UC3874N-2G4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
UC3874N-2G4 is a high-efficiency synchronous step-down buck switching controller by Texas Instruments in an 18-pin DIP package. Key specs: current-mode PWM control, 12V to 36V input voltage range, and synchronous rectification for maximum efficiency. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- UC3874N-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 step-down topology enabling high conversion efficiency and fast transient response for demanding power supply designs
- Wide input voltage range of 12V to 36V (maximum) providing flexibility for 12V, 24V, and 28V bus applications in industrial and telecom power systems
- 18-pin DIP through-hole package facilitating rapid prototyping, lab evaluation, and low-volume production without SMD assembly equipment
Applications
The UC3874N-2G4 is designed for high-efficiency DC/DC point-of-load power conversion in industrial power supplies, telecom equipment, and server voltage regulation modules where synchronous rectification delivers superior efficiency over diode-based topologies. Its current-mode PWM architecture provides inherent cycle-by-cycle overcurrent limiting and simplified loop compensation, making it suitable for powering DSPs, FPGAs, and processor cores from 12V or 24V bus rails. The device is also used in battery chargers, motor drive auxiliary supplies, and distributed power architectures requiring regulated step-down conversion with excellent dynamic response.
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-PDIP-T18 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP18,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 12mA |
| Surface Mount | NO |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 300kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| 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 | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What control mode does the UC3874N-2G4 use?
The UC3874N-2G4 uses current-mode pulse width modulation (PWM) control, which provides inherent cycle-by-cycle overcurrent protection, simpler loop compensation compared to voltage-mode control, and improved transient response for dynamic load conditions in synchronous buck converter designs.
What is the input voltage range of the UC3874N-2G4?
The UC3874N-2G4 operates with an input voltage range of 12V nominal to 36V maximum, making it compatible with standard 12V and 24V power distribution buses widely used in industrial automation, telecommunications infrastructure, and distributed power system architectures.
What package does the UC3874N-2G4 use?
The UC3874N-2G4 is housed in an 18-pin plastic DIP (Dual In-line Package) with JESD-30 code R-PDIP-T18. The through-hole package is ideal for prototype boards and lab evaluation, offering easy insertion into breadboards and sockets without surface-mount assembly.
Is the UC3874N-2G4 RoHS compliant?
Yes, the UC3874N-2G4 is fully RoHS compliant with a JESD-609 code of e4, indicating lead-free construction. This makes it suitable for use in products sold in markets with environmental regulations restricting hazardous substances such as the European Union RoHS directive.
What are typical applications for the UC3874N-2G4?
Typical applications include synchronous step-down power modules for industrial control systems, 12V to 28V bus point-of-load converters in telecom and server equipment, laboratory power supply prototyping, battery charger stages, and motor drive auxiliary supplies requiring high-efficiency regulated DC/DC conversion with current-mode control.
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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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