LTC4231HUD-1#PBF

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The LTC4231HUD-1#PBF is a hot swap controller integrated circuit designed for PolyPhase applications. It provides hot-swap protection for systems with multiple voltages, from as little as 1.2 V up to 36 V. The device also provides dynamic voltage output tracking and an adjustable automatic restart feature.

LTC4231HUD-1#PBF is ideal for operations that need to provide dynamic voltage monitoring and load control in a multi-rail power system. It features time-limited, asynchronous start-up to prevent over-current surges. Due to its low quiescent current, it has a positive environmental impact with minimized wasted power.

Application Field

The LTC4231HUD-1#PBF is suitable for a broad range of hot-swap operations. These include industrial applications that use multiple voltages through a serial communication interface. The device can ensure that the voltages do not overload the system during operation, and it can also monitor the system’s performance. Specifically, the LTC4231HUD-1#PBF can provide protection for low voltage dual-rail systems in the following applications:

• Industrial applications
• Telecommunications, networking and datacenter applications
• Medical equipment

Working Principle

The LTC4231HUD-1#PBF features both an adjustable inrush current controller and a programmable-overload current sense circuit. The adjustable inrush current controller sets the current limit during the initial start-up phase of the system, while the programmable-overload current sense circuit sets the current limit through which the system can sustain an overload of either voltage or current. The benefit of these features is that they allow the device to safely operate with load profiles that can be unpredictable.

The device features an adjustable “start-up delay” timer, which allows the system to wait for a specified duration after initial power-up before enabling the control pins and allowing current to flow. This delay can be adjusted up to one second. An adjustable “restart delay” can also be used to ensure the system does not restart immediately after an overload or short-circuit and is instead given time to cool down before restarting.

The LTC4231HUD-1#PBF also features an automatic restart circuit which allows the system to restart after an overload or short-circuit and is often used to restart large motors. This device can be set to detect the system’s voltage and restart the system when the voltage reaches its working level. This helps to ensure the system remains operational in the event of a short-circuit, overload or other fault.

Conclusion

LTC4231HUD-1#PBF is an ideal hot swap controller for operations that require dynamic voltage monitoring and load control in a multi-rail power system. Its adjustable inrush current controller, programmable-overload current sense circuit and automatic restart feature ensure safe operation and offer flexibility for manual and automated systems. The device is suitable for a broad range of industrial, telecommunications, networking and medical applications, making it a versatile and reliable hot swap controller.

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