UCC2813D-4G4

Product Overview

Category

UCC2813D-4G4 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 LED drivers.

Characteristics

• UCC2813D-4G4 is a high-performance current mode PWM controller.
• It operates with a wide input voltage range, making it suitable for different power supply designs.
• The device offers excellent line and load regulation, ensuring stable output voltages.
• It incorporates various protection features such as overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown.
• UCC2813D-4G4 provides precise control over switching frequency and duty cycle, enabling efficient power conversion.

Package

UCC2813D-4G4 is available in a small outline integrated circuit (SOIC) package. The package type ensures easy integration into circuit boards and facilitates heat dissipation.

Essence

The essence of UCC2813D-4G4 lies in its ability to regulate and control power supply systems efficiently. By providing accurate feedback and control mechanisms, it ensures stable and reliable power delivery.

Packaging/Quantity

UCC2813D-4G4 is typically sold in reels or tubes, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 0V to 30V
• Switching Frequency: 50kHz to 1MHz
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOIC-8

Detailed Pin Configuration

1. COMP: Compensation pin for external compensation network.
2. CS: Current sense input for current mode control.
3. GND: Ground reference for the IC.
4. VREF: Reference voltage output for feedback purposes.
5. FB: Feedback pin for voltage regulation.
6. RT/CT: Timing components connection for setting switching frequency and duty cycle.
7. VCC: Power supply input for the IC.
8. OUT: Output pin for driving external power devices.

Functional Features

• Current mode control for improved stability and transient response.
• Adjustable switching frequency and duty cycle for flexible power supply design.
• Soft-start function to prevent excessive inrush current during startup.
• Overvoltage protection (OVP) to safeguard against voltage spikes.
• Undervoltage lockout (UVLO) to ensure proper operation under low voltage conditions.
• Thermal shutdown protection to prevent overheating of the IC.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile power supply designs.
• Excellent line and load regulation ensure stable output voltages.
• Comprehensive protection features enhance system reliability.
• Compact SOIC package facilitates easy integration into circuits.
• Precise control over switching frequency and duty cycle enables efficient power conversion.

Disadvantages

• Limited output voltage range may not be suitable for certain applications requiring higher voltages.
• Requires external compensation network for optimal performance, adding complexity to the design.

Working Principles

UCC2813D-4G4 operates based on the current mode control technique. It compares the sensed current with a reference voltage to regulate the output voltage. By adjusting the duty cycle and switching frequency, it achieves the desired power conversion efficiency. The device continuously monitors various parameters such as input voltage, output voltage, and temperature to ensure safe and reliable operation.

Detailed Application Field Plans

UCC2813D-4G4 finds applications in a wide range of power supply systems, including: 1. Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. 2. Battery chargers for portable devices, electric vehicles, and renewable energy systems. 3. LED drivers for lighting applications, both residential and commercial.

Detailed and Complete Alternative Models

1. UCC2813-1: Similar to UCC2813D-4G4 but without the extended temperature range.
2. UCC2813-2: Lower voltage range variant suitable for low-power applications.
3. UCC2813-3: Higher voltage range variant for applications requiring higher output voltages.
4. UCC2813-5: Enhanced version with additional protection features for critical applications.

These alternative models offer similar functionality to UCC2813D-4G4 but may have variations in specifications or package types.

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