UCC28511N - English Editing Encyclopedia Entry

Product Overview

Category

UCC28511N belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems to regulate and control voltage levels efficiently.

Characteristics

• UCC28511N is a high-performance, low-power, and versatile power management IC.
• It offers excellent voltage regulation and protection features.
• The IC operates over a wide input voltage range, making it suitable for diverse applications.
• It provides efficient power conversion with minimal power losses.

Package and Quantity

UCC28511N is available in a compact and industry-standard 8-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a quantity of 250 units.

Specifications

• Input Voltage Range: 4.5V to 65V
• Output Voltage Range: Adjustable from 0.8V to 60V
• Maximum Output Current: 1A
• Switching Frequency: Up to 2MHz
• Operating Temperature Range: -40°C to +125°C
• Control Method: Peak Current Mode Control
• Protection Features: Overvoltage Protection, Undervoltage Lockout, Overcurrent Protection

Pin Configuration

The UCC28511N IC has the following pin configuration:

```

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| | --| VCC GND |-- Pin 1: Ground (GND) --| FB EN |-- Pin 2: Feedback (FB) --| COMP SS |-- Pin 3: Compensation (COMP) --| CS RT |-- Pin 4: Current Sense (CS) --| VIN SW |-- Pin 5: Input Voltage (VIN) --| NC |-- Pin 6: No Connection (NC) --| NC |-- Pin 7: No Connection (NC) --| VREF NC |-- Pin 8: Reference Voltage (VREF) |___________| ```

Functional Features

• Peak Current Mode Control: UCC28511N utilizes peak current mode control to regulate the output voltage accurately.
• Adjustable Output Voltage: The IC allows for precise adjustment of the output voltage within a wide range.
• Overvoltage Protection: It incorporates protection mechanisms to prevent the output voltage from exceeding safe limits.
• Undervoltage Lockout: UCC28511N ensures that the system shuts down when the input voltage falls below a specified threshold.
• Overcurrent Protection: The IC safeguards against excessive current flow, protecting both the IC and the load.

Advantages and Disadvantages

Advantages

• High-performance power management IC suitable for various applications.
• Wide input voltage range enables compatibility with different power supply systems.
• Efficient power conversion minimizes energy losses.
• Compact package size facilitates easy integration into electronic devices.

Disadvantages

• Limited maximum output current of 1A may not be sufficient for high-power applications.
• Requires careful consideration of external components for optimal performance.

Working Principles

UCC28511N operates based on the peak current mode control technique. It continuously monitors the current flowing through the power switch and adjusts the duty cycle accordingly to maintain a stable output voltage. By modulating the switching frequency, it achieves efficient power conversion while providing necessary protections.

Application Field Plans

UCC28511N finds extensive application in various power supply systems, including but not limited to: - DC-DC converters - AC-DC converters - LED drivers - Battery chargers - Industrial power supplies

Alternative Models

For those seeking alternative options, the following models can be considered: - UCC28512N: Similar to UCC28511N with enhanced features and higher output current capability. - UCC28513N: A variant optimized for specific applications, offering additional protection features.

In conclusion, UCC28511N is a versatile power management IC that provides efficient voltage regulation and protection in a compact package. Its wide input voltage range and peak current mode control make it suitable for various power supply systems. While it has limitations in terms of maximum output current, careful consideration of alternative models can address specific requirements.