LT4363CMS-1#PBF

Introduction

The LT4363CMS-1#PBF is a Lightning-safe Rail-to-Rail, Transient Surge Suppression IC for use in systems experiencing high lightning-induced fast-transient signals, such as cellular infrastructure. The IC provides built-in protection from high-current surge events generated at the lightning termination point, and is designed to meet IEC 61000-4-5-level surge requirements. It also provides increased insulation from lightning-induced harmonics, and can handle transients up to 1000A.

Application Field

The LT4363CMS-1#PBF is primarily used as an EMI filter for airborne EMI transient signals in radio frequencies. It is ideal for surge protection of devices like cellular base station equipment, communications systems, and any equipment that is subjected to lightning-induced high frequency fast-transient signals. The built-in insulation avoids any connection or wiring of external components.

The product has also been designed for use in areas with high levels of ambient light, such as near lightning safety systems. This is due to its ionization capability, which can be measured as feedback from the IC’s voltage drop. This voltage drop is used to prevent any large surges by reducing the incoming signal’s amplitude.

Working Principle

The LT4363CMS-1#PBF conductivity can be adjusted through its two externally adjustable resistors. The first resistor is used to set the desired amount of current flow and the second to set the desired voltage drop. When a high level transient signal is applied, the corresponding current and voltage outputs will be set to the desired values, thus protecting other equipment from high voltage or current surges. Additionally, due to the built-in insulation, any surge generated at the IC’s lightning point will be dissipated or grounded by the surge protection device.

The LT4363CMS-1#PBF also incorporates built-in clamping diodes with high voltage capability, which can help prevent induced voltage or current from interfering with communication signals. This feature ensures that communication signals remain unaltered during a high lightning surge event. The IC also includes an ESD protection device, which is designed to protect against electrostatic discharge of up to 8kV.

Conclusion

The LT4363CMS-1#PBF is an integrated Rail-to-Rail Transient Surge Suppression IC that is well-suited for high-frequency fast-transient surge protection applications. It includes built-in EMI shielding, adjustable current and voltage drop protection, and is designed to meet IEC 61000-4-5-level surge requirements. Additionally, it has an ionization capability, a clamping diode, and built-in ESD protection. The LT4363CMS-1#PBF can be used in applications such as cellular base station equipment, communications systems, and lightning safety systems.