UC2843AQD8RG4Q1 Texas Instruments Integrated Circuit (Other) In Stock

Name: UC2843AQD8RG4Q1
Brand: Texas Instruments
SKU: UC2843AQD8RG4Q1
Availability: InStock

UC2843AQD8RG4Q1 is a current-mode PWM controller IC by Texas Instruments. It operates with input voltage range of 12V to 25V and supports pulse width modulation control technique. Ideal for switching power supplies, DC-DC converters, and motor drive applications. Available in SOIC-8 package with worldwide shipping.

OBSOLETEIntegrated CircuitVerified Apr 2026

Package / Visual Reference

UC2843AQD8RG4Q1Other

Quick Facts

Manufacturer: Texas Instruments
Package: Other
Pin Count: 8
Lifecycle: OBSOLETE
Datasheet: UC2843AQD8RG4Q1 Datasheet PDF
Category: Integrated Circuit
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of UC2843AQD8RG4Q1?

Current-mode control with pulse width modulation for precise regulation and fast transient response
Wide input voltage range from 12V to 25V (nominal 15V) supporting diverse power supply designs
Single-function PWM controller in compact R-PDSO-G8 (SOIC-8) package for space-constrained designs
Automotive-grade (Q1) qualification meeting AEC-Q100 requirements for high-reliability applications
RoHS-compliant (JESD-609 e4) construction ensuring environmental compliance

What is UC2843AQD8RG4Q1 used for?

The UC2843AQD8RG4Q1 is widely used in switching power supply designs including flyback, forward, and boost converter topologies for industrial and automotive applications. Its current-mode PWM control makes it suitable for DC-DC converters requiring tight output regulation and fast load transient response. The automotive-grade (Q1) qualification makes it ideal for on-board chargers, ADAS power rails, and other safety-critical vehicle electronics.

What are the specifications of UC2843AQD8RG4Q1?

YTEOL	0
Analog IC - Other Type	SWITCHING CONTROLLER
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	25V
Input Voltage-Min	12V
Input Voltage-Nom	15V
JESD-30 Code	R-PDSO-G8
JESD-609 Code	e4
Number of Functions	1
Output Current-Max	1A
Output Voltage-Max	5.05V
Output Voltage-Min	4.95V
Output Voltage-Nom	5V
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOP8,.25
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Screening Level	AEC-Q100
Supply Current-Max (Isup)	17mA
Surface Mount	YES
Switcher Configuration	PUSH-PULL
Switching Frequency-Max	500kHz
Temperature Grade	AUTOMOTIVE
Terminal Finish	NICKEL PALLADIUM GOLD
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	30
Package	Other

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 UC2843AQD8RG4Q1 datasheet?

UC2843AQD8RG4Q1 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for UC2843AQD8RG4Q1?

Compatible alternatives and drop-in replacements for UC2843AQD8RG4Q1:

UC2843AQD8G4Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8

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UC2843AD8TRG4Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8

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UC2843AD8G4Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8

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UC2843AQD8Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8

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UC2843ADG4Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

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UC2843ADTRTexas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

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UC2843AD8Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8

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UC2843AD8TRTexas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8

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Compare all alternatives & request quotes →

Frequently Asked Questions

How should supply voltage be planned for UC2843AQD8RG4Q1?

Design the bias supply around the fetched 12 V to 25 V input range, with 15 V nominal operation suitable for many controller startup circuits.

Why use this current-mode PWM controller in power-conversion designs?

UC2843AQD8RG4Q1 is a 1-function switching controller using current-mode pulse width modulation, fitting regulated DC-DC converters and switching supply control loops.

For PCB and assembly review, which package details should be locked down?

Confirm the SOIC-8 package and R-PDSO-G8 code before layout release, because the controller uses 8 pins and must match the intended footprint.

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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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UC2843AQD8RG4Q1 Texas Instruments Integrated Circuit (Other) In Stock

What are the key features of UC2843AQD8RG4Q1?

What is UC2843AQD8RG4Q1 used for?

What are the specifications of UC2843AQD8RG4Q1?

Compliance & Regulatory

Where can I find the UC2843AQD8RG4Q1 datasheet?

What are equivalent replacements for UC2843AQD8RG4Q1?

Frequently Asked Questions

How should supply voltage be planned for UC2843AQD8RG4Q1?

Why use this current-mode PWM controller in power-conversion designs?

For PCB and assembly review, which package details should be locked down?

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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