UCC3808AN-1G4

Product Overview

Category

UCC3808AN-1G4 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

UCC3808AN-1G4 is available in an 8-pin PDIP (Plastic Dual In-Line Package) package.

Essence

The essence of UCC3808AN-1G4 lies in its ability to efficiently regulate and control power in various electronic devices.

Packaging/Quantity

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

Specifications

• Input Voltage Range: 3V to 25V
• Output Voltage Range: 0.8V to VCC
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to 85°C
• Package Type: PDIP-8

Pin Configuration

```

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| | --|1 UCC 8|-- --|2 GND 7|-- --|3 FB 6|-- --|4 CS 5|-- |___________| ```

1. UCC: Supply voltage pin.
2. GND: Ground reference pin.
3. FB: Feedback pin for voltage regulation.
4. CS: Current sense pin for overcurrent protection.

Functional Features

• Voltage mode PWM control for precise regulation.
• Adjustable frequency and maximum duty cycle for flexibility.
• Overcurrent protection prevents damage to the circuit.
• Undervoltage lockout ensures proper operation under low voltage conditions.
• Soft start capability for smooth power-up.

Advantages and Disadvantages

Advantages

• Low-power consumption.
• Wide input voltage range allows for versatile applications.
• Adjustable frequency and duty cycle provide customization options.
• Overcurrent protection enhances circuit reliability.
• Soft start feature prevents sudden current surges.

Disadvantages

• Limited output voltage range.
• PDIP package may not be suitable for space-constrained designs.
• Requires external components for complete power management solution.

Working Principles

UCC3808AN-1G4 operates on the principle of voltage mode PWM control. It compares the feedback voltage (FB) with a reference voltage to generate an error signal. This error signal is then used to adjust the duty cycle of the PWM signal, which in turn regulates the output voltage. The CS pin monitors the current flowing through the load and triggers overcurrent protection if it exceeds a set threshold. The undervoltage lockout feature ensures that the IC operates within the specified voltage range.

Detailed Application Field Plans

UCC3808AN-1G4 finds application in various power management systems, including: - Switching power supplies - Battery chargers - LED drivers - Motor control circuits - DC-DC converters

Detailed and Complete Alternative Models

Some alternative models to UCC3808AN-1G4 are: - UCC3808A - UCC3808AD - UCC3808APW - UCC3808D

These models offer similar functionality and can be used as substitutes depending on specific requirements.

In conclusion, UCC3808AN-1G4 is a versatile voltage mode PWM controller IC used in power management applications. Its adjustable features, overcurrent protection, and wide input voltage range make it suitable for various electronic devices. However, designers should consider the limited output voltage range and package type when selecting this IC.