LT1931IS5#TRMPBF

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The LT1931IS5#TRMPBF is part of a family of DC DC switching regulators. It is a monolithic step-down switching voltage regulator that can deliver up to 1.5A of continuous output current over a wide range of input voltages. It operates over input voltages from 1.8V to 36V, making it ideal for systems powered from Li-Ion, Ni-Cd, Ni-MH, 3-cell alkaline, automotive, 9V and general-purpose batteries.

The LT1931IS5#TRMPBF switching voltage regulator utilizes Pulse Width Modulation (PWM) control to provide constant output voltage. The device includes a voltage reference, error amplifier, oscillator, driver and a power FET to form a low-component-count regulator. Changing the frequency of the oscillator allows optimization of transient response and efficiency while minimizing inductor size. The oscillator frequency can also be synchronized with an external clock.

The LT1931IS5#TRMPBF supports low-rpm, low-noise operation with adjustable soft start and adjustable current limit for overload protection. The device also includes a power-good output indicator. The output voltage can be adjustable from 0.6V to 5V and the switching frequency is adjustable from 200kHz to 3MHz. Shutdown is implemented with a TTL-compatible logic input.

The LT1931IS5#TRMPBF is widely used in a variety of applications such as automotive, industrial, white goods and telecom/datacom. It can be used in applications such as point-of-load (POL) regulation, communications systems, backlighting, audio amplifiers, instrumentation, industrial controls and any other applications requiring precise, adjustable output voltages.

In automotive applications, the switching voltage regulator functions as a step-down, buck converter. It allows the power supply to be boosted up, which is necessary to ensure enough current is provided to all the applications onboard. Additionally, the adjustable voltage feature helps minimize the total voltage level required to be boosted, reducing power consumption and system temperature. The switching frequency can be adjusted to minimize the sizes of the input and output filters, helping to reduce the bill of materials and board space.

In industrial and communication applications, the switching voltage regulator is used for regulation, protection and filtering of the power supply bus. The adjustable voltage and current limit features allow for tight regulation of output voltage levels on a variety of systems, including microcontrollers, processors, and logic. The device can also filter high frequency noise from the power source, allowing for clean and reliable operation.

The LT1931IS5#TRMPBF switching voltage regulator is a low-voltage, low-power device that is well-suited for a wide range of applications. Its adjustable voltage and current limit features allows it to handle a variety of output voltages and loads, and its adjustable switching frequency allows it to operate efficiently in different conditions. It is an inexpensive yet highly-effective solution for accurate and reliable regulation in automotive, industrial and communication applications.

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