LTC4210-3 and -4 - Hot Swap Controller in 6-Lead SOT-23 Package
Features
- Allows Safe Board Insertion and Removal from a Live Backplane
- Adjustable Analog Current Limit with Circuit Breaker
- Fast Response Limits Peak Fault Current
- Automatic Retry or Latch Off On Current Fault
- Adjustable Supply Voltage Power-Up Rate
- High Side Drive for External MOSFET Switch
- Controls Supply Voltages from 2.7V to 7V
- Undervoltage Lockout
- Adjustable Overvoltage Protection
- Low Profile (1mm) SOT-23 (ThinSOTTM) Package
Typical Application
Description
The LTC4210-3/LTC4210-4 is a 6-pin SOT-23 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 a supply voltage ranging from 2.7V to 7V. The LTC4210 provides the initial timing cycle and allows the GATE to be ramped up at an adjustable rate.
The LTC4210 features a fast current limit loop providing active current limiting together with a circuit breaker timer. The signal at the ON pin turns the part on and off and is also used for the reset function.
The LTC4210-3 retries on overcurrent fault and the LTC4210-4 latches off on an overcurrent fault.
| Vin Range | Retry / Latchoff |
|
| LTC4210-1 | 2.7V to 16.5V | Retry After Fault |
| LTC4210-2 | 2.7V to 16.5V | Latch Off After Fault |
| LTC4210-3 | 2.7V to 7V | Retry After Fault |
| LTC4210-4 | 2.7V to 7V | Latch Off After Fault |
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 |
|---|---|---|---|---|---|
| LTC4210-3CS6#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC4210-3CS6#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC4210-3CS6#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC4210-3IS6#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC4210-3IS6#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC4210-3IS6#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC4210-4CS6#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC4210-4CS6#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC4210-4CS6#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC4210-4IS6#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC4210-4IS6#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC4210-4IS6#TRPBF | SOT-23 | S6 | I | 05-08-1636 | 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 | |
|---|---|---|---|---|---|---|
| LTC4210-3CS6#PBF | SOT-23 | C | $2.06 | Yes | ||
| LTC4210-3CS6#TRMPBF | SOT-23 | C | $2.06 | $1.73 | Yes | |
| LTC4210-3CS6#TRPBF | SOT-23 | C | $1.71 | Yes | ||
| LTC4210-3IS6#PBF | SOT-23 | I | $2.75 | Yes | ||
| LTC4210-3IS6#TRMPBF | SOT-23 | I | $2.75 | $1.98 | Yes | |
| LTC4210-3IS6#TRPBF | SOT-23 | I | $1.96 | Yes | ||
| LTC4210-4CS6#PBF | SOT-23 | C | $2.06 | Yes | ||
| LTC4210-4CS6#TRMPBF | SOT-23 | C | $2.06 | $1.73 | Yes | |
| LTC4210-4CS6#TRPBF | SOT-23 | C | $1.71 | Yes | ||
| LTC4210-4IS6#PBF | SOT-23 | I | $2.75 | Yes | ||
| LTC4210-4IS6#TRMPBF | SOT-23 | I | $2.75 | $1.98 | Yes | |
| LTC4210-4IS6#TRPBF | SOT-23 | I | $1.96 | 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.Click here to view our complete list of demo boards
Applications
- Hot Board Insertion
- Electronic Circuit Breaker
- Industrial High Side Switch/Circuit Breaker
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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:
LTC4210-1
LTC4210-2
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.
