UCC3809DTR-2 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
UCC3809DTR-2 is a current-mode PWM switching controller IC from Texas Instruments, operating from a 10 V to 19 V input supply. It provides pulse-width modulation control for DC-DC converters in an 8-pin SOIC package with RoHS-compliant, lead-free construction. Suitable for industrial and telecom power supply designs requiring precise current-mode regulation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UCC3809DTR-2 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6800(MOQ 1)
- 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 input voltage range of 10 V to 19 V for versatile DC-DC converter designs
- 8-pin SOIC package (JESD-30 R-PDSO-G8) enables compact switching controller footprint in space-constrained power modules
- Lead-free, RoHS-compliant (JESD-609 Code e4) construction with 15-year estimated product lifecycle for long-term supply assurance
Applications
UCC3809DTR-2 is used as the primary PWM controller in isolated and non-isolated DC-DC converters for 12 V bus-powered industrial equipment, telecom power shelves, and distributed power systems. Its current-mode control loop provides inherent cycle-by-cycle over-current limiting and fast transient response for point-of-load regulators. The compact 8-pin SOIC form factor suits high-density power supply boards where footprint and BOM cost are constrained.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 19V |
| 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 | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 25mA |
| Supply Voltage-Max (Vsup) | 19V |
| Supply Voltage-Min (Vsup) | 15V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 1000kHz |
| Technology | BCDMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 | 8542.39.00.90 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does UCC3809DTR-2 support, and what nominal bus voltage is it optimized for?
UCC3809DTR-2 operates from an input voltage range of 10 V to 19 V, with a nominal design point of 12 V. This makes it well suited for 12 V distributed bus architectures common in telecom, server, and industrial automation power systems. Under-voltage lockout prevents incorrect operation below the 10 V threshold.
How does current-mode control in UCC3809DTR-2 improve converter transient response compared to voltage-mode PWM?
Current-mode PWM control in UCC3809DTR-2 senses the inductor peak current each switching cycle and uses it as an inner feedback loop. This provides inherent cycle-by-cycle over-current limiting, automatic flux balancing in push-pull topologies, and faster load-step response — typically reducing output voltage deviation by 30 to 50% compared to single-loop voltage-mode control at equivalent loop bandwidth.
What package does UCC3809DTR-2 use, and how does it fit on a typical power PCB?
UCC3809DTR-2 is housed in an 8-pin SOIC package (JESD-30 code R-PDSO-G8) with a body width of approximately 3.9 mm and 1.27 mm lead pitch. Its small footprint and standard SOIC land pattern allow placement on densely populated power boards alongside bootstrap capacitors, gate resistors, and current sense resistors without requiring special PCB processes.
When should a designer choose UCC3809DTR-2 over a voltage-mode flyback controller for a 12 V input design?
UCC3809DTR-2 is preferred over voltage-mode alternatives when the design requires inherent over-current protection without additional sensing circuitry, fast response to wide load steps of 0 to 100%, or automatic balancing in half-bridge or push-pull topologies. Its 10 V to 19 V input range and current-mode architecture directly address the tight regulation and protection needs of 12 V bus converters powering sensitive digital loads.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.4100 | $2.41 |
| 2500+ | $1.6800 | $4200.00 |
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