UCC3817ADG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC3817ADG4 is a current-mode Power Factor Pre-Regulator Controller IC from Texas Instruments, operating at up to 115 kHz switching frequency with a 10.3 V to 15 V supply input in a 16-pin SOIC surface-mount package. Available from authorized distributors with competitive pricing and worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3817ADG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Average current-mode control architecture achieves near-unity power factor correction in boost PFC pre-regulator designs for offline AC/DC converters
- Supports switching frequencies up to 115 kHz, enabling compact transformer and inductor designs that reduce power supply size and cost
- 16-pin SOIC surface-mount package (R-PDSO-G16) with 10.3 V to 15 V supply range simplifies PCB layout for industrial and telecom power supplies
Applications
The UCC3817ADG4 is designed for use in offline AC/DC power supplies requiring active power factor correction, such as computer SMPS, industrial power converters, and telecom rectifiers. Its average current-mode PWM control is ideal for boost PFC pre-regulator stages in two-stage converter architectures where regulatory compliance with IEC 61000-3-2 harmonic limits is required.
Specifications
| YTEOL | 0 |
| Analog IC - Other Type | POWER FACTOR CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 15V |
| 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) | 6mA |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 120kHz |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| 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 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC3817ADG4:
Power Factor Controller, Current-mode, 1.2A, 250kHz Switching Freq-Max, BICMOS, PDSO16
Power Factor Controller, Current-mode, 1.2A, 120kHz Switching Freq-Max, BICMOS, PDSO16
Power Factor Controller, Current-mode, 1.2A, 120kHz Switching Freq-Max, BICMOS, PDSO16
Power Factor Controller, Current-mode, 1.2A, 120kHz Switching Freq-Max, BICMOS, PDSO16
Power Factor Controller, Current-mode, 1.2A, 120kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
What is the maximum switching frequency of the UCC3817ADG4?
The UCC3817ADG4 supports switching frequencies up to 115 kHz. This allows designers to use smaller boost inductors and capacitors in the PFC stage, reducing overall power supply size and improving power density in space-constrained industrial and telecom applications.
What control mode does the UCC3817ADG4 use for power factor correction?
The UCC3817ADG4 uses average current-mode control with pulse width modulation (PWM). This control technique provides low total harmonic distortion (THD) and near-unity power factor in the boost PFC pre-regulator, meeting international standards such as IEC 61000-3-2 for harmonic current emissions.
What input voltage range does the UCC3817ADG4 require?
The UCC3817ADG4 requires a controller supply voltage between 10.3 V (minimum) and 15 V (maximum), with a nominal operating voltage of 12 V. In most designs, this bias supply is derived from an auxiliary winding on the boost inductor or a separate low-voltage regulator during startup.
What package does the UCC3817ADG4 come in?
The UCC3817ADG4 is available in a 16-pin SOIC surface-mount package, designated R-PDSO-G16. The SOIC package is well suited for automated SMT assembly and offers a compact PCB footprint compared to through-hole alternatives, making it a preferred choice for high-volume 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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