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See Technical Specifications

UC2843D +BOM

Power Supply Controller PWM Controller 14-SOIC

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

UC2843D
Datasheet:

UC2843D Datasheet (PDF)
Output Type:

Transistor Driver
Function:

Step-Up, Step-Down, Step-Up/Step-Down
Output Configuration:

Positive, Isolation Capable
Topology:

Boost, Buck, Buck-Boost, Flyback, Forward
EDA/CAD Models:

Request Free CAD Models for UC2843D

UC2843D Information

Description

The UC2843D is a current-mode PWM controller from Texas Instruments, designed for switching power supply applications. It features adjustable frequency up to 1MHz, internal soft-start function, automatic feed-forward compensation, under-voltage lockout with hysteresis, and low-start-up current (<1mA). This IC is suitable for various topologies, including offline flyback converters, DC-DC converters, LED drivers, battery chargers, motor control systems, and voltage regulators. Its compact SOIC-8 package makes it ideal for industrial and consumer electronics applications. The UC2843D provides a high level of flexibility and reliability in power supply design, making it a popular choice among engineers.

Features

The UC2843D features include:

Current-mode PWM control IC
Adjustable frequency up to 1MHz
Internal soft-start function
Automatic feed-forward compensation
Under-voltage lockout with hysteresis
Low-start-up current (<1mA)
Available in SOIC-8 package

These features make the UC2843D suitable for various switching power supply applications, such as offline flyback converters, DC-DC converters, and LED drivers.

Package

According to the product information, the package type of UC2843D is SOIC (14-Pin).

Manufacturer

The manufacturer of the UC2843D is Texas Instruments (TI). TI is a multinational semiconductor company that specializes in designing, manufacturing, and selling semiconductors and related products. It was founded in 1930 and is headquartered in Dallas, Texas. TI is one of the largest and most successful semiconductor companies in the world, offering a wide range of products including microprocessors, sensors, wireless devices, and much more. The company has a strong reputation for innovation, quality, and customer satisfaction, making it a well-established player in the electronics industry.

Applications

The UC2843D is commonly used in various switching power supply applications such as offline flyback converters, DC-DC converters, and LED drivers. It's also utilized in battery chargers, motor control systems, and voltage regulators for industrial and consumer electronics.

Equivalent

Based on Texas Instruments' specifications and application notes, some equivalent products to UC2843D are:

STP16CPC (STMicroelectronics)
LP2950 (Texas Instruments)
NCP5564 (ON Semiconductor)

These current-mode PWM controllers have similar features and applications as the UC2843D, such as adjustable frequency, soft-start, and under-voltage lockout.

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)DC DC Switching Controllers	Series	-
Output Type	Transistor Driver	Function	Step-Up, Step-Down, Step-Up/Step-Down
Output Configuration	Positive, Isolation Capable	Topology	Boost, Buck, Buck-Boost, Flyback, Forward
Number of Outputs	1	Output Phases	1
Voltage - Supply (Vcc/Vdd)	12V ~ 28V	Frequency - Switching	Up to 500kHz
Duty Cycle (Max)	97%	Synchronous Rectifier	No
Clock Sync	No	Serial Interfaces	-
Control Features	Frequency Control	Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Base Product Number	UC2843
Package/Case	SOP14