LTC1967CMS8#TRPBF

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The LTC1967CMS8#TRPBF is a dc-dc vacuum-fluorescent display (VFD) converter with advanced features for high-frequency operation. It provides a reliable and efficient solution for driving the backlight of a VFD or liquid crystal display (LCD) in commercial, industrial, and consumer applications. The LTC1967CMS8#TRPBF is suitable for applications with both linear and areal lamps and can also be used to drive motors and other loads.

Application Field

The LTC1967CMS8#TRPBF is mainly used to power VFD and LCD backlight displays in commercial and industrial applications. As its driver IC, it offers several advantages: optimized conversion efficiency, low power consumption, superior surge protection, and low total harmonic distortion (THD). It is capable of working with several types of input voltage, ranging from 12VDC to 27VDC. Its open-circuit and short-circuit protection, along with adjustable thermal protection, helps to prevent damages to the powered device in case of fault. In addition, the IC includes a built-in over-current and soft start circuit for improved load protection.

Other than the display applications, the IC can also be used for powering motors and other types of loads like pumps, fans, and solenoids. It has both linear and switched mode of operation, which allows it to efficiently convert from a wide range (9VAC to 20VAC) of AC input voltage. With a high power density of up to 6.2 watts/in3 and a very low no-load power consumption of 10mW, the LTC1967CMS8#TRPBF is suitable for space-constrained loads, providing a reliable and safe operation.

Working Principle

The LTC1967CMS8#TRPBF works by using pulse-width modulation (PWM) to convert an incoming alternating current (AC) voltage into a direct current (DC) voltage. It is tailored for driving the backlight of LCD & VFD displays, making the lighting more uniform and efficient.

The IC works in two distinct modes, linear and switched mode. In the linear mode, it produces a linear output voltage, where the duty cycle level is directly proportionate to the input voltage. The output voltage is also proportional to the input voltage. This mode is suitable for applications that require little power but need accurate voltage control.

The switched-mode operation, on the other hand, is a more efficient way of working. It uses pulse-width modulation to control the output voltage. In this mode, the IC adjusts the pulse width so that the output voltage equals the input voltage. This allows the IC to work with a wider range of input voltages. In addition, this mode also reduces the power consumption during low-input voltage operation, thus making it suitable for applications with low-efficiency requirements.

The IC also features thermal protection and over-current protection, which makes it safe to use even in harsh conditions. It has a maximum output voltage of 45V, making it suitable for driving a variety of loads with different voltages. In addition, it also has an over-voltage and over-current protection circuit. This ensures that the device does not get damaged in case of short circuit or over-voltage situations.

The LTC1967CMS8#TRPBF is an ideal choice for driving VFD and LCD displays in commercial, industrial, and consumer applications. Its advanced features, efficient operation, and safety mechanisms make it a reliable and efficient solution for powering a variety of loads.

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