LTC4215-1
LTC4215-3
RECOMMENDED FOR NEW DESIGNS
Hot Swap Controller with I2C Compatible Monitoring
- Part Models
- 8
- 1ku List Price
- Starting From $5.43
Overview
- Allows Safe Insertion into Live Backplane
- 8-Bit ADC Monitors Current and Voltage
- I2C/SMBus Interface
- Wide Operating Voltage Range: 2.9V to 15V
- dI/dt Controlled Soft-Start
- Circuit Breaker Timeout: 20μs (LTC4215-1) or 420μs (LTC4215-3)
- Three General Purpose Outputs
- High Side Drive for External N-channel MOSFET
- No External Gate Capacitor Required
- Input Overvoltage/Undervoltage Protection
- Optional Latch-off or Auto-Retry After Faults
- Alerts Host After Faults
- Inrush Current Limit with Foldback
- Available in 24-Pin (4mm × 5mm) QFN
The LTC4215-1/LTC4215-3 Hot Swap™ controllers allow a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, board supply
voltage and inrush current are ramped up at an adjustable rate. An I2C interface and on-board ADC allow for monitoring of load current, voltage and fault status.
The device features adjustable foldback current limit and a soft-start pin that sets the dI/dt of the inrush current. An I2C interface may configure the part to latch-off or automatically restart after the LTC4215-1/LTC4215-3 detect a current limit fault.
The controller has additional features to interrupt the host when a fault has occurred, provide three general purpose outputs, notify when output power is good, detect insertion of a load card, and power-up either automatically upon insertion or wait for an I2C command to turn on.
The LTC4215-1 has a 20μs circuit breaker filter for applications that require a fast fault response time. The LTC4215-3 has an extended 420μs circuit breaker filter for applications where supply transients may exceed 20μs.
| Circuit Breaker Timeout | General Purpose Outputs | |
| LTC4215 | 20μs | 1 |
| LTC4215-1 | 20μs | 3 |
| LTC4215-2 | 420μs | 1 |
| LTC4215-3 | 420μs | 3 |
Applications
- Live Board Insertion
- Electronic Circuit Breakers
- Computers, Servers
- Platform Management
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 |
|---|---|---|---|
| LTC4215CUFD-1#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215CUFD-1#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215CUFD-3#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215CUFD-3#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IUFD-1#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IUFD-1#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IUFD-3#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IUFD-3#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Hot Swap Controllers 1 | ||
| LTC4280 | RECOMMENDED FOR NEW DESIGNS | Hot Swap Controller with I2C Compatible Monitoring |
| Interface Transceivers 1 | ||
| LTM2883 | PRODUCTION | SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power |
| Temperature Sensors 1 | ||
| LTC2990 | RECOMMENDED FOR NEW DESIGNS | Quad I2C Voltage, Current and Temperature Monitor |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC4215
- LTC4215-1
- LTC4215-2
- LTC4215-3
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
LTC4215-1 Hot Swap Controller with ADC and 3 GPIO (requires DC590)
Resources
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