LTC4230
RECOMMENDED FOR NEW DESIGNSTriple Hot Swap Controller with Multifunction Current Control
- Part Models
- 4
- 1ku List Price
- Starting From $5.59
Overview
- Allows Safe Board Insertion and Removal from a Live Backplane
- Controls Three Supply Voltages from 1.7V to 16.5V with VCC1 ≥ VCC2 ≥ VCC3
- Programmable Soft-Start with Inrush Current Limiting, No External Gate Capacitor Required
- Faster Turn-Off Time with No Gate Capacitor
- Dual Level Overcurrent Fault Protection
- Programmable Overcurrent Response Time
- Programmable Overvoltage Protection
- Automatic Retry or Latched Mode Operation
- Independent N-Channel FET High Side Drivers
- User-Programmable Supply Voltage Power-Up Rate
- FBn Pin Monitors VOUTn and Signals RESETn
- Glitch Filter Eliminates Spurious RESETn Signals
The LTC4230 is a 3-channel Hot Swap™ controller that allows a board to be safely inserted and removed from a live backplane. Internal high side switch drivers control the gates of external N-channel MOSFETs for supply voltages ranging from 1.7V to 16.5V. The LTC4230 provides soft-start and inrush current limiting during the programmable start-up period.
On-chip current limit comparators provide dual level circuit breaker protection. The slow comparators trip at VCCn – 50mV and activate in 10µs or are programmed by an external filter capacitor. The fast comparators trip at VCCn – 150mV and typically respond in 500ns.
Each FBn pin monitors its own output supply voltage and signals its RESET pin. The ON pin turns the chip on and off and can be used for a reset function. The LTC4230 also provides additional functions including fault indication, autoretry or latchoff modes, programmable current limit response time based on the FAULT and FILTER pins’ functionality.
Applications
- Electronic Circuit Breaker
- Hot Board Insertion and Removal (Either On Backplane or On Removable Card)
- Industrial High Side Switch/Circuit Breaker
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 |
|---|---|---|---|
| LTC4230CGN#PBF | 20-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4230CGN#TRPBF | 20-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4230IGN#PBF | 20-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4230IGN#TRPBF | 20-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC4230CGN#PBF | PRODUCTION | |
| LTC4230CGN#TRPBF | PRODUCTION | |
| LTC4230IGN#PBF | PRODUCTION | |
| LTC4230IGN#TRPBF | PRODUCTION | |
|
Aug 10, 2022 - 22_0177 Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL |
||
| LTC4230CGN#PBF | PRODUCTION | |
| LTC4230CGN#TRPBF | PRODUCTION | |
| LTC4230IGN#PBF | PRODUCTION | |
| LTC4230IGN#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTC4230
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
LTC4230 Triple Hot Swap Controller Demo Board
Resources
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