LTC1645
PRODUCTIONDual-Channel Hot Swap Controller/Power Sequencer
- Part Models
- 8
- 1ku List Price
- Starting From $5.39
Overview
- Allows Safe Board Insertion and Removal from a Live Backplane
- Programmable Power Supply Sequencing
- Programmable Electronic Circuit Breaker
- User-Programmable Supply Voltage Power-Up and Power-Down Rate
- High Side Drivers for External N-Channel FETs
- Controls Supply Voltages from 1.2V to 12V
- Ensures Proper Power-Up Behavior
- Undervoltage Lockout
- Glitch Filter Protects Against Spurious RESET Signals
- 8- and 14-Pin SO Packages
The LTC1645 is a 2-channel Hot Swap™ controller that allows a board to be safely inserted and removed from a live backplane. Using external N-channel pass transistors, the supply voltages can be ramped at a programmable rate. Two high side switch drivers control the N-channel gates for supply voltages ranging from 1.2V to 12V. The two channels can be set to ramp up and down separately, or they can be programmed to rise and fall simultaneously, ensuring power supply tracking at the two outputs.
Programmable electronic circuit breakers protect against shorts at either output. The RESET output can be used to generate a system reset when a supply voltage falls below a user-programmed voltage. An additional spare comparator is available for monitoring a second supply voltage.
The LTC1645 is available in the 8- and 14-pin SO packages.
Applications
- Hot Board Insertion
- Power Supply Sequencing
- Electronic Circuit Breaker
Documentation
Data Sheet 1
User Guide 1
Design Note 4
Technical Articles 2
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 |
|---|---|---|---|
| LTC1645CS#PBF | 14-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1645CS#TRPBF | 14-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1645CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1645CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1645IS#PBF | 14-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1645IS#TRPBF | 14-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1645IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1645IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC1645CS#PBF | PRODUCTION | |
| LTC1645CS#TRPBF | PRODUCTION | |
| LTC1645IS#PBF | PRODUCTION | |
| LTC1645IS#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0251 Epoxy Change from Henkel 8290 to 8290A for 14-Lead SOIC Package |
||
| LTC1645CS#PBF | PRODUCTION | |
| LTC1645CS#TRPBF | PRODUCTION | |
| LTC1645IS#PBF | PRODUCTION | |
| LTC1645IS#TRPBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG] |
||
| LTC1645CS#PBF | PRODUCTION | |
| LTC1645CS#TRPBF | PRODUCTION | |
| LTC1645IS#PBF | PRODUCTION | |
| LTC1645IS#TRPBF | PRODUCTION | |
|
Nov 14, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2) |
||
| LTC1645CS8#PBF | PRODUCTION | |
| LTC1645CS8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LTC1645CS8#PBF | PRODUCTION | |
| LTC1645CS8#TRPBF | PRODUCTION | |
| LTC1645IS8#PBF | PRODUCTION | |
| LTC1645IS8#TRPBF | PRODUCTION | |
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LTC1645IS8#PBF | PRODUCTION | |
| LTC1645IS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC1645
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
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