UCC3809PW-2

Product Overview

Category

UCC3809PW-2 belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is commonly used in various power supply systems, including switch-mode power supplies (SMPS), battery chargers, and DC-DC converters.

Characteristics

• UCC3809PW-2 is a high-performance pulse width modulation (PWM) controller.
• It operates at a fixed frequency and regulates the duty cycle of the output waveform.
• The device incorporates several protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
• It offers excellent line and load regulation, making it suitable for demanding power management applications.

Package

UCC3809PW-2 is available in a small outline integrated circuit (SOIC) package. This package provides good thermal performance and ease of soldering.

Essence

The essence of UCC3809PW-2 lies in its ability to efficiently control the power flow in various electronic systems, ensuring stable and reliable operation.

Packaging/Quantity

UCC3809PW-2 is typically packaged in reels or tubes, with quantities varying depending on the supplier. Common packaging options include 2500 units per reel or 50 units per tube.

Specifications

• Input Voltage Range: 4.5V to 15V
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to 85°C
• Maximum Duty Cycle: 100%
• Oscillator Frequency: 100kHz to 1MHz
• Output Current: Up to 500mA

Detailed Pin Configuration

UCC3809PW-2 features an 8-pin SOIC package with the following pin configuration:

1. COMP: Compensation pin for external compensation network.
2. FB: Feedback pin for voltage regulation.
3. VREF: Reference voltage output.
4. GND: Ground connection.
5. RT/CT: Timing resistor and timing capacitor connection for setting the oscillator frequency.
6. CT: Timing capacitor connection for setting the oscillator frequency.
7. VCC: Positive supply voltage input.
8. OUT: Output pin for driving external power devices.

Functional Features

• Pulse Width Modulation (PWM): UCC3809PW-2 utilizes PWM to regulate the duty cycle of the output waveform, ensuring precise control over the power delivered to the load.
• Protection Mechanisms: The device incorporates various protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown, safeguarding the system from potential faults or failures.
• Excellent Regulation: UCC3809PW-2 offers exceptional line and load regulation, enabling stable and accurate power management in a wide range of operating conditions.
• Efficiency Enhancement: By efficiently controlling the power flow, this controller minimizes energy losses, resulting in improved overall system efficiency.

Advantages and Disadvantages

Advantages

• High-performance PWM controller suitable for demanding power management applications.
• Incorporates multiple protection mechanisms for enhanced system reliability.
• Excellent line and load regulation capabilities ensure stable power delivery.
• Compact SOIC package provides good thermal performance and ease of soldering.

Disadvantages

• Limited output current capability compared to some other power management ICs.
• Requires external compensation network for optimal performance.

Working Principles

UCC3809PW-2 operates based on the principle of pulse width modulation. It compares the feedback voltage with a reference voltage and adjusts the duty cycle of the output waveform accordingly. By regulating the duty cycle, it controls the average power delivered to the load, achieving the desired voltage or current regulation.

The device also incorporates protection mechanisms to ensure safe operation. Overvoltage protection prevents excessive voltage levels, undervoltage lockout protects against low input voltages, and thermal shutdown safeguards the device from overheating.

Detailed Application Field Plans

UCC3809PW-2 finds applications in various power management systems, including: 1. Switch-mode power supplies (SMPS) 2. Battery chargers 3. DC-DC converters 4. LED drivers 5. Industrial control systems

Its high-performance characteristics and protection features make it suitable for demanding applications where stable and efficient power management is crucial.

Detailed and Complete Alternative Models

Some alternative models to UCC3809PW-2 that offer similar functionality include: - UC3842 - TL494 - SG3525 - LT1241

These alternatives provide different package options, specifications, and pin configurations, allowing designers to choose the most suitable option for their specific application requirements.

In conclusion, UCC3809PW-2 is a high-performance PWM controller designed for power management applications. Its compact package, excellent regulation capabilities, and protection features make it a reliable choice for various electronic systems requiring precise power control.