LM3754SQX/NOPB

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The LM3754SQX/NOPB is a monolithic switching voltage regulator with an integrated high side switch. It is part of Texas Instruments\' range of precision energy-saving, low-cost, versatile controllers specifically designed for low noise and accurate operation. It belongs to the PMIC (Power Management Integrated Circuits) group of Voltage Regulators and the subcategory DC DC Switching Controllers.

The LM3754SQX/NOPB is able to deliver qualitatively clean, precise, and stable voltages with very low noise in a wide range of applications. It can be used in battery-powered circuits, such as portable electronic devices, and in step-up and step-down converters found in telecom, automotive, and industrial applications. This device can be operated over a broad input voltage range from 4.3V to 30V.

The LM3754SQX/NOPB has a wide range of features that allow it to maintain an accurate and reliable output voltage. It features a low input current limit of 4 mA for improved stability and line-transient response over the complete input voltage range. Additionally, it has a current sense amplifier and a wide voltage feedback range for high current, low voltage applications. Moreover, it includes an independent shutdown input and a programmable open drain power-good output.

The working principle of the LM3754SQX/NOPB is based on power MOSFET gate drive and a valley transition mode control. The MOSFET gate drive is activated, controlled by a high-low vector detection system, with the valley transition control enabling rapid changes in the state of the MOSFET. The device runs in forced continuous mode and continuously maintains the output voltage despite changes in the dc bus voltage.

The LM3754SQX/NOPB is designed for use in a broad range of low power, small form-factor applications. It is capable of delivering 1.8A of continuous current and 5A of peak-load current. It features a fast response time of 3μs from pulse to 25% duty cycle, enabling high output power delivery. Furthermore, it has an adjustable switching frequency ranging from 100kHz up to 1MHz and can achieve efficiencies as high as 95%.

The LM3754SQX/NOPB provides a high level of protection through a wide variety of integrated safety features, including over-voltage, peak voltage, undervoltage, over-temperature protection. This device is available in 8-pin thermally enhanced QFN with an exposed pad and operates within an ambient temperature range of -40°C to +85°C.

The LM3754SQX/NOPB is an ideal choice for a wide range of applications where high power delivery and excellent efficiency are required. It is the perfect solution for high current solutions with low noise and high precision requirements, such as portable digital devices and power-conversion circuits.

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