NB675LGL-Z

Voltage - Input (Max):	22V
Supplier Device Package:	21-QFN (3x4)
Package / Case:	21-PowerVFQFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	500kHz
Current - Output:	10A
Voltage - Output (Max):	5.5V
Voltage - Output (Min/Fixed):	0.6V
Series:	--
Voltage - Input (Min):	4.7V
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 NB675LGL-Z, or NB675LGL, is a power management integrated circuit (PMIC) designed to help manage power in electronic systems which require a reliable, adjustable and easy to use voltage regulator. The device is a DC-DC buck converter which is widely used to step down an input voltage and provide an adjustable output voltage. This includes applications such as telecom systems, battery-powered systems, portable computers and even automotive electronics.

Application Fields

The NB675LGL-Z is suitable for a wide variety of applications due to its flexibility. Examples include powering field programmable gate array (FPGA) chips, powering digital logic circuits and providing power to multiple processors and peripherals. Furthermore, the device can also be used for portable and low power applications such as cell phones, portable audio players and even remote sensors. Additionally, because the device is a highly efficient and adjustable voltage regulator, it can be used in automotive electronic applications as well.

Working Principle

The NB675LGL-Z operates by utilizing a synchronous buck PWM regulator. The integrated circuit implements a current mode control architecture which is based on fixed frequency, stable periodic phase shifting. This architecture provides reliable line (input) and load regulation, minimal noise, low noise output ripple and fast transient response.In order to operate, the NB675LGL-Z requires two main voltage supply rails: an input voltage and an output voltage. The input voltage is used to provide power to the circuit, while the output voltage is used to provide the required voltage to the load connected to the output of the circuit. Furthermore, the NB675LGL-Z has two integrated adjust pins which are used to configure the output voltage and the output current limit of the device.Furthermore, the power MOSFETs of the converter feature integrated over temperature protection and fast turn-on/turn-off speeds. Additionally, the device also features a temperature and over current warning output which can be used by system to alert the user when any of these parameters exceed a predetermined threshold.

Conclusion

The NB675LGL-Z is a DC-DC buck converter which offers users a wide range of applications and a reliable, adjustable and easy to use voltage regulator solution. The device is suitable for FPGA, digital logic and multiple processor/peripheral applications, as well as portable and low power applications. The device operates by utilizing a synchronous buck PWM regulator, and features an integrated current mode control architecture which provides reliable line (input) and load regulation. Further, the device is equipped with two integrated adjust pins, temperature and over current warning outputs, and integrated power MOSFETs with over temperature protection and fast turn-on/turn-off speeds.

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