BD8961NV-E2 Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	BD8961
Supplier Device Package:	SON008V5060
Package / Case:	8-VDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-25°C ~ 105°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1MHz
Current - Output:	2A
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to the BD8961NV-E2

The BD8961NV-E2 is a DC-DC switching regulator integrated circuit (IC) designed and manufactured by ROHM. This IC is an adjustable step-down switching regulator that can be used to solve a wide range of power supply problems. It integrates a wide range of features and functions, making it suitable for most applications, and is easily integrated into any system.

Application Field

The BD8961NV-E2 DC-DC switching regulator is a highly versatile IC that can be used in multiple applications, such as:

• Automotive Electronics: The wide input range of the IC allows for it to support a variety of automotive supplies. From 12V to 24V power sources as common in automotive applications, the regulator can be adjusted accordingly.
• Power Supplies: The BD8961NV-E2 can be used in power supplies such as those found in computers and consumer electronics. The IC features an adjustable output voltage and current limiting.
• HVAC Systems: The BD8961NV-E2 can be used in HVAC systems, as it can support a wide input voltage range and provides current limiting.
• Industrial Automation: The regulator is designed with built-in circuit protection and can be used in industrial applications. The wide input range can support industrial automation.
• Battery Charging: The BD8961NV-E2 is well-suited for battery charging due to its adjustable output voltage and current limiting capabilities.

Working Principle

The BD8961NV-E2 is a high-efficiency, step-down DC-DC switching regulator that utilizes a Pulse Width Modulation (PWM) control technique to regulate output voltage. The integrated circuit is designed with a wide input voltage range, allowing it to support both high and low voltage sources.The PWM control technique is used to efficiently convert input power into output power. It works by rapidly switching on and off an output transistor in order to transfer energy from the input source to the output. The speed at which the transistor is switched is referred to as frequency and this determines the output voltage. The chip includes a built-in control circuit that automatically adjusts the frequency of the switching rate. At the same time, the control circuit adjusts the duty cycle so the load voltage remains constant.In addition to PWM, the BD8961NV-E2 also features a current limiting circuit, which is essential in many applications. This built-in circuit is designed to protect the system from over-current conditions and excessively high temperatures, as well as providing current limiting capabilities.

Conclusion

The BD8961NV-E2 is a highly versatile DC-DC switching regulator IC that can be used in applications ranging from military and aerospace systems to automotive, power supply, HVAC, and industrial automation. The IC utilizes a PWM control technique to regulate output voltage, while a current limiting circuit provides protection from over-current, high temperature conditions, and current limiting.

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