UCC2839D - English Editing Encyclopedia Entry

Product Overview

Use

This IC is commonly used in power management applications.

Characteristics

UCC2839D is a high-performance, synchronous buck controller.
It offers excellent efficiency and regulation for various power supply designs.
The device operates at a high switching frequency, enabling compact and efficient power solutions.
It provides advanced features such as adjustable soft-start, current limit, and thermal shutdown protection.

Package and Quantity

UCC2839D is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing multiple units.

Specifications

Input Voltage Range: 4.5V to 15V
Output Voltage Range: 0.8V to 5.5V
Switching Frequency: Up to 1MHz
Maximum Duty Cycle: 90%
Operating Temperature Range: -40°C to +125°C
Package Type: SOIC-8

Pin Configuration

The UCC2839D IC has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VIN | Input voltage | | 2 | GND | Ground reference | | 3 | FB | Feedback voltage input | | 4 | COMP | Compensation node for error amplifier | | 5 | SS/TR | Soft-start/Tracking control | | 6 | EN | Enable control input | | 7 | VCC | Supply voltage | | 8 | SW | Switching node |

Functional Features

Adjustable soft-start allows gradual ramp-up of the output voltage, reducing stress on components during startup.
Current limit protection prevents excessive current flow, safeguarding the circuit and load.
Thermal shutdown protection shuts down the device if the temperature exceeds a safe operating limit, preventing damage.

Advantages

High efficiency and regulation ensure reliable power supply performance.
Compact size and high switching frequency enable space-saving designs.
Advanced features provide enhanced control and protection for the system.

Disadvantages

The UCC2839D IC may require additional external components for specific applications.
It is not suitable for high-voltage applications beyond its specified input voltage range.

Working Principles

The UCC2839D operates as a synchronous buck controller, regulating the output voltage by controlling the duty cycle of the switching transistor. It utilizes pulse-width modulation (PWM) to achieve efficient power conversion.

Application Field Plans

The UCC2839D is commonly used in various power management applications, including: 1. DC-DC converters for portable devices 2. Power supplies for computer peripherals 3. Voltage regulators for automotive electronics 4. Industrial power systems

Alternative Models

Other alternative models that can be considered for similar applications include: - UCC28950 - LM5118 - TPS54332

These alternatives offer similar functionality and can be evaluated based on specific requirements.

In conclusion, the UCC2839D is a high-performance synchronous buck controller IC widely used in power management applications. Its compact size, advanced features, and excellent efficiency make it a popular choice for various designs.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan UCC2839D dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of UCC2839D in technical solutions:

Q: What is UCC2839D? A: UCC2839D is a high-speed, low-power pulse width modulation (PWM) controller used in power supply applications.
Q: What is the input voltage range for UCC2839D? A: The input voltage range for UCC2839D is typically between 4.5V and 15V.
Q: What is the maximum switching frequency supported by UCC2839D? A: UCC2839D can support a maximum switching frequency of up to 1MHz.
Q: Can UCC2839D be used in both buck and boost converter topologies? A: Yes, UCC2839D can be used in both buck and boost converter topologies, making it versatile for various power supply designs.
Q: Does UCC2839D have built-in protection features? A: Yes, UCC2839D has built-in protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout.
Q: What is the typical efficiency of UCC2839D in power supply applications? A: The typical efficiency of UCC2839D depends on the specific design and operating conditions but can reach up to 95%.
Q: Can UCC2839D operate in a wide temperature range? A: Yes, UCC2839D is designed to operate in a wide temperature range, typically from -40°C to 125°C.
Q: Is UCC2839D suitable for battery-powered applications? A: Yes, UCC2839D is suitable for battery-powered applications due to its low-power consumption and ability to operate at low input voltages.
Q: Can UCC2839D be used in high-current applications? A: Yes, UCC2839D can be used in high-current applications by using external power MOSFETs capable of handling the required current.
Q: Are there any application notes or reference designs available for UCC2839D? A: Yes, Texas Instruments provides application notes and reference designs that showcase the implementation of UCC2839D in various power supply applications. These resources can be found on their website.

Please note that the answers provided here are general and may vary depending on the specific requirements and conditions of your technical solution. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for accurate information.