Alternative Parts
Overview
Features and Benefits
- Allows Safe Board Insertion and Removal from a Live -48V Backplane
- Operates from -10V to -80V
- Programmable Inrush Current
- Allows 50mA of Reverse Drain Pin Current
- Programmable Electronic Circuit Breaker
- Programmable Overvoltage Protection
- Programmable Undervoltage Lockout
- Power Good Control Output
Product Details
The LT1640AL/LT1640AH are 8-pin, negative voltage Hot Swap™ controllers that allow a board to be safely inserted and removed from a live backplane. Inrush current is limited to a programmable value by controlling the gate voltage of an external N-channel pass transistor. The pass transistor is turned off if the input voltage is less than the programmable undervoltage threshold or greater than the overvoltage threshold. A programmable electronic circuit breaker protects the system against shorts. The PWRGD (LT1640AL) or PWRGD (LT1640AH) signal can be used to directly enable a power module. The LT1640AL is designed for modules with a low enable input and the LT1640AH for modules with a high enable input.
The LT1640AL/LT1640AH are available in 8-pin PDIP and SO packages.
Applications
- Central Office Switching
- -48V Distributed Power Systems
- Negative Power Supply Control
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
-
R375 Reliability Data3/22/2018
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Hot Swap Controllers8/2/2023
Product Recommendations
LT1640A Companion Parts
Recommended Related Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
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