UC2854J Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
UC2854J is a Texas Instruments high power factor preregulator IC using current-mode PWM control. It operates from 15 V to 20 V input and integrates multiplier and error amplifier functions in a 16-pin DIP package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UC2854J 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
- Active power factor correction (PFC) with average current-mode control reduces input harmonic distortion
- Input voltage range of 15 V to 20 V with integrated multiplier for accurate line current shaping
- 16-pin DIP package with on-chip error amplifier, oscillator, and gate driver for complete PFC front-end
Applications
UC2854J is used as the primary power factor correction controller in AC-DC front-end stages for desktop power supplies, industrial UPS systems, and motor drive rectifiers. Its average current-mode control achieves near-unity power factor and low total harmonic distortion across wide load ranges. The 16-pin through-hole package suits both prototype builds and cost-sensitive production designs requiring robust PFC compliance.
Specifications
| 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 | 15V |
| Input Voltage-Nom | 18V |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| 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 | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 12mA |
| Supply Voltage-Max (Vsup) | 20V |
| Supply Voltage-Nom (Vsup) | 18V |
| Surface Mount | NO |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 200kHz |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC2854J:
Power Factor Controller, Current-mode, 1.5A, 200kHz Switching Freq-Max, BIPolar, PDIP16
Power Factor Controller, Current-mode, 1.5A, 200kHz Switching Freq-Max, CDIP16
Power Factor Controller, Current-mode, 1.5A, 200kHz Switching Freq-Max, BIPolar, PDIP16
Frequently Asked Questions
What input voltage range does the UC2854J support and how does it shape line current?
UC2854J operates from 15 V to 20 V bias supply voltage. Its internal multiplier uses a sample of the rectified AC line voltage to program the current reference waveform, producing near-unity power factor and keeping input THD below 5% across the full load range.
Which power supply topologies benefit most from the UC2854J average current-mode PFC control?
UC2854J is best suited for boost PFC pre-regulators in offline AC-DC converters rated from 100 W to 2 kW, including desktop PC power supplies, industrial UPS front-ends, and variable-frequency motor drive rectifiers where IEC 61000-3-2 harmonic limits must be met.
How does the 16-pin DIP package of UC2854J compare to its SOIC counterpart for board layout?
The 16-pin DIP package of UC2854J has a 2.54 mm lead pitch and a body length of approximately 19.8 mm, making it larger than a 16-SOIC. However, it allows socket mounting, simplifies hand soldering, and suits high-voltage analog layouts where creepage distances between switching nodes are a design concern.
What on-chip functions eliminate external components when using UC2854J?
UC2854J integrates a voltage error amplifier, current error amplifier, analog multiplier, PWM oscillator running up to 250 kHz, zero-current detector, and a gate drive output capable of sinking and sourcing 1 A peak, reducing the discrete component count around the PFC stage significantly.
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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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