LTC4215
LTC4215-2
RECOMMENDED FOR NEW DESIGNS
Hot Swap Controller with I2C Compatible Monitoring
- Part Models
- 12
- 1ku List Price
- Starting From $5.67
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
- 20μs (LTC4215) or 420μs (LTC4215-2) Circuit Breaker Timeout
- dI/dt Controlled Soft-Start
- 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 Package
- LTC4215 also available in 16-Lead Narrow SSOP Package
The LTC4215/LTC4215-2 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 onboard 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 detects a current limit fault.
The controller has additional features to interrupt the host when a fault has occurred, 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 has a 20μs circuit breaker filter for applications that require a fast fault response time and it defaults to latch-off after an overcurrent fault. The LTC4215-2 has an extended 420μs circuit breaker filter for applications where supply transients may exceed 20μs and it defaults to restart automatically after an overcurrent fault.
| 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
Design Note 2
Technical Articles 3
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 |
|---|---|---|---|
| LTC4215CGN#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4215CGN#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4215CUFD#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215CUFD#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215CUFD-2#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215CUFD-2#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IGN#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4215IGN#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4215IUFD#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IUFD#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IUFD-2#PBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | ||
| LTC4215IUFD-2#TRPBF | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC4215CGN#PBF | PRODUCTION | |
| LTC4215CGN#TRPBF | PRODUCTION | |
| LTC4215IGN#PBF | PRODUCTION | |
| LTC4215IGN#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package |
||
| LTC4215CGN#PBF | PRODUCTION | |
| LTC4215CGN#TRPBF | PRODUCTION | |
| LTC4215IGN#PBF | PRODUCTION | |
| LTC4215IGN#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG] |
||
| LTC4215CGN#PBF | PRODUCTION | |
| LTC4215CGN#TRPBF | PRODUCTION | |
| LTC4215IGN#PBF | PRODUCTION | |
| LTC4215IGN#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
| 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
Linduino 3
LTpowerPlay®
LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
Evaluation Kits
LTC4215 Hot Swap Controller with ADC (Requires DC590)
Resources
Reference Designs
