UCC3917NG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
UCC3917NG4 is a single-channel positive floating hot-swap controller from Texas Instruments, enabling safe board insertion and removal on live 5 V to 72 V power buses with adjustable overcurrent thresholds. Housed in a 16-pin DIP package for commercial temperature range applications. From $2.80 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3917NG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UCC3917NG4?
- Floating architecture supports positive supply rails from 5 V to 72 V without requiring a local gate-drive supply, simplifying high-voltage hot-swap designs
- Adjustable overcurrent threshold via external resistor for precise inrush current limiting tailored to each board's capacitive load
- 16-pin DIP package with commercial temperature rating for telecom shelf and industrial rack card insertion applications
What is UCC3917NG4 used for?
UCC3917NG4 is used in telecom line cards, industrial plug-in modules, and server blades that must be inserted and removed from live backplane buses at voltages up to 72 V without disrupting other cards or damaging the board. Its adjustable current limit controls inrush current into bulk capacitors during card insertion, protecting both the backplane and the card's power supply components.
What are the specifications of UCC3917NG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | HOT SWAP CONTROLLER |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the UCC3917NG4 datasheet?
UCC3917NG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC3917NG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does UCC3917NG4 support for hot-swap control on live backplane buses?
UCC3917NG4 operates as a floating hot-swap controller over a supply range of 5 V to 72 V, covering 5 V, 12 V, 24 V, and 48 V telecom and industrial bus standards. Its floating input topology means no local bias supply is needed, simplifying board design for 48 V central-office telecom shelves where the bus voltage may vary by ±10% under load.
How does the adjustable overcurrent threshold in UCC3917NG4 protect a card during hot insertion?
The overcurrent threshold is set by an external resistor that programs the current sense comparator reference. When inrush current from charging the card's bulk capacitors exceeds the threshold—typically set 20% above steady-state maximum—the UCC3917NG4 linearly reduces the MOSFET gate voltage to clamp current, limiting the peak inrush to the programmed level. For a 1000 µF bulk capacitor on a 48 V card, this can limit the peak to below 10 A for the first 5 ms of insertion.
Which card-slot applications is UCC3917NG4 best suited for, and what are its temperature limits?
UCC3917NG4 targets commercial temperature range applications, operating from 0 °C to 70 °C ambient. It is best suited for indoor telecom line cards, data center blade servers, and industrial DIN-rail I/O modules in thermally managed enclosures. For designs requiring -40 °C to 85 °C extended industrial range, Texas Instruments offers alternative hot-swap controllers in the UCC family with wider temperature ratings.
What external MOSFET characteristics are needed when pairing with UCC3917NG4 in a 48 V hot-swap design?
For 48 V operation, the series pass MOSFET must be rated for at least 80 V drain-to-source voltage with an Rds(on) low enough to keep conduction losses below 1 W at full load current—typically below 20 mΩ for a 5 A card. The UCC3917NG4 drives the gate with a controlled slew rate that limits dV/dt to reduce EMI, and the MOSFET's gate charge should be below 100 nC for stable gate drive response during current limiting events.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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