LTC4232
RECOMMENDED FOR NEW DESIGNS5A Integrated Hot Swap Controller
- Part Models
- 4
- 1ku List Price
- Starting From $5.08
Overview
- Allows Safe Board Insertion into a Live Backplane
- Small Footprint
- 33mΩ MOSFET with RSENSE
- Wide Operating Voltage Range: 2.9V to 15V
- Adjustable, 10% Accurate Current Limit
- Current and Temperature Monitor Outputs
- Overtemperature Protection
- Adjustable Current Limit Timer Before Fault
- Power Good and Fault Outputs
- Adjustable Inrush Current Control
- 2% Accurate Undervoltage and Overvoltage Protection
- Pin Compatible with LTC4217 (DFN Package Only)
- Available in 16-Lead 5mm × 3mm DFN Package
The LTC4232 is an integrated solution for Hot Swap applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications.
The LTC4232 provides separate inrush current control and a 10% accurate 5A current limit with foldback current limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output. Thermal limit, overvoltage, undervoltage and power good monitoring are also provided. For a 2A pin compatible version, see LTC4217.
The LTC4232-1 (separate data sheet) allows faster turn-on than the LTC4232 by providing 16ms debounce delay and external control of the GATE ramp rate.
Applications
- RAID Systems, Solid State Drives
- Server I/O Cards
- Industrial
Documentation
Data Sheet 1
User Guide 1
Product Selector Card 1
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 |
|---|---|---|---|
| LTC4232CDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC4232CDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC4232IDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC4232IDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC4232
- LTC4232-1
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
LTC4232IDHC Demo Board | 5A Integrated Hot Swap Controller with 100ms Turn-On Delay
Resources
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