LTC4229IUFD#PBF

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PMIC (Power Management Integrated Circuit) is a vital component in electronic devices to control and monitor current and voltage, particularly for temperature and load resistance across multiple applications. Hot Swap Controllers are an important type of PMIC developed to enable safe and reliable connection/disconnection of board, cables and single board computers during system operation without interrupting the power flow. LTC4229IUFD#PBF is one of the latest hot swap controllers from Linear Technology Corporation that has been designed to provide maximum design flexibility in this type of applications.

The most important aspect of any hot swap controller is that it supports remote connection and disconnection of board, cable or system components while providing wide range of protection features. Such an application can only be achieved safely if the device has monitoring capabilities and current drive capability of positive, negative and independent rails. The LTC4229IUFD#PBF device provides such a multi-rail hot swap control and monitoring with an integrated Fault timer circuit that is configurable with different time-frames to detect overload or short circuit conditions.

The device is used in typical hot-swap applications such as to protect the power supply circuits in system boards, while providing additional features such as intelligent power sequencing and I²C monitoring. The device supports multiple current/voltage monitoring and gain limit features as well as higher fault occurrence that are configurable by a single resistor for each independent hot swap channel. The devices’ Hot-Swap circuits allow for dynamic control of devices and systems powered by the voltage bus with an n-channel MOSFET drivers for each channel, with the drivers capable of delivering up to 5A of load current in each channel.

The LTC4229IUFD#PBF device works on different principles of protection to ensure safe operation of connected components. These protection triggers are linked with the device’s voltage/current monitor block and configurable with the fault timer circuits. When the voltage/current sensor detects an overload or short circuit condition, the device initiates a fault timer or shutdown the channel depending on configuration set by the user. Furthermore, the independent hot swap channels of this device also allow for power sequencing to parallelly connected hot-swappable boards or systems, parallel or hot plug-in implementations.

In brief, the Linear Technology Corporation\'s LTC4229IUFD#PBF Hot Swap Controller is one of a new generation of devices that provide maximum design flexibility and proven features for reliable hot-swap systems. While providing an extensive array of features, such as n-channel MOSFET drivers for up to 5A load current in each channel, parallel and hot plug-in implementations, internal power sequencing and configurable fault timer circuit, this PMIC is optimized for use in applications where reliable connection and disconnection of board, single board computers or cables during system operation is crucial for operation and safety.

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