UC3843ADTRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

Name: UC3843ADTRG4
Brand: Texas Instruments
SKU: UC3843ADTRG4
Availability: InStock

The UC3843ADTRG4 is a current-mode PWM controller IC from Texas Instruments, supporting input voltages from 8.2V to 25V with pulse width modulation control technique. It features a 14-pin SOIC package and is ideal for switch-mode power supply designs. Available from stock worldwide with competitive pricing.

OBSOLETEIntegrated CircuitVerified May 2026

Package / Visual Reference

UC3843ADTRG4Small Outline Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Small Outline Packages
Pin Count: 14
Lifecycle: OBSOLETE
Datasheet: UC3843ADTRG4 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 UC3843ADTRG4?

Current-mode PWM control for improved line regulation and inherent pulse-by-pulse current limiting
Wide input voltage range of 8.2V to 25V supporting diverse power supply topologies
Single-function 14-pin SOIC package optimized for compact switch-mode power supply designs

What is UC3843ADTRG4 used for?

The UC3843ADTRG4 is widely used in switch-mode power supplies (SMPS) for industrial and consumer electronics applications. It is well-suited for flyback, forward, and boost converter topologies where precise current-mode control is required. This device is commonly found in battery chargers, DC-DC converters, and power management systems requiring reliable PWM regulation.

What are the specifications of UC3843ADTRG4?

YTEOL	0
Analog IC - Other Type	SWITCHING CONTROLLER
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	25V
Input Voltage-Min	8.2V
Input Voltage-Nom	15V
JESD-30 Code	R-PDSO-G14
JESD-609 Code	e4
Number of Functions	1
Output Current-Max	1A
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOP14,.25
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Supply Current-Max (Isup)	17mA
Supply Voltage-Nom (Vsup)	11V
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 1
ECCN	EAR99
HTS Code	8542.39.00.60

Where can I find the UC3843ADTRG4 datasheet?

UC3843ADTRG4 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for UC3843ADTRG4?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the input voltage range of the UC3843ADTRG4?

The UC3843ADTRG4 operates with an input voltage range from 8.2V minimum to 25V maximum, with a nominal operating voltage of 15V, making it suitable for a wide range of switch-mode power supply designs.

What control mode does the UC3843ADTRG4 use?

The UC3843ADTRG4 uses current-mode control with pulse width modulation (PWM) technique, which provides inherent pulse-by-pulse current limiting and improved line transient response compared to voltage-mode controllers.

What package type is the UC3843ADTRG4 available in?

The UC3843ADTRG4 is available in a 14-pin Small Outline IC (SOIC) package, conforming to JESD-30 code R-PDSO-G14, making it suitable for compact PCB designs in industrial power supply applications.

What are typical applications for the UC3843ADTRG4?

The UC3843ADTRG4 is commonly used in flyback converters, forward converters, boost converters, battery chargers, and DC-DC power modules where current-mode PWM control with input voltages up to 25V is required.

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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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UC3843ADTRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

What are the key features of UC3843ADTRG4?

What is UC3843ADTRG4 used for?

What are the specifications of UC3843ADTRG4?

Compliance & Regulatory

Where can I find the UC3843ADTRG4 datasheet?

What are equivalent replacements for UC3843ADTRG4?

Frequently Asked Questions

What is the input voltage range of the UC3843ADTRG4?

What control mode does the UC3843ADTRG4 use?

What package type is the UC3843ADTRG4 available in?

What are typical applications for the UC3843ADTRG4?

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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