UCC2807DTR-2

Product Overview

Category

UCC2807DTR-2 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications, specifically for controlling and regulating switch-mode power supplies.

Characteristics

• UCC2807DTR-2 is a high-performance current-mode PWM controller.
• It operates with a wide input voltage range, making it suitable for various power supply designs.
• The IC offers excellent line and load regulation, ensuring stable and reliable power output.
• It provides protection features such as overvoltage and overcurrent protection, enhancing system safety.

Package

UCC2807DTR-2 comes in a small outline package (SOP) with eight pins.

Essence

The essence of UCC2807DTR-2 lies in its ability to efficiently control and regulate power supplies, ensuring optimal performance and reliability.

Packaging/Quantity

UCC2807DTR-2 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 10V to 30V
• Output Voltage Range: 0V to 5V
• Operating Temperature Range: -40°C to 85°C
• Maximum Duty Cycle: 100%
• Frequency Range: 50kHz to 1MHz
• Supply Current: 3.5mA (typical)

Pin Configuration

UCC2807DTR-2 has the following pin configuration:

1. VREF: Reference voltage input
2. COMP: Error amplifier output
3. CS: Current sense input
4. RT/CT: Timing resistor/capacitor connection
5. GND: Ground
6. OUT: Output
7. VCC: Power supply input
8. FB: Feedback input

Functional Features

• Current-mode control for improved stability and transient response.
• Soft-start function to prevent excessive inrush current during startup.
• Adjustable frequency and duty cycle for flexible power supply design.
• Error amplifier with high gain and low offset voltage for accurate regulation.
• Overvoltage and overcurrent protection for enhanced system safety.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile power supply designs.
• Excellent line and load regulation ensure stable power output.
• Integrated protection features enhance system reliability.
• Small package size enables space-efficient PCB layout.

Disadvantages

• Limited maximum duty cycle may restrict certain applications requiring higher duty cycles.
• Operating temperature range might not be suitable for extreme environments.

Working Principles

UCC2807DTR-2 operates based on the current-mode control principle. It compares the sensed current through the power switch with a reference voltage, adjusting the duty cycle of the PWM signal accordingly. This control mechanism ensures stable and efficient power transfer from the input to the output.

Detailed Application Field Plans

UCC2807DTR-2 finds extensive application in various power management systems, including: 1. Switch-mode power supplies for consumer electronics. 2. Industrial power converters and inverters. 3. Automotive power modules. 4. Renewable energy systems such as solar inverters. 5. LED lighting drivers.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to UCC2807DTR-2 are: 1. UC3843: A popular current-mode PWM controller with similar features. 2. TL494: Another widely used PWM controller suitable for power supply applications. 3. SG3525: A versatile PWM controller commonly used in power electronics.

These alternative models offer comparable functionality and can be chosen based on specific design requirements.

In conclusion, UCC2807DTR-2 is a high-performance current-mode PWM controller used in power management applications. Its wide input voltage range, excellent regulation, and integrated protection features make it a reliable choice for various power supply designs.