UC2842AD8TR

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UC2842AD8TR

IC PWM BOOST FLYBACK CM 8SOIC

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Spécifications

Series UCx84xA
Part Status Active
Applications PWM Controller
Voltage - Input -0.3V ~ 6.3V
Voltage - Supply 10V ~ 30V
Current - Supply 11 mA
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Base Product Number UC2842

Vue d'ensemble

Description

The UC2842AD8TR is a high-performance current mode PWM (Pulse Width Modulation) controller designed primarily for switch-mode power supplies. It features a simple architecture that allows for easy implementation of various power supply topologies, including flyback, forward, and boost converters. The device operates with a wide input voltage range, typically from 10V to 30V, making it suitable for various applications.
Key features include an internal oscillator for frequency control, adjustable soft start for controlled power-up, and a built-in error amplifier for voltage regulation. It also offers over-current protection and under-voltage lockout, enhancing the reliability and safety of power supply designs. The controller can operate at frequencies up to 100 kHz, allowing for smaller inductors and capacitors, thereby reducing overall system size.
Typically available in an 8-pin DIP or SOIC package, the UC2842AD8TR is widely used in industrial, consumer electronics, and telecommunications applications. Its combination of performance, flexibility, and protection features makes it a popular choice for engineers designing efficient power supplies.

Features

The UC2842AD8TR is a high-performance current mode PWM (Pulse Width Modulation) controller designed for switch mode power supplies. Key features include:
1. High Efficiency: Designed to optimize power conversion efficiency in various applications.
2. Voltage Range: Operates with a wide input voltage range, typically from 10V to 30V.
3. Current Control: Incorporates current mode control for improved response to load changes.
4. Built-in Switching Frequency: Adjustable switching frequency up to 100 kHz, allowing for flexible design.
5. Soft Start: Features an internal soft start to minimize inrush current during power-up.
6. Protection Features: Includes over-voltage protection, under-voltage lockout, and thermal shutdown to enhance reliability.
7. Easy Compensation: Simple external compensation allows for stable operation across a range of conditions.
8. Low Standby Power: Designed for low standby power consumption, making it suitable for green energy applications.
This IC is commonly used in power supply designs for telecommunications, consumer electronics, and industrial equipment.

Package

The UC2842AD8TR is packaged in an 8-pin PDIP (Plastic Dual In-line Package).

Pinout

The UC2842AD8TR is an integrated circuit designed for power supply applications, specifically as a voltage mode PWM (Pulse Width Modulation) controller. It features an 8-pin dual in-line package (DIP) configuration.
Pin Count and Functions:
1. Pin 1 (COMP): Compensation node for stability.
2. Pin 2 (CS): Current sense input.
3. Pin 3 (VREF): Reference voltage output (5V).
4. Pin 4 (GND): Ground reference.
5. Pin 5 (RT): Timing resistor input for frequency setting.
6. Pin 6 (CT): Timing capacitor input for frequency setting.
7. Pin 7 (VCC): Supply voltage input.
8. Pin 8 (OUT): Output to drive the power switch.
This IC is commonly used in switch-mode power supplies (SMPS) and offers features like overcurrent protection and a frequency range of 100 kHz to 500 kHz, making it suitable for various DC-DC converter applications.

Manufacturer

The UC2842AD8TR is manufactured by Texas Instruments (TI), a prominent American technology company. Texas Instruments designs and produces a wide range of semiconductor products, including analog chips and embedded processors. The company is known for its innovation in the electronics industry, particularly in areas such as signal processing, power management, and analog solutions. TI serves various markets, including automotive, industrial, communications, and consumer electronics, providing products that facilitate advanced electronic applications.

Application

The UC2842AD8TR is a high-performance PWM controller primarily used in power supply applications. Its application areas include switch-mode power supplies (SMPS), AC-DC converters, DC-DC converters, and LED drivers. It is suitable for applications requiring efficient voltage regulation, such as in telecommunications, industrial equipment, and consumer electronics.

Equivalent

Equivalent products to the UC2842AD8TR chip include the TL494, LM3478, and OPTO-22. These alternatives provide similar functionalities in PWM control for power management applications. However, always check the datasheets for specific specifications and compatibility before substituting.

Expédition

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FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

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