LT1640A
PRODUCTIONNegative Voltage Hot Swap Controller
- Part Models
- 12
- 1ku List Price
- Starting From $2.84
Overview
- 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
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
Documentation
Product Selector Card 1
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.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1640AHCN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1640AHCS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1640AHCS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1640AHIN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1640AHIS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1640AHIS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1640ALCN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1640ALCS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1640ALCS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1640ALIN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1640ALIS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1640ALIS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package |
||
| LT1640AHCN8#PBF | PRODUCTION | |
| LT1640AHIN8#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LT1640AHCN8#PBF | PRODUCTION | |
| LT1640AHIN8#PBF | PRODUCTION | |
| LT1640ALCN8#PBF | PRODUCTION | |
| LT1640ALIN8#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LT1640AHCN8#PBF | PRODUCTION | |
| LT1640AHIN8#PBF | PRODUCTION | |
| LT1640ALCN8#PBF | PRODUCTION | |
| LT1640ALIN8#PBF | PRODUCTION | |
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LT1640AHCS8#PBF | PRODUCTION | |
| LT1640AHCS8#TRPBF | PRODUCTION | |
| LT1640AHIS8#PBF | PRODUCTION | |
| LT1640AHIS8#TRPBF | PRODUCTION | |
| LT1640ALCS8#PBF | PRODUCTION | |
| LT1640ALCS8#TRPBF | PRODUCTION | |
| LT1640ALIS8#PBF | PRODUCTION | |
| LT1640ALIS8#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2) |
||
| LT1640AHCS8#PBF | PRODUCTION | |
| LT1640AHCS8#TRPBF | PRODUCTION | |
| LT1640AHIS8#PBF | PRODUCTION | |
| LT1640AHIS8#TRPBF | PRODUCTION | |
| LT1640ALCS8#PBF | PRODUCTION | |
| LT1640ALCS8#TRPBF | PRODUCTION | |
| LT1640ALIS8#PBF | PRODUCTION | |
| LT1640ALIS8#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1640AHCS8#PBF | PRODUCTION | |
| LT1640AHCS8#TRPBF | PRODUCTION | |
| LT1640AHIS8#PBF | PRODUCTION | |
| LT1640AHIS8#TRPBF | PRODUCTION | |
| LT1640ALCS8#PBF | PRODUCTION | |
| LT1640ALCS8#TRPBF | PRODUCTION | |
| LT1640ALIS8#PBF | PRODUCTION | |
| LT1640ALIS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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