UC3874DW-2G4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UC3874DW-2G4 is a high-efficiency synchronous step-down (buck) switching controller from Texas Instruments in an 18-pin SOIC package. It operates with current-mode control and pulse width modulation, supporting input voltages from 12 V to 36 V for versatile power supply designs. Available with worldwide shipping from authorized distributors.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- UC3874DW-2G4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control with synchronous rectification for high conversion efficiency in buck topologies
- Wide input voltage range of 12 V to 36 V supports diverse DC-DC power supply designs
- 18-pin SOIC package (JESD-30 R-PDSO-G18) with RoHS-compliant e4 rating for modern manufacturing requirements
Applications
The UC3874DW-2G4 is designed for use in high-efficiency synchronous buck DC-DC converters found in telecom power supplies, industrial equipment, and server power systems. Its current-mode PWM control enables fast transient response and tight output voltage regulation under varying load conditions. It is also suited for point-of-load (POL) converters in embedded computing and networking infrastructure.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 12V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G18 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 12mA |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 300kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC3874DW-2G4:
Rochester Electronics LLC 1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, PDSO18, GREEN, SOIC-18
Switching Controller, Current-mode, 1A, 300kHz Switching Freq-Max, BIPolar, PDSO18
Frequently Asked Questions
What is the UC3874DW-2G4 used for?
The UC3874DW-2G4 is a synchronous step-down (buck) switching controller used to design high-efficiency DC-DC power converters. It uses current-mode pulse width modulation control and supports an input voltage range of 12 V to 36 V, making it suitable for telecom, industrial, and computing power supply applications.
What control topology does the UC3874DW-2G4 use?
The UC3874DW-2G4 uses current-mode control with pulse width modulation (PWM). Current-mode control improves transient response, simplifies loop compensation, and provides inherent cycle-by-cycle overcurrent protection, making it a preferred topology for high-performance synchronous buck regulators.
What package does the UC3874DW-2G4 come in?
The UC3874DW-2G4 is housed in an 18-pin small outline package (SOIC), identified by JESD-30 code R-PDSO-G18. This compact surface-mount package is widely used in power management designs where board space efficiency and automated assembly compatibility are important.
Is the UC3874DW-2G4 RoHS compliant?
Yes, the UC3874DW-2G4 is RoHS compliant with a JESD-609 code of e4, and its Pb-free code is listed as Yes. This ensures compliance with international regulations restricting the use of hazardous substances, making it suitable for use in environmentally regulated end products.
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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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