LTC4241CGN#PBF

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PMIC - Hot Swap Controllers

The LTC4241CGN#PBF is a low-voltage, high-current hot swap controller with integrated MOSFET, ideal for controlling and protecting the power of AC-DC, DH-DC and telecom applications. It is specifically designed to provide autonomous hot swap control and protection for microprocessors, FPGAs and other sensitive digital circuitry from inactive or failed power supplies. This device ensures proper hot-swap control and transient load protection without the need for a separate load-switching circuit or external microcontroller.

Features and Benefits

The LTC4241CGN#PBF comes with a wide range of features to ensure reliable operation and to suit the various needs of different applications. These features include:

• Dynamic inrush current limiting
• Programmable inrush current limit
• Programmable current limit
• Programmable voltage limit
• Integrated MOSFET
• Hiccup programmable overtemperature circuit
• PwrFail comparator
• Integrated reverse charge diode
• Programmable sequence control of inrush current and power-on reset

Application Field

The LTC4241CGN#PBF is ideal for a broad range of AC-DC, DH-DC and telecom applications. It is well suited for hotswapping data storage, processor/microcontroller controllers, communications/networking processors and FPGAs. In addition, it is widely used in applications such as hot swap control, current limiting and inrush control, power supply sequencing, and various other power protection applications.

Working Principle

The LTC4241CGN#PBF works by monitoring an external voltage, current, or temperature sense. On power-up, it controls the charging current to the load to prevent an inrush current from damaging the system. The inrush current limit is programmable via a single external resistor. Furthermore, the LTC4241CGN#PBF monitors the output voltage and current, and provides power-up and power-down sequencing and overcurrent protection features.

The LTC4241CGN#PBF also features a reverse-charge diode that prevents reverse current flow from the load back to the supply, allowing for proper sequencing of symmetrical power sources. In addition, it provides a number of protection features, including over-voltage, over-temperature, and under-voltage protection. When any of these conditions are detected, the device will shut down the power to the load until the fault condition is corrected.

Conclusion

The LTC4241CGN#PBF is an ideal hot-swap controller for controlling and protecting the power of AC-DC, DH-DC and telecom applications. It provides a number of features, including inrush current limiting, programmable current and voltage limiting, integrated MOSFET, hiccup programmable over-temperature circuit and PwrFail comparator, as well as integrated reverse-charge diode. With these features, the LTC4241CGN#PBF is well suited for a broad range of applications, from data storage to communications and networking applications.

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