power Integrations, Inc. featuring an input voltage range from 4.5V to 36V and providing a 2.2A of continuous output current. It is one of the most popular voltage regulators used in handheld, battery-powered devices such as smart phones and portable media devices. It is designed to provide a low-noise and stable output voltage to sensitive components, while simultaneously reducing system power consumption. This regulator is approved to the latest RoHS standards and uses the latest silicon integration technologies.

Application Field

The NB634EL-LF-Z is designed to be used in solar-powered and other low-power applications. It offers maximum efficiency with minimum switching losses. It also offers a wide range of input voltages and output power capabilities, making it suitable for a variety of system configurations. This device is also frequently used for mobile phone chargers, car audio amplifiers, and other consumer electronic applications.

Working Principle

The NB634EL-LF-Z is a buck switching regulator, meaning that it converts input voltage to a lower output voltage by alternately switching the input voltage on and off. The off-time duration is determined by the circuit\'s inductor and capacitor values. The inductor stores energy which is released when the voltage is reduced. This helps to ensure stable power delivery to the output circuit. The NB634EL-LF-Z is also equipped with a protection circuit to protect the converter from damage due to blocked inputs, over voltage, overtemperature, and other abnormalities. It is designed to provide maximum output current and deliver low output noise and distortion with minimum power consumption.

Conclusion

The NB634EL-LF-Z is an excellent choice for many applications where a reliable, low-noise voltage regulator is needed. Its wide input voltage range and low power consumption make it an ideal solution for use in mobile, solar, and other battery-powered devices. Its on-board protection circuit ensures that it will operate safely in the event of abnormalities such as blocked input or overvoltage.

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