UC3855ANG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The UC3855ANG4 is a high-performance power factor correction preregulator IC from Texas Instruments in a 20-pin DIP package, featuring current-mode PWM control with 15V to 35V input voltage range. Designed for AC-DC front-end PFC boost converters. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- UC3855ANG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC3855ANG4?
- Current-mode PWM control architecture enabling precise inductor current shaping for near-unity power factor correction in AC-DC converters
- Wide input voltage range of 15V to 35V (nominal 18V) accommodating universal AC mains rectified inputs across global voltage standards
- High-performance preregulator design with integrated gate drive suitable for continuous conduction mode boost PFC topologies
- 20-pin PDIP through-hole package offering robust connectivity and heat dissipation for industrial power supply applications
What is UC3855ANG4 used for?
The UC3855ANG4 is designed for use as the control IC in active power factor correction boost pre-regulators in AC-DC power supplies, including PC power supplies, server power units, and industrial motor drives requiring compliance with IEC 61000-3-2 harmonic current limits. Its current-mode PWM control enables high power factor (>0.99) and low total harmonic distortion (THD) across a wide load range. It is also used in UPS systems, solar inverter front-ends, and telecom rectifiers where energy efficiency and regulatory compliance are critical.
What are the specifications of UC3855ANG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | POWER FACTOR CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 35V |
| Input Voltage-Min | 15V |
| Input Voltage-Nom | 18V |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1.5A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 20mA |
| Surface Mount | NO |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 500kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| 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 | 8542.39.00.60 |
Where can I find the UC3855ANG4 datasheet?
UC3855ANG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC3855ANG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which designs are a good fit for UC3855ANG4 with 15 V to 35 V?
UC3855ANG4 fits industrial, embedded, and repair-oriented electronic assemblies when the design needs 15 V to 35 V and 35 V. It is a practical choice when the BOM also matches the 20-pin DIP footprint.
How should engineers check package compatibility for UC3855ANG4?
Compare the PCB land pattern, height allowance, and assembly process against the 20-pin DIP style. The 20 pins detail is the first check before approving a replacement.
What matters when sourcing UC3855ANG4 as a replacement?
Confirm the same 15 V to 35 V, 35 V, manufacturer traceability, and lifecycle status before substituting it. Buyers should also verify stock for the exact 20-pin DIP configuration.
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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.
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