UCC2802DG4

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High-performance current-mode PWM controller - Designed for offline and DC-to-DC converter applications - Provides necessary features to implement a complete power supply control system

Package: SOIC-8

Essence: The UCC2802DG4 is a high-performance current-mode PWM controller that is widely used in power management applications. It offers various features required to implement a complete power supply control system.

Packaging/Quantity: The UCC2802DG4 is available in a standard SOIC-8 package. It is typically sold in reels of 2500 units.

Specifications

Input Voltage Range: 7 V to 25 V
Output Voltage Range: 0 V to 5 V
Operating Temperature Range: -40°C to 85°C
Switching Frequency: Up to 1 MHz
Maximum Duty Cycle: 100%
Supply Current: 3 mA (typical)
Output Current: 200 mA (maximum)

Pin Configuration

The UCC2802DG4 has the following pin configuration:

```

| | --| VREF | --| COMP | --| FB | --| CS | --| GND | --| RT/CT | --| OUT | --| VCC | |___________| ```

Functional Features

Current-Mode Control: The UCC2802DG4 utilizes current-mode control, which provides excellent line and load regulation.
Soft Start: It incorporates a soft-start feature to prevent excessive inrush current during startup.
Protection Mechanisms: The IC includes various protection mechanisms such as overvoltage protection, undervoltage lockout, and thermal shutdown.
Error Amplifier: The built-in error amplifier ensures accurate voltage regulation.

Advantages

High-performance current-mode control for improved line and load regulation
Comprehensive protection mechanisms for enhanced reliability
Soft-start feature to prevent inrush current
Compact SOIC-8 package for space-constrained applications

Disadvantages

Limited output current capability (maximum 200 mA)
Requires external components for complete power supply implementation

Working Principles

The UCC2802DG4 operates based on the current-mode control principle. It compares the feedback voltage with a reference voltage and adjusts the duty cycle of the PWM signal accordingly. This control mechanism ensures stable and efficient power supply operation.

Application Field Plans

The UCC2802DG4 is commonly used in various power management applications, including: - Switching power supplies - DC-to-DC converters - LED drivers - Battery chargers

Alternative Models

UCC2803DG4: Similar to UCC2802DG4 but with an additional output driver
UCC2804DG4: Enhanced version with integrated high-voltage startup circuitry
UCC2805DG4: Current-mode PWM controller with adjustable switching frequency

These alternative models offer similar functionality and can be considered as substitutes for the UCC2802DG4 depending on specific requirements.

In conclusion, the UCC2802DG4 is a high-performance current-mode PWM controller widely used in power management applications. Its compact size, comprehensive features, and reliable performance make it a popular choice among designers in various industries.

Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von UCC2802DG4 in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of UCC2802DG4 in technical solutions:

Q: What is UCC2802DG4? A: UCC2802DG4 is a pulse width modulation (PWM) controller IC commonly used in power supply applications.
Q: What are the key features of UCC2802DG4? A: Some key features of UCC2802DG4 include adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.
Q: How does UCC2802DG4 help in power supply applications? A: UCC2802DG4 provides control signals to regulate the output voltage and maintain stability in power supply circuits.
Q: Can UCC2802DG4 be used in both AC-DC and DC-DC converter designs? A: Yes, UCC2802DG4 can be used in both AC-DC and DC-DC converter designs, making it versatile for various power supply applications.
Q: What is the maximum operating frequency of UCC2802DG4? A: The maximum operating frequency of UCC2802DG4 is typically around 500 kHz.
Q: Does UCC2802DG4 have built-in protection features? A: Yes, UCC2802DG4 has built-in protection features such as overvoltage protection and cycle-by-cycle current limiting to ensure safe operation.
Q: Can UCC2802DG4 operate in a wide input voltage range? A: Yes, UCC2802DG4 can operate in a wide input voltage range, typically from 8V to 35V.
Q: Is UCC2802DG4 suitable for high-power applications? A: UCC2802DG4 is more commonly used in low to medium power applications. For high-power applications, other controller ICs may be more suitable.
Q: Can UCC2802DG4 be used in battery charging circuits? A: Yes, UCC2802DG4 can be used in battery charging circuits by controlling the charging voltage and current.
Q: Are there any application notes or reference designs available for UCC2802DG4? A: Yes, Texas Instruments provides application notes and reference designs for UCC2802DG4, which can help in understanding its implementation in various technical solutions.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios.