UCC2961DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC2961DG4 is a voltage-mode PWM secondary-side controller from Texas Instruments designed for isolated power supply feedback and regulation loops. It operates from an 8.5 V to 12 V supply and is housed in a 14-pin SOIC package for compact switching power supply designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- UCC2961DG4 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 UCC2961DG4?
- Voltage-mode PWM secondary-side control for isolated SMPS feedback
- Input voltage range of 8.5 V to 12 V for flexible supply rail compatibility
- Pulse width modulation control technique enabling precise output regulation
- 14-pin SOIC package for standard SMT power supply board assembly
- RoHS-compliant e4 JESD-609 lead-free construction
- Single-function switching controller optimized for secondary-side regulation
What is UCC2961DG4 used for?
The UCC2961DG4 is deployed in the secondary-side regulation loop of isolated flyback and forward converters used in telecom power supplies, industrial SMPS, and server power modules. Its voltage-mode PWM control enables stable closed-loop output regulation when combined with an optocoupler or pulse transformer to close the feedback path across the isolation barrier.
What are the specifications of UCC2961DG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 12V |
| Input Voltage-Min | 8.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 2A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 2.8mA |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 400kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| 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 UCC2961DG4 datasheet?
UCC2961DG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC2961DG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does UCC2961DG4 require, and how does that constrain secondary-side power rail design?
UCC2961DG4 requires an input supply between 8.5 V and 12 V with a nominal operating point of 12 V, so the secondary-side auxiliary rail or bias winding in the flyback transformer must be designed to maintain output within this window across all load and line conditions.
When should an engineer choose UCC2961DG4 over a primary-side regulation approach for an isolated SMPS?
Secondary-side voltage-mode control with UCC2961DG4 is preferred when tight DC output regulation below 1% is needed, since direct output sensing at the secondary eliminates the gain error introduced by an optocoupler in primary-side regulation, particularly in 12 V industrial and telecom converter designs.
What lifecycle and sourcing risk applies to UCC2961DG4, and how should design engineers plan for it?
With a YTEOL of 0, UCC2961DG4 is at end-of-life status, meaning Texas Instruments may have ceased production. Engineers should evaluate last-time-buy options in 14-pin SOIC footprint and identify functional pin-compatible PWM secondary-side controller replacements to maintain uninterrupted power supply production.
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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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