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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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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