UC2843AN

Name: UC2843AN
Brand: Texas Instruments
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

30-V, 1-A power supply

5,247 Effective Inventory

UC2843AN

Effective Inventory5,247

30-V, 1-A power supply

Manufacturer Part # : UC2843AN
Package/Case: PDIP (P)-8
Brand: Texas Instruments
Series : UC2843

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UC2843AN DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$0.984	$0.98
10	$0.909	$9.09
50	$0.635	$31.75
100	$0.590	$59.00
500	$0.568	$284.00
1000	$0.559	$559.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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UC2843AN Details

The UC2843AN is a high-performance, 7.6V to 30V, dual PWM controller from Texas Instruments, designed for efficient and reliable power management in various applications. This device features advanced thermal management, high-speed current sensing, and intelligent power monitoring, making it an ideal choice for industrial control systems, automotive voltage regulation, and battery charging.

Pinout

VCC: Positive Power Supply (7.6V to 30V)
GND: Ground
OUT1: PWM Output 1
OUT2: PWM Output 2
COMP: Compensation Pin (for external compensation)
FB: Feedback Pin (for internal or external feedback)

Key Features

High-performance PWM controller for efficient power management
7.6V to 30V operating voltage range
Advanced thermal management for reliable operation in harsh environments
High-speed current sensing for precise monitoring and control
Intelligent power monitoring for optimized system performance

Applications

Industrial control systems requiring efficient power management
Automotive voltage regulation applications demanding high reliability and efficiency
Battery charging systems needing precise current sensing and monitoring

Where to Use

The UC2843AN is suitable for use in various applications where efficient power management, high-speed current sensing, and intelligent power monitoring are critical. This includes industrial control systems, automotive voltage regulation, battery charging, and other applications requiring reliable and efficient power management.

How to Use

To use the UC2843AN, connect the VCC pin to a suitable power supply, the GND pin to ground, and the OUT1 and OUT2 pins to the load or motor. The COMP and FB pins can be used for external compensation and feedback, respectively. Ensure proper connections and operating conditions as specified in the datasheet.

Application Circuit

The application circuit diagram for the UC2843AN illustrates how to connect the device to a load or motor. It includes connections for power supply, ground, and output pins, ensuring proper operation and efficient power management.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

UC2842AN: A similar PWM controller from Texas Instruments with comparable features and performance.
LTC2978-1: An alternative PWM controller from Linear Technology offering equivalent functionality.

Complementary

The UC2843AN can be complemented by the UC2844AN, which offers additional features such as higher current handling and enhanced thermal management, suitable for more demanding applications.

When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the maximum operating voltage range of the UC2843AN?

A: The UC2843AN operates from 7.6V to 30V.

Q: Can the UC2843AN be used in automotive applications?

A: Yes, the UC2843AN is suitable for use in automotive voltage regulation and battery charging applications, offering high reliability and efficiency.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Topology	Boost, Buck, Buck boost, Flyback, Forward	Control mode	Peak current mode
Duty cycle (max) (%)	100	Switching frequency (max) (kHz)	500
Features	Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology	UVLO thresholds on/off (V)	8.4/7.6
Operating temperature range (°C)	-40 to 85	Rating	Catalog
Gate drive (typ) (A)	1	Vin (max) (V)	28

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification UC2843AN PDF Download

FAQs

What is UC2843AN?

The UC2843AN is a high-performance current-mode PWM controller IC manufactured by Texas Instruments. It is commonly used in switch-mode power supply applications for controlling the power delivery to various electronic devices.

How Does UC2843AN Work?

The UC2843AN operates by regulating the output voltage of a power supply based on feedback from the output load. It utilizes current-mode control to provide constant and efficient power delivery. The IC compares the output voltage with a reference voltage and adjusts the duty cycle of the PWM signal to maintain stability and regulation.

How Many Pins does UC2843AN have and What are the Functions of the Pinout Configuration?

The UC2843AN is housed in an 8-pin PDIP (Plastic Dual-In-Line Package) or SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

VCC: Power supply pin.
RT/CT: Oscillator timing resistor/capacitor pin.
OUT: Output driver pin for power transistor.
COMP: Compensation pin for feedback loop stabilization.
FB: Feedback pin for sensing the output voltage.
RT/CT: Oscillator timing resistor/capacitor pin.

What are the Pros and Cons of UC2843AN?

Pros:

Efficiency: Efficient current-mode control for optimized power delivery.
Compact: 8-pin package for space-saving designs.
Versatile: Suitable for a wide range of switch-mode power supply applications.
Reliable: Texas Instruments quality and performance standards.

Cons:

External Components: May require external components for specific power supply configurations.
Limited Functionality: Basic PWM control features compared to more advanced controllers.

Are There Any Equivalents/Alternatives to UC2843AN for Recommendation?

Alternatives to the UC2843AN include the TL494 from Texas Instruments and the SG3525A from STMicroelectronics.
The equivalent part to UC2843AN is the UC3843A, which provides similar functionality with some differences in specifications.