UCC2808APW-1G4

Product Overview

Category

UCC2808APW-1G4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• Low-power current mode PWM controller
• Wide input voltage range
• Adjustable frequency and maximum duty cycle
• Integrated oscillator with programmable soft-start
• Overcurrent protection
• Under-voltage lockout

Package

UCC2808APW-1G4 is available in a small outline package (SOP) with 8 pins.

Essence

The essence of UCC2808APW-1G4 lies in its ability to efficiently regulate power in various electronic devices.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to VCC
• Maximum Duty Cycle: 100%
• Oscillator Frequency Range: 50kHz to 500kHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

UCC2808APW-1G4 features the following pin configuration:

1. COMP: Compensation pin for external compensation network.
2. CS: Current sense input for overcurrent protection.
3. GND: Ground reference for the IC.
4. FB: Feedback pin for output voltage regulation.
5. RT/CT: Timing resistor/capacitor connection for setting oscillator frequency.
6. VCC: Power supply input for the IC.
7. OUT: Output pin for driving external power MOSFET.
8. SS/TR: Soft-start/Tri-state pin for controlling startup behavior.

Functional Features

• Current mode control for improved stability and transient response.
• Adjustable frequency and maximum duty cycle to suit various applications.
• Integrated oscillator with programmable soft-start for controlled startup.
• Overcurrent protection ensures safe operation under fault conditions.
• Under-voltage lockout prevents operation below specified voltage levels.

Advantages and Disadvantages

Advantages

• Low-power consumption
• Wide input voltage range allows for versatile use
• Compact package size for space-constrained designs
• Integrated protection features enhance reliability
• Adjustable frequency and duty cycle provide flexibility

Disadvantages

• Limited output voltage range
• Requires external compensation network for optimal performance
• Not suitable for high-power applications

Working Principles

UCC2808APW-1G4 operates based on the current mode control technique. It compares the sensed current through the power MOSFET with a reference voltage to regulate the output voltage. The adjustable oscillator sets the switching frequency, while the soft-start feature controls the startup behavior. The IC continuously monitors the current sense input and provides overcurrent protection. Additionally, the under-voltage lockout ensures that the IC does not operate below the specified voltage threshold.

Detailed Application Field Plans

UCC2808APW-1G4 finds application in various power management scenarios, including but not limited to: - Switching power supplies - Battery chargers - LED drivers - DC-DC converters - Industrial automation systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to UCC2808APW-1G4 are: - UCC2808A-1 - UCC2808AD-1 - UCC2808AQ-1 - UCC2808D-1 - UCC2808N-1

These models offer similar functionality and characteristics, providing options for different design requirements.

In conclusion, UCC2808APW-1G4 is a low-power current mode PWM controller IC used in power management applications. Its adjustable frequency, maximum duty cycle, and integrated protection features make it suitable for various electronic devices. While it has limitations in terms of output voltage range and high-power applications, it offers advantages such as low-power consumption and wide input voltage range. The working principle involves current mode control, with an integrated oscillator and soft-start feature. It finds application in switching power supplies, battery chargers, LED drivers, DC-DC converters, and industrial automation systems. Alternative models like UCC2808A-1, UCC2808AD-1, UCC2808AQ-1, UCC2808D-1, and UCC2808N-1 can be considered based on specific design requirements.