LTC1645IS#TRPBF - Dual Hot Swap Controller from Linear Technology

The LTC1645IS#TRPBF is a sophisticated dual hot swap controller designed by Linear Technology, now part of Analog Devices, that allows safe insertion and removal of boards in live backplanes. This component is ideal for preventing glitches on the power supply rail in high-availability systems such as servers, data centers, and telecommunications equipment, where uninterrupted operation is critical.

This controller is specifically engineered to manage electronic circuit boards' inrush currents, thereby protecting both the card and the backplane from the potentially damaging effects of sudden surges. It is capable of controlling two separate supply voltages ranging from 1.2V to 12V, which makes it versatile for various applications. The LTC1645IS#TRPBF comes in a compact 16-pin narrow SOIC package, which is suitable for space-constrained environments.

Key features of the LTC1645IS#TRPBF include:

• Independent Control: It offers independent turn-on and turn-off control of two supplies, which is essential for systems requiring sequence control for different voltage rails.
• Adjustable Current Limit: The device provides an adjustable analog current limit function, which aids in the protection of the power source and the hot-swapped board.
• Overcurrent Protection: The LTC1645IS#TRPBF has a fast-acting circuit breaker function that protects against overcurrent conditions, ensuring the integrity of the electronic system.
• Power Good Output: It includes a 'power good' output indicator for each supply, which can be used for power sequencing or as a diagnostic tool to ensure proper operation.
• High Voltage Capability: The device can withstand and control voltages up to 16.5V, providing a buffer above the maximum operating voltage for added reliability.
• Thermal Protection: It also features an over-temperature protection that shuts down the MOSFET gate voltage, preventing thermal runaway.

The LTC1645IS#TRPBF is designed for use in redundant systems where the failure of a single component cannot lead to system downtime. Its robust feature set ensures that electronic components can be safely added or removed without the risk of power supply disruption or damage. This product is a testament to Linear Technology's commitment to providing high-quality and reliable power management solutions.