LM2588SX-3.3/NOPB

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The LM2588SX-3.3/NOPB is a monolithic DC/DC switching regulator that utilizes current-mode control. It is a three terminal regulator with high power handling capacity featuring low output current, low quiescent current, and logic level shutdown capacitor. It is designed to provide an adjustable 3.3V supply from a wide input range of 4.75V to 28V, and is capable of driving up to 1500mW of output power. It is an easy-to-use, low-cost solution for a wide variety of applications.

Features

• Low output current
• Very low quiescent current
• Logic level shutdown capacitor
• Power up sequencing capability

Applications

• Low power embedded systems
• Battery-powered systems
• Notebook computers
• Tablet PCs
• Portable instruments
• Networking
• High performance camcorders

Working Principle

The LM2588SX-3.3/NOPB consists of a power transistor, resistive divider, and voltage feedback amplifier. An internal oscillator controls the current to the power transistor, thus controlling the voltage at the output. The oscillator frequency is set via an external resistor and capacitor; this sets the switching frequency of the power transistor. The amplifier compares the output voltage to the reference voltage, and provides feedback to the oscillator.

The device has a wide range of programmable features that allow it to operate in different modes. These features include low current consumption during shutdown, logic level shutdown, programmable soft start, as well as voltage and current limiting protection. It also has a built-in thermal shutdown protection to prevent heat damage and overload protection to prevent over current and over voltage.

The LM2588SX-3.3/NOPB is well suited for applications where low cost and low noise are important factors. It is ideal for use in embedded systems, battery powered systems, notebooks, tablet PCs, portable instruments, networking and high performance camcorders.

Conclusion

The LM2588SX-3.3/NOPB is an easy-to-use, low-cost solution for a variety of applications. It is a three terminal regulator with high power handling capacity featuring low output current, low quiescent current, and logic level shutdown capacitor. Its features include low current consumption during shutdown, logic level shutdown, programmable soft start, voltage and current limiting protection, and built-in thermal shutdown protection. It is an ideal choice for embedded systems, battery powered systems, notebooks, tablet PCs, portable instruments, networking, and high performance camcorders.

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