UC2842AD8TR

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UC2842AD8TR

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IC PWM BOOST FLYBACK CM 8SOIC

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  • メーカー品番 #UC2842AD8TR

  • データシート UC2842AD8TR DataSheet

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仕様

属性 値
Series UCx84xA
Part Status Active
Applications PWM Controller
Voltage - Input -0.3V ~ 6.3V
Voltage - Supply 10V ~ 30V
Supply Current 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

概要

Description

The UC2842AD8TR is a high-performance, voltage-mode PWM (Pulse Width Modulation) controller designed for switching power supplies. It features a wide input voltage range, making it suitable for various applications, including offline and DC-DC converters. Key functionalities include a programmable oscillator frequency, soft start, and the ability to drive external N-channel MOSFETs efficiently.
This device integrates several protection features, such as over-current protection, under-voltage lockout, and thermal shutdown, ensuring safe operation. The UC2842AD8TR also provides a simple control loop compensation, allowing designers to create stable power supplies easily.
With a high-speed response and low-power consumption, it is widely used in applications like adapters, battery chargers, and industrial power supplies. Its compact 8-pin package enhances design flexibility and space efficiency in PCB layouts. Overall, the UC2842AD8TR is well-suited for designers seeking robust and efficient solutions in power management.

Equivalent

The UC2842AD8TR is a PWM controller primarily used in power supply applications. Equivalent products include the LM2842, TL494, SG3525, and UC3842. These alternatives provide similar functionalities such as voltage regulation and PWM control, though specific features like voltage ratings and pin configurations may vary. Always consult datasheets for exact specifications and compatibility.

Features

The UC2842AD8TR is a high-performance current mode PWM (Pulse Width Modulation) controller designed for power supply applications. Key features include:
1. Wide Input Voltage Range: Operates from 10V to 30V, making it suitable for various power supply designs.
2. High Switching Frequency: Supports frequencies up to 500 kHz, allowing for smaller inductors and capacitors, thus optimizing size and efficiency.
3. Current Mode Control: Provides superior line and load regulation, enhancing system stability and response to load changes.
4. Built-in Voltage Reference: Features a precise 5V reference for improved accuracy in feedback control.
5. Soft Start Function: Reduces inrush current and overshoot during startup, protecting the circuit components.
6. Integrated Protection Features: Includes overcurrent protection and thermal shutdown to enhance reliability.
7. DIP-8 Package: Compact form factor for easy integration into PCB designs.
These features make the UC2842AD8TR ideal for designing efficient power supplies, including switch-mode power supplies (SMPS) and converters.

Pinout

The UC2842AD8TR is an integrated circuit from Texas Instruments, primarily used for control in switch-mode power supplies. It features an 8-pin dual-in-line package (DIP).
Pin Count: 8 pins
Pin Functions:
1. Pin 1 (COMP): Compensation node for error amplifier.
2. Pin 2 (VFB): Inverting input for the error amplifier. Used for voltage feedback.
3. Pin 3 (IAMP): Current sense input, used for current limiting.
4. Pin 4 (RAMP): Ramp input for pulse-width modulation (PWM) control.
5. Pin 5 (VREF): Reference voltage output (typically 5V).
6. Pin 6 (GND): Ground reference.
7. Pin 7 (OUT): Output driver for controlling the power switch.
8. Pin 8 (VCC): Supply voltage input for the IC.
The UC2842AD8TR operates in continuous conduction mode, providing features like current limiting, voltage regulation, and soft start for efficient power supply management.

Manufacturer

The UC2842AD8TR is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments designs and produces a wide range of analog, embedded processing, and digital signal processing (DSP) solutions. The company serves multiple sectors, including industrial, automotive, communication, and consumer electronics.
Founded in 1930 and headquartered in Dallas, Texas, TI is known for its innovation in semiconductor technology and has a strong portfolio of products that enable efficient energy management and signal processing. The UC2842 is a part of TI's family of integrated circuits designed for power supply control, specifically in applications like switch-mode power supplies (SMPS).
TI is recognized for its commitment to advancing technology and providing robust support for engineers and developers through design tools, technical resources, and a collaborative community. The company's extensive product offering and engineering expertise make it a key player in the electronics industry.

Application

The UC2842AD8TR is a versatile PWM (Pulse Width Modulation) controller primarily used in DC-DC converters, such as buck, boost, and flyback converters. Its application areas include power supply systems for computers, telecommunications, and industrial equipment. It is also utilized in battery chargers, LED drivers, and renewable energy systems like solar inverters, due to its efficient power management capabilities. Additionally, it supports various voltage regulation applications in consumer electronics and automotive power supplies, providing precise control and high efficiency.

Package

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

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