UC3875N Texas Instruments In Stock
UC3875N is a phase-shifted PWM controller IC by Texas Instruments, designed for high-frequency zero-voltage switching power supplies. Key specs: up to 1MHz oscillator frequency, 4A peak gate drive, programmable dead-time control. From $6, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $6.0000(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC3875N?
- Phase-shifted PWM control for zero-voltage switching (ZVS) operation
- Programmable dead-time control to minimize switching losses
- Up to 1MHz oscillator frequency for high-frequency converter designs
- 4A peak gate drive current for fast MOSFET switching
- Integrated soft-start and cycle-by-cycle current limiting for protection
What is UC3875N used for?
UC3875N is widely used in high-efficiency DC-DC converters, including phase-shifted full-bridge and half-bridge topologies for telecom power supplies and server power systems. It is also applied in resonant LLC converters and UPS systems where zero-voltage switching reduces EMI and improves efficiency. The IC suits industrial power supplies, battery chargers, and motor drive systems requiring precise PWM control.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for UC3875N?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the UC3875N and what is it used for?
The UC3875N is a phase-shifted PWM controller IC from Texas Instruments designed for zero-voltage switching (ZVS) DC-DC power converters. It is commonly used in high-frequency full-bridge and half-bridge topologies for telecom power supplies, server PSUs, UPS systems, and industrial DC-DC converters requiring high efficiency and low EMI.
What are the key electrical specifications of the UC3875N?
The UC3875N features an oscillator frequency range up to 1MHz, programmable dead-time control, 4A peak gate drive current, a supply voltage range of 10V to 20V (VCC), and an operating temperature range of 0°C to 70°C. It includes integrated soft-start, cycle-by-cycle current limiting, and undervoltage lockout (UVLO) protection.
What package does the UC3875N come in?
The UC3875N is available in a 20-pin DIP (Dual In-line Package) through-hole package, making it easy to use in prototyping and production designs. Texas Instruments also offers functionally equivalent variants in surface-mount packages such as SOIC for space-constrained applications.
What are common alternatives or replacements for the UC3875N?
Common alternatives to the UC3875N include the UC3879, UCC3895, and UC1875 from Texas Instruments, which offer similar phase-shifted PWM control functions. The UCC3895 is a popular drop-in upgrade with enhanced features including adaptive dead-time control and improved gate drive, suitable for modern high-efficiency power supply designs.
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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 |
|---|---|---|
| 1+ | $9.2300 | $9.23 |
| 100+ | $6.9200 | $692.00 |
| 1000+ | $6.0000 | $6000.00 |
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