UCC3818APWR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
UCC3818APWR is a 220 kHz average current-mode power factor correction (PFC) controller IC in a 16-pin TSSOP package from Texas Instruments. It operates from 10.3 V to 18 V supply, uses pulse-width modulation, and is suited for AC-DC front-end designs. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UCC3818APWR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.0300(MOQ 2000)
- 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 achieves high power factor correction up to near-unity PF in AC-DC converters
- 220 kHz switching frequency enables compact magnetics and reduced filter component size
- 16-pin TSSOP (R-PDSO-G16) package simplifies layout in space-constrained AC-DC power supply designs
Applications
The UCC3818APWR is used in AC-DC power supplies requiring active power factor correction, including industrial SMPS, LED drivers, and server front-end converters. Its 10.3 V to 18 V supply range and average current-mode PWM topology comply with IEC 61000-3-2 harmonic standards. It supports designs targeting efficiency improvements and compliance in equipment rated above 75 W.
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 | 18V |
| 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 | TSSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 4mA |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 250kHz |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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
Compatible alternatives and drop-in replacements for UCC3818APWR:
Power Factor Controller, Current-mode, 1.2A, 120kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
At what switching frequency does the UCC3818APWR operate and why does this matter for PFC designs?
The UCC3818APWR operates at 220 kHz, enabling smaller boost inductors and filter capacitors in PFC stages. Higher switching frequency reduces the size of passive components required for achieving power factors above 0.99 in AC-DC supplies rated from 75 W to several kilowatts.
Which supply voltage range is required to power the UCC3818APWR control circuitry?
The UCC3818APWR requires a supply voltage between 10.3 V and 18 V, with 12 V as the nominal operating point. This typical VCC range is derived from an auxiliary winding or bias supply in AC-DC converter designs, ensuring stable bias for the PWM and error amplifier circuits.
How does the UCC3818APWR compare to non-PFC PWM controllers for AC-DC front-end design?
Unlike basic PWM controllers, the UCC3818APWR integrates average current-mode PFC control that shapes the input current to follow the AC line voltage, reducing total harmonic distortion below 5% and achieving power factors above 0.95. This eliminates the need for separate PFC pre-regulator ICs in offline supplies above 75 W.
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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 |
|---|---|---|
| 2000+ | $3.0300 | $6060.00 |
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