LTC4252BCMS-2#PBF

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The LTC4252BCMS-2#PBF is a hot-swap controller for use in PMIC applications. It features active current limiting for either low-side or high-side devices, allowing safe protected insertion of boards into live backplanes. The part provides protection against overvoltage, overtemperature, and reverse current. This ensures reliable, safe operation under a range of conditions, including in-rush current at start-up and brown-out conditions. This makes the LTC4252BCMS-2#PBF suitable for a wide variety of PMIC applications, ranging from micro-controller boards, to communications equipment, industrial control systems and networked devices.

The LTC4252BCMS-2#PBF is capable of controlling two independent hot-swap channels and featuring active current limiting, making it suitable for powering large modules such as FPGAs, or powering and monitoring small modules. Depending on the application, the device can be configured to either limit current, dynamically turn on and off, or to cause a fault condition if the current limit is exceeded. In addition, the device can be configured to pull down the hot-swap enable line when the adjustable current threshold is exceeded.

The device is also capable of shutting down when an over-temperature condition is detected. The part is built on a proprietary thin film MOSFET process, with a true 4-quadrant power path architecture. This allows for low channel-to-channel voltage mismatch, low self-heating, and fast channel-to-channel current balance. The device utilizes a clock-driven square wave turn-on/off sequence to minimize in-rush current at start-up. This eliminates the need for an external soft-start circuit.

To further ensure reliable operation, the LTC4252BCMS-2#PBF offers reverse current and overvoltage protection. The device features adjustable soft start, adjustable current sensing, and adjustable temperature sensing, allowing the user to control the current, power and temperature conditions precisely. The device also features protection for low-voltage and reverse voltage conditions. This ensures safe operation under a wide range of conditions.

The LTC4252BCMS-2#PBF can be programmed to either limit current, dynamically turn on and off, or to cause a fault condition if the limit is exceeded. The device\'s clock driven turn-on and off sequence ensures reliable operation at start-up, eliminating the need for an external soft-start circuit. The device is also capable of sensing and limiting inrush current, and is equipped with adjustable soft start and adjustable current sensing. This makes the part an ideal choice for reliable and safe power management in PMIC applications.

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