LM4132EMF-3.0

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The TI LM4132EMF-3.0 is a high-performance and high-speed low-dropout (LDO) linear regulator. It features a low quiescent current, fast transient response, wide input voltage range, and an adjustable output voltage. The integrated overcurrent and thermal protection features give it excellent safety. The LM4132EMF-3.0 is part of TI’s family of ultra-low-power voltage regulators, which are designed to meet the challenges of portable designs with their excellent power efficiency and very low quiescent current.

Application Field and Working Principle

The LM4132EMF-3.0 is a surface mount linear regulator which is used for power supply of audio, video and general purpose circuits, especially for battery-powered systems where low power consumption and low dropout voltage is required. It is available in an industry-standard SOT-23-6 package and rated over a -40℃ to +125℃ temperature range. The device incorporates a P-Channel MOSFET pass transistor and provides a low quiescent current, wide input voltage range and adjustable output voltage.

The working principle of the voltage regulator is based on the phenomenon called negative feedback. The output voltage is regulated by sensing the voltage difference between the regulated output and the reference voltage. This reference voltage is compared to the output voltage, and the resulting error signal is used to adjust the output voltage in order to make it equal to the reference voltage. The amount of adjustment is determined by the :feedback gain:.

The error signal is then used to control the output voltage. The LM4132EMF-3.0 uses a P-channel MOSFET pass transistor which allows for a high output current and low dropout voltage. The integrated thermal/over-current protection prevents the device from overheating or exceeding its rated current, ensuring system safety. In addition, it includes a shutdown toggle pin, allowing the device to be shut down easily if need be.

The LM4132EMF-3.0 is a great solution for low power and portable designs, thanks to its low quiescent current, fast transient response, wide input voltage range and adjustable output voltage, as well as its integrated safeguards. It is a high-performance and high-speed low-dropout (LDO) linear regulator and thus is ideal for use in audio, video and general purpose circuits, especially in battery-powered systems.

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