UCC28C45DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
UCC28C45DG4 is a BiCMOS current-mode PWM switching controller from Texas Instruments. It operates with 12–18V input, supports voltage-mode and pulse width modulation control, and is packaged in an 8-pin SOIC. Ideal for AC/DC converter designs requiring low-power, high-efficiency regulation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UCC28C45DG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- BiCMOS current-mode PWM control for high efficiency AC/DC conversion
- Wide input voltage range: 12V to 18V (nom. 15V)
- Supports both voltage-mode and current-mode operation
- Low-power design optimized for standby and light-load conditions
- 8-pin Small Outline Package (SOIC) for compact PCB integration
Applications
The UCC28C45DG4 is widely used in AC/DC power supply designs, including offline flyback converters, forward converters, and industrial power modules. Its pulse width modulation and current-mode control make it suitable for telecom power supplies, server power units, and embedded system regulators. The device also fits battery chargers and low-power adapters where efficiency and compact form factor are essential.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES IN CURRENT MODE |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 18V |
| Input Voltage-Min | 12V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| 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 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC28C45DG4:
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Voltage-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Voltage-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Frequently Asked Questions
What is the input voltage range of the UCC28C45DG4?
The UCC28C45DG4 operates over an input voltage range of 12V to 18V, with a nominal operating voltage of 15V. This range makes it well-suited for offline AC/DC converter topologies where regulated intermediate bus voltages are common.
What control mode does the UCC28C45DG4 use?
The UCC28C45DG4 supports both voltage-mode and current-mode control using pulse width modulation (PWM). Current-mode operation improves line and load regulation, simplifies loop compensation, and provides inherent cycle-by-cycle current limiting for enhanced protection.
What are the typical applications for the UCC28C45DG4?
This device is commonly used in flyback converters, forward converters, AC/DC power adapters, telecom power supplies, and industrial switching regulators. Its low-power BiCMOS design makes it ideal for applications requiring high efficiency and minimal standby power consumption.
What package does the UCC28C45DG4 come in?
The UCC28C45DG4 is available in an 8-pin Small Outline Integrated Circuit (SOIC) package, also designated as R-PDSO-G8. This compact surface-mount package is suitable for high-density PCB designs in space-constrained power supply applications.
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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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