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Overview
Features and Benefits
- Allows Safe Board Insertion and Removal from a Live Backplane
- Controls Supplies from 0V to –16V
- Adjustable Analog Current Limit With Circuit Breaker Timer
- Fast Response Time Limits Peak Fault Current
- Adjustable Soft-Start Current Limit
- Adjustable Timer with Drain Voltage Accelerated Response
- Adjustable Undervoltage/Overvoltage Protection
- LTC4214-1: Latch Off After Fault
- LTC4214-2: Automatic Retry After Fault
- Available in the 10-Pin MSOP Package
Product Details
The LTC4214 negative voltage Hot Swap™ controller allows a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current limiting: a timed circuit breaker, active current limiting and a fast feedforward path that limits peak current under worst-case catastrophic fault conditions.
Adjustable undervoltage and overvoltage detectors disconnect the load whenever the input supply exceeds the desired operating range. The LTC4214 controls negative supplies ranging from near zero to –16V. A multifunction timer delays initial start-up and controls the circuit breaker’s response time. This response time is accelerated by sensing excessive MOSFET drain voltage, keeping the MOSFET within its safe operating area (SOA). An adjustable soft-start circuit controls MOSFET inrush current at start-up. A power good status output can enable a power module at start-up or disable it if the circuit breaker trips.
The LTC4214-1 latches off after a circuit breaker fault times out. The LTC4214-2 provides automatic retry after a fault. The LTC4214 is available in the 10-pin MSOP package.
Applications
- Hot Board Insertion
- Electronic Circuit Breaker
- Negative Power Supply Control
- Central Office Switching
- High Availability Servers
- Disk Arrays
- Optical Networking/Switching
- ECL
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Documentation & Resources
-
R427 Reliability Data3/22/2018
-
Hot Swap Controllers8/2/2023
Tools & Simulations
LTspice
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.
Models for the following parts are available in LTspice:
LTC4214-1
LTC4214-2
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC4214-1CMS#PBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| LTC4214-1CMS#TRPBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| LTC4214-1IMS#PBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| LTC4214-1IMS#TRPBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| LTC4214-2CMS#PBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| LTC4214-2CMS#TRPBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| LTC4214-2IMS#PBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| LTC4214-2IMS#TRPBF | Material Declaration | Reliability Data | 10-Lead MSOP | |
| Wafer Fabrication Data | R427 Reliability Data |
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