LTC4242
RECOMMENDED FOR NEW DESIGNSDual Slot Hot Swap Controller for PCI Express
- Part Models
- 8
- 1ku List Price
- Starting From $5.01
Overview
- Allows Live Insertion into PCI Express® Backplane
- Controls Two Independent PCI Express Slots
- Independent Control of Main and Auxiliary Supplies
- 20V Rating for 12V Supply Input Pins
- Integrated 0.25Ω AUX Switches
- Limits Fault Current in ≤1µs
- Force On Test Mode
- Adjustable Supply Voltage Power-Up Rate
- High Side Drivers for N-Channel MOSFETs
- Thermal Shutdown Protection
- Available in 38-Lead QFN and 36-Lead SSOP Packages
The LTC4242 Hot Swap™ controller allows safe board insertion and removal for two independent slots on a PCI Express backplane. External N-channel transistors control the 12V and 3.3V supplies while integrated switches control the 3.3V auxiliary supplies. Both 12V and 3.3V supplies can be ramped up at an adjustable rate. Dual level circuit breakers and fast active current limiting protect all supplies against overcurrent faults.
A supply filter at the VCC pin allows the LTC4242 to endure supply transients. The EN input detects the presence of a card in the PCI Express slot. The FAULT and AUXFAULT outputs alert the system of overcurrent conditions on the main and auxiliary supplies, respectively. PGOOD and AUXPGOOD outputs indicate proper main and auxiliary supply outputs.
Applications
- PCI Express-Based PC and Servers
- Hot Swap Application for Triple Supply Systems
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 |
|---|---|---|---|
| LTC4242CG#PBF | 36-Lead SSOP | ||
| LTC4242CG#TRPBF | 36-Lead SSOP | ||
| LTC4242CUHF#PBF | 38-Lead QFN (5mm x 7mm w/ EP) | ||
| LTC4242CUHF#TRPBF | 38-Lead QFN (5mm x 7mm w/ EP) | ||
| LTC4242IG#PBF | 36-Lead SSOP | ||
| LTC4242IG#TRPBF | 36-Lead SSOP | ||
| LTC4242IUHF#PBF | 38-Lead QFN (5mm x 7mm w/ EP) | ||
| LTC4242IUHF#TRPBF | 38-Lead QFN (5mm x 7mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Nov 18, 2019 - 19_0266 Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC |
||
| LTC4242CG#PBF | PRODUCTION | |
| LTC4242CG#TRPBF | PRODUCTION | |
| LTC4242IG#PBF | PRODUCTION | |
| LTC4242IG#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC4242
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
DC1054A with DC1054B | LTC4242 Dual PCI Express Hot Swap Controller