UCC28500DWTR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC28500DWTR is a PFC/PWM combination controller from Texas Instruments supporting current-mode and voltage-mode operation with a 10 V to 18 V input range and -40°C to 85°C operating temperature in a 20-pin SOIC package. It integrates power factor correction and post-regulator PWM control with programmable UVLO thresholds. Available lead-free with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- UCC28500DWTR 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
Key Features
- Integrated PFC and PWM combination controller reduces component count by managing both power factor correction and post-regulation in a single IC
- Programmable current-mode and voltage-mode operation with 16 V/10 V VCC UVLO and 6.75 V/5.5 V PWM UVLO for flexible protection thresholds
- Wide input voltage range of 10.3 V to 18 V with 12 V nominal, suitable for universal AC-DC power supply front-ends
- Industrial temperature range of -40°C to 85°C in a 20-pin SOIC package with lead-free RoHS-compliant construction
Applications
The UCC28500DWTR is designed for AC-DC power supplies requiring both power factor correction and regulated DC output, including desktop computer power supplies, industrial power adapters, and telecom rectifiers. Its combination PFC/PWM architecture reduces board space and simplifies the design of high-efficiency, high-power-factor converters compliant with energy efficiency standards. The programmable UVLO thresholds and current-mode control make it well-suited for designs requiring precise startup sequencing and overload protection.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | CAN ALSO BE PROGRAMMED FOR CURRENT MODE AND VOLTAGE MODE |
| Analog IC - Other Type | POWER FACTOR CONTROLLER WITH POST REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 18V |
| Input Voltage-Min | 10.3V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1.2A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 6mA |
| Supply Voltage-Max (Vsup) | 18V |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 200kHz |
| 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 | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What functions does the UCC28500DWTR integrate?
The UCC28500DWTR integrates a power factor correction (PFC) controller and a PWM post-regulator controller in a single IC. It supports both current-mode and voltage-mode control, has programmable UVLO thresholds (16 V/10 V for VCC and 6.75 V/5.5 V for PWM), and operates over a 10.3 V to 18 V input range, making it a highly integrated solution for two-stage AC-DC power supply designs.
What does UVLO mean and how is it configured on the UCC28500DWTR?
UVLO stands for Under-Voltage Lock-Out, a protection feature that prevents the controller from operating below a minimum supply voltage. On the UCC28500DWTR, the VCC UVLO thresholds are 16 V (turn-on) and 10 V (turn-off), while the PWM UVLO thresholds are 6.75 V (turn-on) and 5.5 V (turn-off). These thresholds help ensure clean startup and controlled shutdown under low-supply conditions.
What package does the UCC28500DWTR come in?
The UCC28500DWTR is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package with JEDEC code R-PDSO-G20. It is lead-free and RoHS-compliant as indicated by the 'Pbfree Code: Yes' specification. The tape-and-reel format (TR suffix) is optimized for high-volume automated assembly using standard pick-and-place and reflow soldering equipment.
What control modes does the UCC28500DWTR support?
The UCC28500DWTR supports both current-mode and voltage-mode PWM control, which can be selected through programming. Current-mode control is the default operating mode and offers inherent cycle-by-cycle current limiting and improved transient response. Voltage-mode control provides more flexibility in compensation network design. This dual-mode capability makes the controller adaptable to a wide variety of power supply topologies.
What are typical applications for the UCC28500DWTR?
Typical applications include desktop and server power supplies, industrial AC-DC adapters, telecom power systems, and energy-efficient converters requiring active power factor correction. The integrated PFC/PWM combination reduces external component count in two-stage power supply designs. The -40°C to 85°C operating range also makes it suitable for demanding industrial environments.
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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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