UCC2919DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC2919DG4 is a single-channel hot-swap voltage controller for 3–8 V bus systems with adjustable current and voltage thresholds, housed in a 16-pin SOP package. Protects live-insertion boards from inrush current and short-circuit faults.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UCC2919DG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UCC2919DG4?
- Single-channel hot-swap controller covering 3 V to 8 V supply rails with adjustable overcurrent and undervoltage thresholds
- Adjustable current limit via external sense resistor enables precise inrush control for board current ratings from milliamps to tens of amps
- Industrial temperature range rating in a standard 16-pin SOP footprint simplifies replacement and board layout in rack and telecom systems
What is UCC2919DG4 used for?
The UCC2919DG4 is designed for telecom and server blade systems where add-in cards must be inserted and removed without powering down the backplane, controlling inrush current on 3.3 V or 5 V supply rails to prevent bus voltage droop. It is also used in industrial PLC expansion racks, network switches, and storage enclosures where board-level short-circuit and overcurrent protection on a 3–8 V supply bus is required without interrupting operation of adjacent cards.
What are the specifications of UCC2919DG4?
| Pbfree Code | No |
| 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 | INDUSTRIAL |
| 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 UCC2919DG4 datasheet?
UCC2919DG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC2919DG4?
Compatible alternatives and drop-in replacements for UCC2919DG4:
Unitrode Corporation Fixed, 1 Channel, BICMOS, PDSO16
Frequently Asked Questions
What supply voltage range does the UCC2919DG4 support for hot-swap control applications?
The UCC2919DG4 operates on bus voltages from 3 V to 8 V, covering common system rails including 3.3 V, 5 V, and intermediate voltages used in telecom and industrial backplane designs. This range allows a single controller IC to protect multiple rail types across a product family without redesigning the hot-swap circuit.
How does the UCC2919DG4 limit inrush current when a board is inserted into a live backplane?
The controller uses an external N-channel power MOSFET and a current-sense resistor to form an active current-limiting circuit. When insertion is detected, the gate voltage ramps up at a controlled rate, slowing the rate of rise of the supply current. The adjustable threshold, set by the sense resistor value and a programming pin, keeps the peak inrush below a designer-defined limit, typically 2 A to 20 A depending on board capacitance and target protection level.
What protection features does the UCC2919DG4 provide beyond inrush current limiting?
Beyond inrush control, the UCC2919DG4 provides overcurrent fault detection that turns off the external MOSFET within microseconds if the load current exceeds the programmed threshold, preventing damage to both the board being inserted and the 3–8 V supply bus. Undervoltage lockout prevents the MOSFET from turning on until the supply rail is above a valid operating level, avoiding partial-power brownout conditions during board insertion.
In a 5 V server blade system, why would an engineer choose the UCC2919DG4 over a simple fuse for board-level protection?
A fuse is a one-time protection element rated for a fixed current, often 5 A or higher to avoid nuisance trips, which means a short-circuit drawing 3 A could run undetected for seconds. The UCC2919DG4 actively monitors current on every insertion event, clamps inrush to a programmable limit, and latches the MOSFET off within microseconds of a fault, protecting both the 5 V bus and downstream components without requiring a technician to replace a blown fuse before the system can resume operation.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit