UCC2809PW-2G4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
UCC2809PW-2G4 is a current-mode PWM secondary-side controller from Texas Instruments designed for isolated power supply regulation. It operates from a 10V to 15V supply, uses pulse-width modulation control, and is housed in an 8-pin TSSOP package with green/halogen-free construction. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UCC2809PW-2G4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control topology provides inherent cycle-by-cycle overcurrent limiting and improved line transient response in isolated power supplies
- 10V to 15V input voltage range with 12V nominal operation enables direct biasing from standard auxiliary windings in flyback and forward converters
- 8-pin TSSOP package (JESD-30 R-PDSO-G8) with JESD-609 e4 green/halogen-free rating minimizes PCB footprint while meeting modern environmental standards
Applications
The UCC2809PW-2G4 is designed for the secondary-side control stage of isolated DC-DC converters including flyback, forward, and half-bridge topologies used in telecom power supplies, industrial power modules, and server power systems. It regulates output voltage by modulating the PWM duty cycle on the secondary side, improving isolation and reducing optocoupler bandwidth requirements. Its compact TSSOP package makes it well-suited for space-constrained AC-DC adapter and on-board power converter designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 15V |
| Input Voltage-Min | 10V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.8A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 1000kHz |
| Technology | BCDMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the UCC2809PW-2G4?
The UCC2809PW-2G4 operates with an input voltage range of 10V minimum to 15V maximum, with a nominal operating voltage of 12V. This range is compatible with standard auxiliary winding voltages found in isolated switching power supplies, making it easy to integrate into existing flyback or forward converter designs without additional bias regulation.
What control mode does the UCC2809PW-2G4 use?
The UCC2809PW-2G4 uses current-mode pulse-width modulation (PWM) control. Current-mode control senses the inductor or transformer current each switching cycle, providing inherent overcurrent protection, better line transient response, and simpler loop compensation compared to voltage-mode PWM controllers.
What package does the UCC2809PW-2G4 come in?
The UCC2809PW-2G4 is housed in an 8-pin TSSOP (Thin Shrink Small Outline Package), identified by JESD-30 code R-PDSO-G8. This surface-mount package has a small footprint and fine pitch leads, making it ideal for compact power supply PCB designs. The 'G4' suffix confirms it meets green and halogen-free requirements per JESD-609 code e4.
Is the UCC2809PW-2G4 RoHS compliant?
Yes, the UCC2809PW-2G4 is Pb-free and RoHS compliant. Its JESD-609 code of e4 indicates it is manufactured with green and halogen-free materials, meeting the environmental compliance requirements for the European Union RoHS directive and similar regulations in other markets worldwide.
In what types of power supply topologies is the UCC2809PW-2G4 commonly used?
The UCC2809PW-2G4 is most commonly used in isolated DC-DC converter topologies such as flyback, forward, and half-bridge converters. It serves as the secondary-side PWM controller, regulating the output voltage feedback loop while maintaining galvanic isolation between the primary and secondary sides of the power supply.
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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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