LTC4224-1/LTC4224-2 - Compact Dual Low Voltage Hot Swap Controller
Features
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC4224 Dual Low Voltage Hot Swap™ controller allows a board to be safely inserted and removed from a live backplane. It controls two supplies with external N-channel MOSFETs and operates with one supply as low as 1V provided the other supply is 2.7V or greater. The LTC4224 can ramp up the supplies in any order and at adjustable ramp rates. To minimize the number of external components and PCB area, the gate capacitor is optional, all timing delays are generated internally, and the ON pins have integrated pull-up currents.Protection against overcurrent faults is provided by a fast- acting current limit and timed circuit breakers. A FAULT pin signals overcurrent faults. The LTC4224-1 remains off after a fault, while the LTC4224-2 automatically tries to apply power again after a four second cool-down period.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC4224CDDB-1#PBF | 3x2 DFN-10 | DDB | C | 05-08-1722 | Yes |
| LTC4224CDDB-1#TRMPBF | 3x2 DFN-10 | DDB | C | 05-08-1722 | Yes |
| LTC4224CDDB-1#TRPBF | 3x2 DFN-10 | DDB | C | 05-08-1722 | Yes |
| LTC4224CDDB-2#PBF | 3x2 DFN-10 | DDB | C | 05-08-1722 | Yes |
| LTC4224CDDB-2#TRMPBF | 3x2 DFN-10 | DDB | C | 05-08-1722 | Yes |
| LTC4224CDDB-2#TRPBF | 3x2 DFN-10 | DDB | C | 05-08-1722 | Yes |
| LTC4224CMS-1#PBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC4224CMS-1#TRPBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC4224CMS-2#PBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC4224CMS-2#TRPBF | MS-10 | MS | C | 05-08-1661 | Yes |
| LTC4224IDDB-1#PBF | 3x2 DFN-10 | DDB | I | 05-08-1722 | Yes |
| LTC4224IDDB-1#TRMPBF | 3x2 DFN-10 | DDB | I | 05-08-1722 | Yes |
| LTC4224IDDB-1#TRPBF | 3x2 DFN-10 | DDB | I | 05-08-1722 | Yes |
| LTC4224IDDB-2#PBF | 3x2 DFN-10 | DDB | I | 05-08-1722 | Yes |
| LTC4224IDDB-2#TRMPBF | 3x2 DFN-10 | DDB | I | 05-08-1722 | Yes |
| LTC4224IDDB-2#TRPBF | 3x2 DFN-10 | DDB | I | 05-08-1722 | Yes |
| LTC4224IMS-1#PBF | MS-10 | MS | I | 05-08-1661 | Yes |
| LTC4224IMS-1#TRPBF | MS-10 | MS | I | 05-08-1661 | Yes |
| LTC4224IMS-2#PBF | MS-10 | MS | I | 05-08-1661 | Yes |
| LTC4224IMS-2#TRPBF | MS-10 | MS | I | 05-08-1661 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC4224CDDB-1#PBF | 3x2 DFN-10 | C | $3.48 | Yes | ||
| LTC4224CDDB-1#TRMPBF | 3x2 DFN-10 | C | $3.48 | $2.45 | Yes | |
| LTC4224CDDB-1#TRPBF | 3x2 DFN-10 | C | $2.40 | Yes | ||
| LTC4224CDDB-2#PBF | 3x2 DFN-10 | C | $3.48 | Yes | ||
| LTC4224CDDB-2#TRMPBF | 3x2 DFN-10 | C | $3.48 | $2.45 | Yes | |
| LTC4224CDDB-2#TRPBF | 3x2 DFN-10 | C | $2.40 | Yes | ||
| LTC4224CMS-1#PBF | MS-10 | C | $3.48 | $2.40 | Yes | |
| LTC4224CMS-1#TRPBF | MS-10 | C | $2.46 | Yes | ||
| LTC4224CMS-2#PBF | MS-10 | C | $3.48 | $2.40 | Yes | |
| LTC4224CMS-2#TRPBF | MS-10 | C | $2.46 | Yes | ||
| LTC4224IDDB-1#PBF | 3x2 DFN-10 | I | $3.99 | Yes | ||
| LTC4224IDDB-1#TRMPBF | 3x2 DFN-10 | I | $3.99 | $2.81 | Yes | |
| LTC4224IDDB-1#TRPBF | 3x2 DFN-10 | I | $2.76 | Yes | ||
| LTC4224IDDB-2#PBF | 3x2 DFN-10 | I | $3.99 | Yes | ||
| LTC4224IDDB-2#TRMPBF | 3x2 DFN-10 | I | $3.99 | $2.81 | Yes | |
| LTC4224IDDB-2#TRPBF | 3x2 DFN-10 | I | $2.76 | Yes | ||
| LTC4224IMS-1#PBF | MS-10 | I | $3.99 | $2.81 | Yes | |
| LTC4224IMS-1#TRPBF | MS-10 | I | $2.82 | Yes | ||
| LTC4224IMS-2#PBF | MS-10 | I | $3.99 | $2.76 | Yes | |
| LTC4224IMS-2#TRPBF | MS-10 | I | $2.82 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1364A-A | LTC4224-1 Demoboard: Dual Low Voltage Hot Swap Controller with Latchoff | $75.00 | |
| DC1364A-B | LTC4224-2 Demoboard: Dual Low Voltage Hot Swap Controller with Auto-Retry | $75.00 | |
| Buy Now | |||
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC4224IDDB-1#PBF | 3x2 DFN-10 | I | $3.99 | Yes | ||
| LTC4224IDDB-1#TRMPBF | 3x2 DFN-10 | I | $3.99 | $2.81 | Yes | |
| LTC4224IDDB-1#TRPBF | 3x2 DFN-10 | I | $2.76 | Yes | ||
| LTC4224IDDB-2#PBF | 3x2 DFN-10 | I | $3.99 | Yes | ||
| LTC4224IDDB-2#TRMPBF | 3x2 DFN-10 | I | $3.99 | $2.81 | Yes | |
| LTC4224IDDB-2#TRPBF | 3x2 DFN-10 | I | $2.76 | Yes | ||
| LTC4224IMS-1#PBF | MS-10 | I | $3.99 | $2.81 | Yes | |
| LTC4224IMS-1#TRPBF | MS-10 | I | $2.82 | Yes | ||
| LTC4224IMS-2#PBF | MS-10 | I | $3.99 | $2.76 | Yes | |
| LTC4224IMS-2#TRPBF | MS-10 | I | $2.82 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Optical Networking
- Low Voltage Hot Swap
- Electronic Circuit Breakers
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC4224-1
LTC4224-2
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
