LT4363CDE-2#PBF

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Surge Suppression ICs

Surge protection circuits are an integral part of modern electronics. It is essential to protect sensitive electronics from all types of voltage spikes in order to guarantee the longevity and reliability of a product. One such circuit is the LT4363CDE-2#PBF, a high surge-current, dual bidirectional suppressor. This device and its application are discussed further in this article.

Description and Features

The LT4363CDE-2#PBF is a dual bidirectional protection diode circuit, with two built-in current limiting devices. It has fast response time to voltage spikes and is optimized for low voltage overshoot. The device is designed to absorb extremely high surge current levels up to 14 A without having an effect on the device\'s normal operating voltage. This is done through two internal diodes and two internal current-limiting devices.

This device is a four-pin surface mount device, compatible with Pb-free solder. With an operating junction temperature range of -40 °C to +125 °C, it is ideal for use in a wide variety of applications. The device is also current limited and can absorb high energy transient pulses without any fire or explosion.

Application Field

The LT4363CDE-2#PBF is widely used to protect sensitive digital and analog IC from over-voltage, over-current, and electrostatic discharge. It is commonly used in consumer and industrial applications, such as LCD and Camera modules, power supplies, in-circuit breaker systems, motor control systems, and in automotive applications.

The device is also extensively used in electronic toys, consumer electronics, telecom, data transmission systems, medical, computers and peripherals, automotive, and power line protection systems.

Working Principle

The LT4363CDE-2#PBF is designed for bidirectional protection. It has two internal current-limiting devices formed by parallel connected diodes that each sinks current in one of the directions. This device can block both low-voltage and high voltage spikes and protect the protected circuit from both polarities.

The device has two current-limiting diodes and two diodes that protect both polarities of a voltage spike. The device absorbs energy from excess voltage and current, while limiting the output current to both the positive and negative supply. The current-limiting feature helps protect the underlying circuit from being destroyed due to high-current surges.

When a voltage spike occurs, the device diverts current from the circuit and absorbs the energy. This occurs due to the two diodes that sink current in opposite directions. The current that is sunk is switched to the ground, which helps reduce the voltage spike on the input side and helps protect the underlying circuit.

In addition, the device has a low impedance internal firing circuit, which helps reduce system noise and leakage current. This is done by dissipating the charge through the internal circuitry, rather than leaking it to the circuit. This feature allows the LT4363CDE-2#PBF to provide robust surge protection and noise filtering even during periods of high levels of incoming power.

Conclusion

The LT4363CDE-2#PBF is a dual bidirectional suppressor, designed to protect sensitive electronics from voltage spikes and other potentially harmful transients. The device provides bidirectional protection and helps reduce system noise and leakage current. The device is widely used to protect various digital and analog IC in consumer and industrial applications. The device has two current limiting devices and dissipates the charge through internal circuitry to protect the underlying circuit.

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