UCC2819DTR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments UCC2819 average current-mode power factor correction controller operating up to 250 kHz in 16-pin SOIC package. Accepts 10.3V to 17V supply and drives boost PFC stages for high-efficiency AC-DC power conversion. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UCC2819DTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.9200(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Average current-mode PWM control up to 250 kHz enabling high-frequency boost PFC with reduced inductor size and improved power factor correction
- 10.3V to 17V supply range with 12V nominal operation allowing direct bias from standard auxiliary windings in off-line power supply designs
- 16-pin SOIC package integrating oscillator, multiplier, error amplifier, and gate driver for a complete single-chip PFC controller solution
Applications
The UCC2819DTR is designed for boost-stage power factor correction in off-line AC-DC power supplies including PC power supplies, LED drivers, motor drives, and industrial UPS systems requiring compliance with IEC 61000-3-2 harmonic limits. Its average current-mode control maintains near-unity power factor across the AC line cycle, reducing line current distortion and improving efficiency in high-wattage power conversion stages. The high 250 kHz switching frequency reduces boost inductor volume, enabling compact power supply designs in space-limited enclosures.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | POWER FACTOR CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 17V |
| Input Voltage-Min | 10.3V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1.2A |
| 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) | 4mA |
| Supply Voltage-Max (Vsup) | 17V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 250kHz |
| 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 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC2819DTR:
Power Factor Controller, Current-mode, 1.2A, 250kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
What switching frequency and control mode does UCC2819DTR use for power factor correction?
UCC2819DTR implements average current-mode PWM control at switching frequencies up to 250 kHz. This combination achieves near-unity power factor in boost PFC stages by accurately shaping the input current waveform to follow the AC line voltage, reducing harmonic distortion below IEC 61000-3-2 limits for off-line power supplies above 75W.
What supply voltage range does UCC2819DTR require and how does this simplify off-line power supply design?
UCC2819DTR operates from a 10.3V minimum to 17V maximum supply with 12V nominal, allowing direct powering from auxiliary windings commonly available in off-line SMPS designs. This eliminates the need for a separate controller bias supply, simplifying the power stage BOM and reducing overall component count in AC-DC converters.
For which industrial or commercial power supply applications is UCC2819DTR the preferred PFC controller?
UCC2819DTR is well-suited for PFC front-ends in industrial UPS systems, high-wattage LED drivers, variable-frequency motor drives, and PC power supplies where IEC harmonic compliance and high efficiency are required. Its average current-mode architecture delivers stable operation across wide AC input ranges from 85V to 265V while maintaining power factor above 0.99 at full load.
How does the 250 kHz switching frequency of UCC2819DTR reduce the size of the boost PFC inductor?
Higher switching frequency allows a smaller boost inductor for the same ripple current specification. At 250 kHz versus a typical 65 kHz design, the inductor value required drops by approximately 4x, reducing both core size and winding volume. This makes the UCC2819DTR particularly suitable for compact power supplies where PCB area and enclosure height are constrained.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $3.0000 | $300.00 |
| 500+ | $2.1600 | $1080.00 |
| 1000+ | $2.0400 | $2040.00 |
| 2500+ | $1.9723 | $4930.70 |
| 5000+ | $1.9273 | $9636.30 |
| 10000+ | $1.9200 | $19200.00 |
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