LM2676SD-3.3/NOPB

LM2676SD-3.3/NOPB is a high-efficiency DC-DC converter, which belongs to the Voltage Regulators in the DC DC Switching Regulators category. The LM2676SD-3.3/NOPB adopts the synchronous buck-boost topology to deliver high efficiency, low ripple and fast transient response, providing a constant output voltage of 3.3V. This device also includes fixed frequency of 1 MHz, external soft start circuit, frequency synchronization capability and a wide input voltage range of up to 36V, meeting the requirements of different applications.

The application fields for the LM2676SD-3.3/NOPB can be divided into three main categories:

Industrial and Automotive Applications

For industrial and automotive applications, the LM2676SD-3.3/NOPB can be used in various applications that require a constant 3.3V output, such as power supplies for control and monitoring systems, LED drivers and satellite communication systems. The device operates in pulse-width modulation (PWM) mode, which enables it to deliver a higher efficiency and lower output issues than traditional linear regulators.

Computer and Networking Applications

For computer and networking applications, the LM2676SD-3.3/NOPB is suitable for applications such as LAN adapters and power supplies for PC motherboards. Its fast transient response and low output noise allows the device to provide a reliable output voltage even in dynamic operating conditions.

Telecommunication and Portable Systems

For telecommunication and portable use, the LM2676SD-3.3/NOPB can be used to power various portable devices and instruments that require a 3.3V output. Its wide input voltage range and low ripple output make it the ideal choice for portable applications that need to remain operational even in the case of a significant input voltage drop.

Working Principle

The LM2676SD-3.3/NOPB is based on the synchronous buck-boost topology, which allows for an efficient conversion of input voltage to the desired output voltage. The device uses a pair of MOSFETs in the buck-boost configuration to produce a constant 3.3V output. The MOSFETs are controlled by a pulse-width modulation (PWM) circuit, which adjusts the duty cycle of the MOSFETs in order to regulate the output voltage. The LM2676SD-3.3/NOPB also includes a frequency synchronization circuit, which allows for a faster response time and improved efficiency in dynamic operating conditions.

In addition to the primary synchronous buck-boost topology, the LM2676SD-3.3/NOPB also includes several secondary circuits that work in tandem with the synchronous topology. These secondary circuits include an external soft start circuit, a low startup current and a zero-drift current limit circuit. Combined, these circuits allow the LM2676SD-3.3/NOPB to deliver high efficiency, low output noise and fast transient response.

The LM2676SD-3.3/NOPB is a high-efficiency DC-DC converter that provides a 3.3V output with a wide input voltage range and low output ripple. The device also includes various secondary functions that help to improve efficiency and improve performance in dynamic operating conditions. This device is suitable for a wide range of applications that require a stable 3.3V output, including industrial and automotive, computer and networking and telecommunication and portable systems.