LTC1261IS8#PBF

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The LTC1261IS8#PBF is a low cost, low quiescent current DC-DC switching regulator from Linear Technology, which offers improved efficiency and accuracy compared to traditional linear regulators. It is suitable for a wide range of applications, including automotive, industrial and communications systems. This article will discuss the application fields and working principles of the LTC1261IS8#PBF.

Application Fields:

The LTC1261IS8#PBF is a very versatile device, capable of powering a broad range of applications. It is designed to provide precise and efficient power conversion for a variety of applications, including automotive electronics, industrial automation, medical devices, communications equipment, consumer electronics, instrumentation, and many more. The device has a wide input voltage range of 2.7V to 42V and a low quiescent current of 115µA.

The LTC1261IS8#PBF also offers a wide range of features for providing reliable power to its applications. It includes short-circuit protection, thermal shutdown, over-voltage protection, power good indicator, and adjustable output voltage. It also has a low output ripple and noise, making it ideal for powering precision circuitry. Finally, the device is fully tested for EMC compliance and carries a variety of approvals, including AEC-Q100, CSA, and UL.

Working Principle:

The LTC1261IS8#PBF is a DC-DC switching regulator with a switching frequency of up to 1.2MHz. It employs a synchronous buck topology to efficiently convert its input voltage to its output voltage. This type of regulation technique allows the device to have improved efficiency compared to linear regulators. The device also uses a Pulse Frequency Modulation (PFM) technique to control its output voltage during light load conditions, further improving its efficiency and accuracy. In addition, the device features a Frequency Foldback (FF) protection for improved protection against excessive input voltage or current.

In order to provide tight output voltage regulation, the device includes a feedback loop. The output voltage is compared to a reference voltage and the error is then used to adjust the duty cycle of the switching pulse, which effectively adjusts the output voltage. This process is done continuously, providing accurate and reliable power regulation.

Conclusion:

The LTC1261IS8#PBF is a low cost, low quiescent current DC-DC switching regulator from Linear Technology. It is designed to provide precise and efficient power conversion for a variety of applications, including automotive electronics, industrial automation, medical devices, communications equipment, consumer electronics, instrumentation, and more. The device has a wide input voltage range of 2.7V to 42V and a low quiescent current of 115µA. It uses a synchronous buck topology and PFM technique to efficiently and accurately provide its output voltage. The device also offers a variety of features for improved protection and reliability.

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