LM22676QTJ-5.0/NOPB

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Introducing the LM22676 QTJ-5.0/NOPB:

The LM22676QTJ-5.0/NOPB switching regulator is a DC to DC converter designed for use in a variety of applications. It is particularly suitable for desktop and server power supplies, automotive and portable device applications, and industrial equipment requiring high efficiency and low noise. The LM22676QTJ-5.0/NOPB has a low quiescent current, low EMI, and low surface mount component requirements that make it an attractive option for space-constrained designs.

Application Field and Working Principle

The LM22676QTJ-5.0/NOPB is a two-phase synchronous buck converter that utilizes a low-side driver and a high-side driver integrated into the switching regulator. It operates between a 4.5V to 28V input voltage range and provides an adjustable output voltage range of 0.3V to 32V. It has an externally adjustable frequency from 250kHz to 2.25MHz, allowing for a variety of different applications. The LM22676QTJ‑5.0/NOPB can operate with a minimum current mode control frequency of 500kHz and up to a maximum peak current mode control frequency of 2.25MHz.

The key to the LM22676QTJ-5.0/NOPB\'s excellent performance is the use of integrated power switches. These power switches are configured in a synchronous rectifier configuration, with the low-side driver responsible for the switching waveform being generated to the output winding, and the high-side driver controlling the waveform to the input winding. This allows the switching frequency of the switching regulator to be regulated as per the user\'s requirements. The integrated drivers are also responsible for detecting the presence of over-current, short-circuit and thermal shutdown conditions.

The LM22676QTJ-5.0/NOPB is a highly efficient and cost-effective solution for a variety of power supply applications. It features high-efficiency switching and offers low differential resistances between the input and output. The converter supports up to 95% efficiency when operated at 0.8V to 1.5V output voltage loads. With the integrated power switches, the converter does not require additional components, thereby saving layout space and reducing external component count.

The LM22676QTJ-5.0/NOPB also offers a range of protection features. These include over-current protection, over-voltage protection, under-voltage protection and short-circuit protection. The device also features a wide range of output capabilities, including a dynamic response range that can support up to 30% load transitions in only 30µs. It also offers a power good signal to indicate when the device is in regulation. This eliminates the need for manual reset in some advanced designs.

In terms of ease of implementation, the LM22676QTJ-5.0/NOPB offers a range of options for customizing the operation of the converter. Through easy programming, the output voltage, over-current and over-voltage protection levels, and frequency can be adjusted as per the user\'s requirements. Additionally, the converter\'s output can be monitored through a built-in ADC or monitored via an I2C/PMBus interface.

In conclusion, the LM22676QTJ-5.0/NOPB is an extremely efficient and cost-effective solution for a variety of power supply applications. It provides an improved response time while saving on external component count and requires minimal programming to achieve maximum power transfer efficiency. This makes it suitable for a range of different usage scenarios and offers a highly reliable underlying technology for a range of advanced designs.

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