LTC4218
RECOMMENDED FOR NEW DESIGNSHot Swap Controller
- Part Models
- 8
- 1ku List Price
- Starting From $4.04
Overview
- Wide Operating Voltage Range: 2.9V to 26.5V
- Adjustable, 5% Accurate 15mV Current Limit
- Current Monitor Output
- Adjustable Current Limit Timer Before Fault
- Power Good and Fault Outputs
- Adjustable Inrush Current Control
- 2% Accurate Undervoltage and Overvoltage Protection
- Available in 16-Lead SSOP and 16-Pin 5mm × 3mm DFN Packages
The LTC4218 is a Hot Swap controller that allows a board to be safely inserted and removed from a live backplane. An internal high side switch driver controls the gate of an external N-channel MOSFET for supply voltages from 2.9V to 26.5V. A dedicated 12V version (LTC4218-12) contains preset 12V specific thresholds, while the standard LTC4218 allows adjustable thresholds.
The LTC4218 provides an accurate (5%) current limit with current foldback limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that amplifies the sense voltage for ground referenced current sensing. Overvoltage, undervoltage and power good monitoring are also provided.
Applications
- RAID Systems
- ATCA, AMC, μTCA Systems
- Server I/O Cards
- Industrial
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Product Selector Card 2
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 |
|---|---|---|---|
| LTC4218CDHC-12#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC4218CDHC-12#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC4218CGN#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4218CGN#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4218IDHC-12#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC4218IDHC-12#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC4218IGN#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4218IGN#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC4218CDHC-12#PBF | PRODUCTION | |
| LTC4218CDHC-12#TRPBF | PRODUCTION | |
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC4218CGN#PBF | PRODUCTION | |
| LTC4218CGN#TRPBF | PRODUCTION | |
| LTC4218IGN#PBF | PRODUCTION | |
| LTC4218IGN#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package |
||
| LTC4218CGN#PBF | PRODUCTION | |
| LTC4218CGN#TRPBF | PRODUCTION | |
| LTC4218IGN#PBF | PRODUCTION | |
| LTC4218IGN#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG] |
||
| LTC4218CGN#PBF | PRODUCTION | |
| LTC4218CGN#TRPBF | PRODUCTION | |
| LTC4218IGN#PBF | PRODUCTION | |
| LTC4218IGN#TRPBF | PRODUCTION | |
|
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC4218IDHC-12#PBF | PRODUCTION | |
| LTC4218IDHC-12#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC4218
- LTC4218-12
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
LTC4218 Demo Board | 12V and 24V, 7.5A Hot Swap Controller with Current Monitoring
Resources
Latest Discussions
No discussions on LTC4218 yet. Have something to say?
Start a Discussion on EngineerZone®