UCC3809DTR-2G4

Product Overview

Category

UCC3809DTR-2G4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• Low-power, high-performance voltage mode PWM controller
• Wide input voltage range
• Adjustable frequency and maximum duty cycle
• Overcurrent protection
• Undervoltage lockout
• Soft start capability

Package

UCC3809DTR-2G4 is available in a small outline package (SOT-23) with three pins.

Essence

The essence of UCC3809DTR-2G4 lies in its ability to efficiently regulate and control power in various electronic devices.

Packaging/Quantity

This IC is typically sold in reels containing 3000 units per reel.

Specifications

• Input Voltage Range: 3V to 20V
• Output Voltage Range: 0.8V to VCC
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to 85°C
• Switching Frequency Range: 50kHz to 1MHz
• Quiescent Current: 1.5mA

Pin Configuration

UCC3809DTR-2G4 has the following pin configuration:

```

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| | --| VCC | --| GND | --| COMP | |_______| ```

• VCC: Power supply input pin
• GND: Ground reference pin
• COMP: Error amplifier output and compensation pin

Functional Features

1. Voltage Mode PWM Control: UCC3809DTR-2G4 utilizes voltage mode control to regulate the output voltage accurately.
2. Wide Input Voltage Range: The IC can operate within a wide range of input voltages, making it suitable for various applications.
3. Adjustable Frequency and Duty Cycle: The frequency and maximum duty cycle can be adjusted to meet specific requirements.
4. Overcurrent Protection: UCC3809DTR-2G4 incorporates overcurrent protection to safeguard the circuit from excessive current flow.
5. Undervoltage Lockout: The IC includes undervoltage lockout functionality to prevent operation below a certain voltage threshold.
6. Soft Start Capability: This feature enables a gradual increase in output voltage during startup, reducing stress on components.

Advantages and Disadvantages

Advantages

• High-performance power management solution
• Wide input voltage range allows for versatile applications
• Adjustable frequency and duty cycle provide flexibility
• Overcurrent protection enhances system reliability
• Soft start capability reduces startup stress

Disadvantages

• Limited pin configuration options
• May require additional external components for specific applications

Working Principles

UCC3809DTR-2G4 operates based on the voltage mode control technique. It compares the feedback voltage 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 regulates the output voltage. By continuously monitoring and adjusting the duty cycle, the IC maintains a stable output voltage despite variations in input voltage or load conditions.

Detailed Application Field Plans

UCC3809DTR-2G4 finds applications 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 6. Renewable energy systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to UCC3809DTR-2G4 are: 1. LM2576-ADJ 2. LT1073 3. MC34063A 4. UC3843 5. TPS5430

These models can be considered as alternatives based on specific requirements and design constraints.

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