UCC3919DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC3919DG4 is a single-channel hot-swap voltage controller from Texas Instruments for 3V to 8V bus voltages in commercial temperature applications. It features an adjustable threshold, controls an external N-channel MOSFET for inrush current limiting, and operates from a 16-pin SOIC package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3919DG4 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 UCC3919DG4?
- Single-channel hot-swap controller supporting 3V to 8V bus voltage range for safe board insertion and removal in live systems
- Adjustable overcurrent threshold via external resistor allowing precise inrush current limiting tailored to specific power supply and load requirements
- Controls an external N-channel MOSFET for efficient, low-loss power switching with minimal thermal dissipation on the controller IC
- 16-pin SOIC (R-PDSO-G16) package with plastic/epoxy construction simplifying PCB layout in telecom and server power distribution boards
- RoHS compliant and Pb-free design meeting environmental standards for use in modern electronic equipment
What is UCC3919DG4 used for?
The UCC3919DG4 is used in telecom and networking equipment to enable safe hot-plugging of line cards and modules into active backplanes operating at 3.3V or 5V. It is also deployed in server and storage systems where redundant power distribution boards require controlled inrush current to prevent bus voltage droops during board insertion. Industrial control systems and medical devices with hot-swappable I/O modules also benefit from its adjustable threshold and simple external MOSFET drive.
What are the specifications of UCC3919DG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | HOT SWAP CONTROLLER |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 1.5mA |
| Supply Voltage-Max (Vsup) | 8V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the UCC3919DG4 datasheet?
UCC3919DG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC3919DG4?
Compatible alternatives and drop-in replacements for UCC3919DG4:
Rochester Electronics LLC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
Frequently Asked Questions
What voltage range does the UCC3919DG4 support for hot-swap control?
The UCC3919DG4 supports hot-swap control for bus voltages in the range of 3V to 8V, making it compatible with common logic supply rails such as 3.3V and 5V used in telecom line cards, server boards, and industrial I/O modules.
How does the UCC3919DG4 limit inrush current during board insertion?
The UCC3919DG4 controls an external N-channel MOSFET by slowly ramping up the gate voltage, which slows the charging of bulk capacitors on the board and limits inrush current. The overcurrent threshold is adjustable via an external resistor, allowing designers to set the maximum allowable current for their specific load.
What package is used for the UCC3919DG4?
The UCC3919DG4 is housed in a 16-pin SOIC (R-PDSO-G16) package with a 0.25-inch body width and plastic/epoxy construction. The SOIC package is easy to solder and inspect, and is a common choice for power management ICs in industrial and telecom board designs.
Is the UCC3919DG4 RoHS compliant?
Yes, the UCC3919DG4 is fully RoHS compliant and lead-free (Pb-free Code: Yes, JESD-609 Code: e4), making it suitable for products that must comply with European RoHS directives and other international environmental regulations restricting hazardous substances.
What are the typical applications for the UCC3919DG4?
Typical applications include hot-pluggable telecom line cards, server and storage backplane power distribution, industrial hot-swappable I/O modules, and any system where boards must be inserted or removed from a live power bus without disrupting other subsystems or causing voltage transients.
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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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