LTC4223CDHD-1#PBF

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PMIC - Hot Swap Controllers - LTC4223CDHD-1#PBF

The LTC4223CDHD-1#PBF is a Hot Swap Controller IC designed for protection of sensitive electronics from inrush current and short-circuit conditions. It enables safe insertion and removal of a load from a live system. This feature make LTC4223CDHD-1#PBF very useful in the application fields such as industrial, medical and automotive.

The IC includes a low impedance N-channel MOSFET to handle up to 1A of load current. It has adjustable current limit and overvoltage protection. It provides temperature monitoring of critical components on the board in order to ensure robust operation. The device is designed for operation from a single 2.7–20V supply or a dual supply between 2.7–12V. The device also has an adjustable power up and power down sequencing feature.

Working Principle:

LTC4223CDHD-1#PBF includes an internal voltage comparator, an internal driver and an external N-MOSFET. The voltage comparator compares the voltage of the load with an internally generated 0.8V threshold voltage. If the load voltage is higher than the 0.8V threshold, the N-MOSFET gate is driven compared to the load voltage, thus enabling the safe insertion and removal of the load.

The internal driver is integrated in the LTC4223CDHD-1#PBF to drive the gate of the external N-MOSFET. The N-MOSFET enables the current to flow from the source to the load, thus helping to protect the system from inrush current and short-circuit conditions. The device also has an adjustable current limit and overvoltage protection.

The device also provides temperature monitoring of critical components on the board in order to enable a robust operation. The device has an adjustable power-up and power-down sequencing feature, which ensures that the power does not get applied suddenly to the load. This feature helps to protect the load from inrush current or voltage transients.

Applications:

LTC4223CDHD-1#PBF Hot Swaps Controllers IC is useful in the following applications:

• Industrial: Hot swapping of loads while maintaining system power.
• Medical: Hot swapping of medical equipment while maintaining patient comfort.
• Automotive: Hot swapping of automotive parts and accessories while maintaining vehicle performance.

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