UC3875NG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
UC3875NG4 is a phase shift resonant PWM controller IC from Texas Instruments, supporting current/voltage-mode control, 1 MHz operation, 20V supply range, and 500mA output drive. From $10.75 in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- UC3875NG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $10.7520(MOQ 20)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Phase shift resonant control technique for zero-voltage switching (ZVS) in high-efficiency power converters
- Supports both current-mode and voltage-mode control for flexible PWM design
- Wide input voltage range of 11V–20V with 12V nominal operation and up to 1 MHz switching frequency
- 500mA gate drive output at 2.6V enables direct MOSFET driving without external buffers
- DIP-20 package for easy prototyping and through-hole assembly in industrial applications
Applications
The UC3875NG4 is widely used in high-frequency DC-DC converters and full-bridge resonant power supplies where zero-voltage switching is critical for efficiency. It is suited for telecom power systems, server power units, and industrial SMPS designs requiring precise phase-shift PWM control. Its flexible control modes also make it a strong choice for battery chargers and motor drive auxiliary power stages.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | CAN ALSO BE CONFIGURED IN CURRENT MODE; PWM CONTROL TECHNIQUE ALSO POSSIBLE |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT/VOLTAGE-MODE |
| Control Technique | RESONANT CONTROL |
| 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 | 3A |
| 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) | 30mA |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | NO |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 1000kHz |
| 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
Compatible alternatives and drop-in replacements for UC3875NG4:
Switching Controller, Current/voltage-mode, 3A, 1000kHz Switching Freq-Max, BIPolar, PDIP20
Frequently Asked Questions
What is the input voltage range and switching frequency of the UC3875NG4?
The UC3875NG4 operates with an input voltage range of 11V to 20V (nominal 12V) and supports switching frequencies up to 1 MHz, making it suitable for compact, high-frequency resonant power supply designs.
What control modes does the UC3875NG4 support?
The UC3875NG4 supports both current-mode and voltage-mode control, as well as phase shift resonant control technique. It can also be configured for standard PWM control, giving designers significant flexibility in power converter topologies.
What package type is the UC3875NG4 and how does it help with prototyping?
The UC3875NG4 comes in a DIP-20 (Dual-In-Line, 20-pin) through-hole package, which is ideal for prototyping and breadboard-based development. This package type also simplifies manual soldering in low-volume or laboratory environments.
What are typical applications for the UC3875NG4?
Typical applications include full-bridge resonant DC-DC converters, telecom and server power supplies, industrial SMPS units, battery chargers, and motor drive auxiliary supplies where phase-shift PWM and zero-voltage switching improve conversion efficiency.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 20+ | $12.8900 | $257.80 |
| 40+ | $10.7520 | $430.08 |
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