UC3849DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UC3849DWG4 is an average current-mode PWM secondary-side controller IC from Texas Instruments operating from an 8-20V supply, designed to regulate power converter output stages with precise current control in a 24-pin SOIC package. It implements pulse-width modulation with current-mode feedback for improved line and load transient response. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- UC3849DWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC3849DWG4?
- Average current-mode PWM control on the secondary side provides superior current regulation accuracy and improved transient response over voltage-mode alternatives
- 8V to 20V input supply range (nominal 12V) suits secondary-side post-regulation in isolated DC-DC converters and telecom power systems
- 24-pin SOIC (R-PDSO-G24) surface-mount package enables compact board layouts for high-density power supply modules
- Pb-free RoHS-compliant construction (JESD-609 e4) meets modern environmental regulations for industrial and commercial applications
What is UC3849DWG4 used for?
The UC3849DWG4 is used in the secondary-side post-regulation stage of isolated DC-DC power converters in telecommunications, networking equipment, and industrial power systems where precise output current control is required. Its average current-mode architecture makes it well suited for battery charger controllers, multi-output flyback converters, and distributed power architectures where tight load regulation across multiple outputs is critical. The 24-pin SOIC package and 12V nominal supply align with standard telecom and embedded computing power module designs.
What are the specifications of UC3849DWG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 8V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G24 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.3A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP24,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 33mA |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 550kHz |
| 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 |
Where can I find the UC3849DWG4 datasheet?
UC3849DWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC3849DWG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does UC3849DWG4 regulate converter output stages?
UC3849DWG4 uses current-mode pulse-width modulation control, supporting secondary-side regulation for power converters operating across an 8 V to 20 V supply range.
Which package and voltage details matter for design-in?
The fetched context lists a 24-pin SOIC package, 12 V nominal input, and 20 V maximum input for layout and bias-supply checks.
Why choose this controller for switched-mode power supplies?
This device suits designs needing average current-mode PWM control, because it can regulate converter output stages while operating from an 8 V minimum supply.
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Why Buy from FindMyChip
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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