UCC2808D-1

Product Overview

Category

UCC2808D-1 belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems, including switch-mode power supplies (SMPS), battery chargers, and LED drivers.

Characteristics

• UCC2808D-1 is a high-performance voltage mode PWM controller.
• It operates with a wide input voltage range, making it suitable for different power supply designs.
• The device offers precise regulation and control over the output voltage and current.
• It incorporates various protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
• UCC2808D-1 provides excellent line and load regulation, ensuring stable and reliable power delivery.

Package

UCC2808D-1 is available in a small outline package (SOP) with eight pins. The package is designed to provide efficient heat dissipation and ease of integration into circuit boards.

Essence

The essence of UCC2808D-1 lies in its ability to regulate and control power supply systems efficiently, ensuring stable and reliable operation.

Packaging/Quantity

UCC2808D-1 is typically packaged in reels or tubes, containing a specified quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 500mA
• Operating Temperature Range: -40°C to 125°C
• Switching Frequency: Adjustable up to 1MHz
• Error Amplifier Gain Bandwidth: 2.1MHz
• Oscillator Frequency Range: 50kHz to 500kHz

Detailed Pin Configuration

1. COMP: Compensation pin for error amplifier feedback.
2. CS: Current sense input for current limit control.
3. GND: Ground reference for the IC.
4. FB: Feedback pin for output voltage regulation.
5. VCC: Power supply input for the IC.
6. OUT: Output pin for driving external power devices.
7. RT/CT: Timing components connection for oscillator frequency and soft-start time.
8. SS/TR: Soft-start and shutdown control pin.

Functional Features

• Voltage mode PWM control with adjustable switching frequency.
• Error amplifier with precise voltage regulation and compensation capability.
• Current sensing and limiting for efficient power delivery.
• Soft-start function for gradual power-up and reduced inrush current.
• Shutdown control for power management and protection.

Advantages

• Wide input voltage range allows flexibility in power supply design.
• Excellent line and load regulation ensure stable output voltage and current.
• Integrated protection features enhance system reliability and safety.
• Small package size enables compact circuit board designs.
• Adjustable switching frequency provides optimization for different applications.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Requires external timing components for oscillator frequency adjustment.
• May require additional circuitry for specific application requirements.

Working Principles

UCC2808D-1 operates based on the voltage mode PWM control technique. It compares the feedback voltage from the output with a reference voltage to generate an error signal. This error signal is then amplified and used to adjust the duty cycle of the PWM signal, which controls the power delivered to the load. By continuously monitoring and regulating the output voltage and current, UCC2808D-1 ensures stable and efficient power supply operation.

Detailed Application Field Plans

UCC2808D-1 finds applications in various power management systems, including: - Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. - Battery chargers for portable devices, electric vehicles, and renewable energy systems. - LED drivers for lighting applications, such as streetlights, automotive lighting, and display backlighting.

Detailed and Complete Alternative Models

1. UCC2808D: Similar to UCC2808D-1 but without the specific features of UCC2808D-1.
2. UCC2809D: A dual-channel version of UCC2808D-1, suitable for multi-output power supply designs.
3. UCC3808D-1: An enhanced version with additional protection features and higher output current capability.

These alternative models provide similar functionality and can be considered based on specific application requirements.

Word count: 598 words