UC3879N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
UC3879N is a phase-shift resonant PWM controller IC from Texas Instruments supporting current/voltage-mode control, 11–20V input range, 20-pin DIP package. From $5.325, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- UC3879N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.3250(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Phase-shift resonant PWM control with both current-mode and voltage-mode support
- Wide input voltage range of 11V to 20V (nominal 12V) for flexible power supply designs
- Dual control technique: pulse width modulation combined with resonant control for high efficiency
- 20-pin DIP package (R-PDIP-T20) for easy through-hole PCB integration
- Peak current (IPK) control mode enables precise cycle-by-cycle overcurrent limiting
Applications
The UC3879N is designed for high-efficiency resonant power conversion systems such as LLC and phase-shift full-bridge DC-DC converters. It is widely used in telecom power supplies, industrial SMPS, and server power systems where soft-switching techniques are required to minimize switching losses. Its combined PWM and resonant control capability also makes it suitable for UPS systems and high-density power modules.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | ALSO HAS CONTROL MODE OF IPK, ALSO HAS CONTROL TECHNIQUE OF RESONANT |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT/VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 11V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.1A |
| Output Voltage-Max | 5.08V |
| Output Voltage-Min | 4.92V |
| Output Voltage-Nom | 5V |
| 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) | 35mA |
| Surface Mount | NO |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 300kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the UC3879N?
The UC3879N operates with an input voltage range of 11V to 20V, with a nominal operating voltage of 12V. This makes it suitable for standard 12V bus power supply designs in telecom and industrial applications.
What control modes does the UC3879N support?
The UC3879N supports both current-mode and voltage-mode control, as well as peak current (IPK) control. Its control technique combines pulse width modulation (PWM) with resonant control, enabling efficient phase-shift operation in full-bridge converter topologies.
What package type is the UC3879N available in?
The UC3879N comes in a 20-pin dual in-line package (DIP), specifically the R-PDIP-T20 package. This through-hole package is ideal for prototyping and industrial designs requiring robust mechanical mounting.
What are typical applications for the UC3879N?
The UC3879N is commonly used in phase-shift full-bridge DC-DC converters, LLC resonant converters, telecom rectifiers, server power supplies, and industrial SMPS. Its resonant control capability helps achieve zero-voltage switching (ZVS) to reduce switching losses at high frequencies.
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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 |
|---|---|---|
| 1+ | $9.2300 | $9.23 |
| 2+ | $7.1000 | $14.20 |
| 4+ | $6.1350 | $24.54 |
| 5+ | $5.3250 | $26.63 |
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