UC3841DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

Name: UC3841DWG4
Brand: Texas Instruments
SKU: UC3841DWG4
Availability: InStock

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.

OBSOLETEIntegrated CircuitVerified May 2026

Package / Visual Reference

UC3841DWG4Small Outline Packages

Quick Facts

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 Download

Official 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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UC3841DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

What are the key features of UC3841DWG4?

What is UC3841DWG4 used for?

What are the specifications of UC3841DWG4?

Compliance & Regulatory

Where can I find the UC3841DWG4 datasheet?

What are equivalent replacements for UC3841DWG4?

Frequently Asked Questions

What is the maximum switching frequency of the UC3841DWG4?

What input voltage range does the UC3841DWG4 support?

What package is the UC3841DWG4 available in?

Can the UC3841DWG4 be used in current-mode control designs?

What are typical applications for the UC3841DWG4?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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