UC2854BDW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments UC2854BDW is a power factor pre-regulator IC supporting 10 V to 20 V input, 115 kHz switching, 16-pin SOIC package. Implements current-mode PWM control for active power factor correction. Available worldwide with in-stock inventory.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UC2854BDW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7100(MOQ 38)
- 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 UC2854BDW?
- Current-mode PWM control for active power factor correction with programmable switching frequency up to 115 kHz
- Wide input voltage range of 10 V to 20 V with internal 18 V nominal bias operation
- 16-pin SOIC package enabling compact PCB layout in space-constrained designs
What is UC2854BDW used for?
The UC2854BDW is designed for active power factor correction stages in AC-DC switch-mode power supplies, including industrial power converters, server power units, and telecom rectifiers. By boosting power factor toward unity and reducing harmonic distortion, it helps equipment meet IEC 61000-3-2 line-harmonic emission standards. It is well suited for offline SMPS designs requiring compliance with efficiency and EMC regulations in the 100 W to 2 kW range.
What are the specifications of UC2854BDW?
| Pbfree Code | Yes |
| Date Of Intro | 1992-12-01 |
| YTEOL | 15 |
| Analog IC - Other Type | POWER FACTOR CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 10V |
| Input Voltage-Nom | 18V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1.5A |
| Output Voltage-Max | 7.6V |
| Output Voltage-Min | 7.4V |
| Output Voltage-Nom | 7.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 12mA |
| Supply Voltage-Max (Vsup) | 20V |
| Supply Voltage-Nom (Vsup) | 18V |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 200kHz |
| Technology | BIPOLAR |
| 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 |
Where can I find the UC2854BDW datasheet?
UC2854BDW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC2854BDW?
Compatible alternatives and drop-in replacements for UC2854BDW:
Power Factor Controller, Current-mode, 1.5A, 200kHz Switching Freq-Max, PDSO16
Frequently Asked Questions
What input voltage range does the UC2854BDW support for power factor correction?
The UC2854BDW operates from a 10 V to 20 V supply rail, with a nominal bias of 18 V. This range accommodates typical auxiliary winding outputs in offline AC-DC converters, making it straightforward to power the controller from the same flyback or forward stage transformer.
At what maximum switching frequency can the UC2854BDW operate the boost PFC stage?
The UC2854BDW supports a switching frequency up to 115 kHz, set by an external timing resistor and capacitor network. Operating near this frequency reduces the required boost inductor size significantly compared to 50 kHz designs, lowering overall magnetics cost and board footprint.
Which design applications benefit most from the UC2854BDW current-mode PWM control?
Industrial power supplies, server PSUs, and telecom rectifiers requiring IEC 61000-3-2 Class D harmonic compliance benefit most. The current-mode PWM technique provides inherent cycle-by-cycle overcurrent limiting and fast transient response across load steps from 20% to 100%, improving system reliability in continuously-varying load environments.
How does the 16-pin SOIC package of the UC2854BDW compare to DIP alternatives for PCB layout?
The 16-pin SOIC package measures approximately 9.9 mm x 3.9 mm, roughly 60% smaller in footprint than a 16-pin DIP, and supports automated SMT assembly at standard 1.27 mm pitch. This allows high-density PFC controller placement close to gate-drive and feedback networks, reducing parasitic inductance on critical switching nodes.
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Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 38+ | $5.3880 | $204.74 |
| 48+ | $5.2084 | $250.00 |
| 65+ | $4.6696 | $303.52 |
| 500+ | $3.0500 | $1525.00 |
| 1000+ | $2.8800 | $2880.00 |
| 10000+ | $2.7100 | $27100.00 |
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