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
Key Features
- 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
Applications
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) |
Alternate & Equivalent Parts
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $9.2300 | $9.23 |
| 100+ | $6.9200 | $692.00 |
| 1000+ | $6.0000 | $6000.00 |
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