UCC2810NG4

Overview

Category: Integrated Circuit (IC)

Use: Voltage Mode PWM Controller

Characteristics: - High-performance voltage mode pulse width modulation (PWM) controller - Designed for use in switch-mode power supplies - Provides precise control of the output voltage and current - Offers protection features such as overvoltage, undervoltage, and overcurrent protection

Package: DIP-8 (Dual In-Line Package with 8 pins)

Essence: UCC2810NG4 is a voltage mode PWM controller that plays a crucial role in regulating the output voltage and current in switch-mode power supplies.

Packaging/Quantity: UCC2810NG4 is typically sold in reels or tubes containing multiple units. The exact quantity depends on the supplier and customer requirements.

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: 3mA (typical)
• Output Current: 200mA (maximum)

Pin Configuration

UCC2810NG4 follows the standard pin configuration for DIP-8 packages:

```

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| | --| Vref Vcc|-- --| COMP GND|-- --| FB RTN|-- --| CS OUT|-- --| INV N/C|-- --| SYNC N/C|-- --| UVLO N/C|-- |___________| ```

Functional Features

1. Voltage Mode Control: UCC2810NG4 utilizes voltage mode control to regulate the output voltage and maintain stability in switch-mode power supplies.
2. Precise Current Limiting: The controller incorporates a current sense (CS) pin that enables accurate current limiting, protecting the power supply and connected devices.
3. Protection Mechanisms: UCC2810NG4 offers various protection features, including overvoltage protection (OVP), undervoltage lockout (UVLO), and overcurrent protection (OCP).
4. Wide Frequency Range: The device supports a wide frequency range of 50kHz to 1MHz, allowing flexibility in power supply design.

Advantages

• High-performance voltage mode control ensures stable and efficient power supply operation.
• Precise current limiting protects the power supply and connected devices from excessive current.
• Integrated protection mechanisms enhance system reliability and prevent damage due to voltage or current anomalies.
• Wide frequency range provides flexibility for different power supply applications.

Disadvantages

• Limited output current capability (maximum 200mA) may restrict usage in high-power applications.
• DIP-8 package may not be suitable for space-constrained designs requiring smaller form factors.

Working Principles

UCC2810NG4 operates based on the voltage mode control principle. It compares the feedback voltage (FB) with a reference voltage (Vref) 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 switch in the switch-mode power supply. By regulating the duty cycle, the controller maintains the desired output voltage and current.

Application Field Plans

UCC2810NG4 finds extensive application in various switch-mode power supply designs, including but not limited to: - AC/DC converters - DC/DC converters - LED drivers - Battery chargers - Industrial power supplies

Alternative Models

1. UC3842: A popular alternative offering similar functionality and performance.
2. TL494: Another widely used PWM controller with additional features.
3. SG3525: Suitable for higher power applications and offers enhanced protection mechanisms.

These alternative models can be considered based on specific application requirements, availability, and cost considerations.

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