LT1170CT#PBF

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The LT1170CT#PBF is a high-efficiency, monolithic synchronous step-up DC/DC converter with a continuous output current of 1A. It is widely used in numerous industries and applications, such as point-of-load regulation in industrial equipment, medical products, and power supplies. This article will discuss the application field, working principle and features of LT1170CT#PBF.

This device is a monolithic integrated circuit, belonging to the family of DC/DC switching regulators and is specifically a step-up converter. It can be used to convert a low DC voltage to a higher DC voltage, enabling the efficient transfer of power from one source to another. In this case the input voltage range of LT1170CT#PBF is 3.1 to 15V and the output voltage range is 5 to 20V, making it suitable for many applications that require higher voltage levels.

When it is used as a voltage converter, LT1170CT#PBF operates in a synchronous topology, which means that both the energy transfer switches are operating simultaneously. It has an internal switch resistance of 7mΩ which is low compared to other devices and allows it to operate in a high efficiency range with minimal power losses.

The LT1170CT#PBF switches its internal energy transfer switch at a fixed frequency (200kHz) which is set by an internal oscillator. It also enables the system to be accurately controlled and operated. The device can be operated in either voltage mode or current mode. In voltage mode, the user sets the output voltage through an external resistor divider, and the current limit is set by an external resistor for accurate current control. In current mode, the output voltage is proportional to the peak switch current which is set by an external resistor.

LT1170CT#PBF also includes an internal power switch, current limit and thermal shutdown circuit, as well as overvoltage and short-circuit protection to prevent over-voltage, over-current, and thermal runaways. It also has a low quiescent current of 2mA and an adjustable soft start feature. This feature reduces inrush current during start up and eliminates output overshoot.

LT1170CT#PBF is suitable for a variety of applications including consumer electronics, automotive, communication and industrial electronic products. As a result, it is widely used in computers, PDAs, video projectors, digital TVs, personal music systems, automotive infotainment systems, phones, telecom switches, and industrial control systems. It is also ideal for point-of-load regulation, where a continuous high current output is required.

In summary, the LT1170CT#PBF offers excellent current and voltage performance in a wide range of applications due to its low switch resistance and its synchronous output architecture. Its high efficiency makes it ideal for energy conversion applications, while its Thermal Shutdown, low quiescent current, current limit, and overvoltage protection allows it to operate safely even under extreme conditions. As a result, the LT1170CT#PBF is a reliable and versatile device, suitable for a variety of applications.

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