UCC3809DTR-1

Product Overview

Category

UCC3809DTR-1 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• High efficiency
• Low standby power consumption
• Wide input voltage range
• Protection features against overvoltage, undervoltage, and overcurrent

Package

UCC3809DTR-1 is available in a small outline package (SOT-23) which allows for easy integration into various electronic devices.

Essence

The essence of UCC3809DTR-1 lies in its ability to efficiently regulate and control power in electronic systems, ensuring optimal performance and protection.

Packaging/Quantity

UCC3809DTR-1 is typically packaged in reels containing 3000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 12V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 500mA
• Switching Frequency: 100kHz to 1MHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

UCC3809DTR-1 consists of six pins:

1. GND: Ground pin
2. VREF: Reference voltage input pin
3. COMP: Error amplifier output pin
4. FB: Feedback input pin
5. RT/CT: Timing resistor/capacitor connection pin
6. VCC: Power supply input pin

Functional Features

• Error Amplifier: The built-in error amplifier ensures accurate regulation of the output voltage.
• Oscillator: The internal oscillator generates the switching frequency required for power regulation.
• Protection Circuitry: UCC3809DTR-1 includes protection features such as overvoltage, undervoltage, and overcurrent protection to safeguard the system.
• Soft Start: The soft start feature gradually increases the output voltage during startup, preventing excessive inrush current.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Wide input voltage range allows for compatibility with various power sources.
• Protection features enhance system reliability.
• Small package size enables space-saving integration.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Requires external timing components for proper operation.

Working Principles

UCC3809DTR-1 operates based on the principle of pulse width modulation (PWM). It regulates the output voltage by adjusting the duty cycle of the switching signal. The error amplifier compares the feedback voltage with the reference voltage and generates an error signal. This signal is then used to control the duty cycle of the switching signal, ensuring the desired output voltage is maintained.

Detailed Application Field Plans

UCC3809DTR-1 finds application in various fields, including: 1. Power supplies for consumer electronics 2. Battery charging systems 3. LED lighting drivers 4. Industrial automation equipment 5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to UCC3809DTR-1 are: - LM2576-ADJ - LT1073 - MC34063A - TPS5430

These models offer similar functionality and can be used as substitutes depending on specific requirements.

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