LTC4242CG#PBF

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LTC4242CG#PBF is a two-channel current-limiting and hot-swap controller with power-OK and overtemperature flags. The device acts as a Hot Swap™ controller, allowing the board to be safely inserted and removed from a live backplane. This product family protects against both undercurrent and overcurent conditions. It also provides an adjustable low-current trip level, adjustable timer, and overtemperature flag to support system level hot-swap functions.

The application field of LTC4242CG#PBF is mainly used in military/aerospace, telecom/datacom, industrial, low-voltage board-level, and portable applications. The LTC4242CF#PBF is specifically designed for industrial systems where -40°C to 85°C operation is required. Applications include hot-swap control for power supplies, hard drives, routers, bridges, scientific instruments, point-of-sale systems, and many more.

The basic working principle of the LTC4242CG#PBF is as follows: When an AC or DC voltage is applied, the controller’s output is active and the load may be powered. When the amount of current in the load exceeds the current set by the sense resistor, the device switches the output to the OFF state. In addition, the device features an adjustable timer, allowing a safe startup sequence and preventing false tripping. It also features a power-OK flag, keeping the user informed on whether sufficient current is flowing to the load.

The LTC4242CG#PBF provides power management and protection in a single-package solution. It is designed to deliver superior circuit board layouts and minimize component count. The device employs a high-speed P-channel MOSFET for its power switch, and is rated for 40A of continuous current and up to a 100V operating range. A built-in overtemperature flag indicates when the device exceeds a set temperature limit. Its small size and low component count make it ideal for use in space-constrained designs.

The LTC4242CG#PBF offers a robust and reliable solution for hot-swap applications. Its adjustable current limit and timer give the user flexibility in setting desired thresholds. The overtemperature flag also ensures that the device does not become damaged in the event of unexpected temperatures. With its high current ratings and wide operating range, the LTC4242CG#PBF is the perfect choice for today’s industrial, automotive, and consumer electronic designs.

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