UC3841DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments UC3841DWG4 is a PWM current-mode controller delivering up to 1 A output with switching frequency up to 500 kHz. Operating from 8 V to 30 V input, it supports pulse width modulation and current-mode control for efficient power supply designs. Available in 18-Pin SOIC package from Texas Instruments, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- UC3841DWG4 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 UC3841DWG4?
- Current-mode PWM control enabling precise cycle-by-cycle current limiting and improved transient response
- Wide input voltage range of 8 V to 30 V supporting diverse power supply architectures
- High switching frequency up to 500 kHz allowing compact magnetics and reduced filter size
- 1 A gate drive output for direct MOSFET driving without external buffer
What is UC3841DWG4 used for?
The UC3841DWG4 is widely used in offline switching power supplies, DC-DC converters, and battery chargers where current-mode PWM control is required. It is suitable for industrial power supplies, telecom equipment, and embedded systems demanding stable regulated outputs with fast transient response. Its compact 18-Pin SOIC form factor makes it ideal for space-constrained designs requiring high-frequency switching.
What are the specifications of UC3841DWG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | CURRENT MODE OPERATION IS ALSO POSSIBLE |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 8V |
| Input Voltage-Nom | 20V |
| JESD-30 Code | R-PDSO-G18 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.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) | 14mA |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 500kHz |
| 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 UC3841DWG4 datasheet?
UC3841DWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC3841DWG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum switching frequency of the UC3841DWG4?
The UC3841DWG4 supports a maximum switching frequency of 500 kHz, enabling use of smaller magnetics and output filters compared to lower-frequency controllers, resulting in a more compact overall power supply design.
What input voltage range does the UC3841DWG4 support?
The UC3841DWG4 operates from a minimum input voltage of 8 V to a maximum of 30 V, with a nominal operating voltage of 20 V, making it suitable for a wide range of power supply input conditions in industrial and consumer applications.
What package is the UC3841DWG4 available in?
The UC3841DWG4 is available in an 18-Pin SOIC (Small Outline Integrated Circuit) surface-mount package, which is compact and compatible with standard PCB assembly processes for high-volume production.
Can the UC3841DWG4 be used in current-mode control designs?
Yes, the UC3841DWG4 is specifically designed to support current-mode operation, providing cycle-by-cycle current limiting and improved loop stability compared to voltage-mode controllers, making it ideal for demanding power supply applications.
What are typical applications for the UC3841DWG4?
Typical applications for the UC3841DWG4 include offline switching power supplies, DC-DC converters, battery chargers, telecom power systems, and industrial power supplies requiring reliable PWM current-mode control with up to 1 A gate drive capability.
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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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