UCC3804PWG4

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Mode PWM Controller

Characteristics: - High-performance voltage mode controller - Designed for use in switch-mode power supplies - Provides precise control of the output voltage and current - Offers protection features such as overvoltage and overcurrent protection - Suitable for various applications including industrial, automotive, and consumer electronics

Package: PowerPAD SOIC (Small Outline Integrated Circuit)

Essence: UCC3804PWG4 is a voltage mode PWM controller that enables efficient regulation of power supplies by maintaining stable output voltage and current.

Packaging/Quantity: The UCC3804PWG4 is available in a PowerPAD SOIC package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 7V to 20V
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to 85°C
• Maximum Duty Cycle: 100%
• Oscillator Frequency Range: 50kHz to 500kHz
• Error Amplifier Gain Bandwidth: 2MHz
• Soft Start Time: Adjustable

Detailed Pin Configuration

The UCC3804PWG4 has the following pin configuration:

1. COMP: Compensation pin for error amplifier
2. FB: Feedback pin for regulating the output voltage
3. CS: Current sense pin for monitoring the load current
4. GND: Ground reference pin
5. VREF: Reference voltage pin for setting the output voltage level
6. RT/CT: Timing resistor/capacitor connection pin for oscillator frequency adjustment
7. OUT: Output pin for connecting to the power stage
8. VCC: Supply voltage pin

Functional Features

• Voltage mode control with adjustable duty cycle
• Error amplifier for precise regulation of output voltage
• Soft start function to prevent inrush current
• Overvoltage protection to safeguard the load and power supply
• Overcurrent protection to prevent damage to the power stage
• Adjustable oscillator frequency for flexibility in design

Advantages and Disadvantages

Advantages: - High-performance controller for efficient power supply regulation - Wide input voltage range allows for versatile applications - Comprehensive protection features enhance system reliability - Adjustable soft start time prevents excessive inrush current - Compact PowerPAD SOIC package facilitates space-saving designs

Disadvantages: - Limited operating temperature range (-40°C to 85°C) - Requires external components for complete power supply implementation - May not be suitable for high-power applications due to its small package size

Working Principles

The UCC3804PWG4 operates on the principle of voltage mode control. It compares the feedback voltage (FB) with a reference voltage (VREF) to generate an error signal. This error signal is amplified by the internal error amplifier and compared with the ramp signal generated by the oscillator. The resulting PWM signal controls the duty cycle of the output voltage, regulating it to match the desired level.

Detailed Application Field Plans

The UCC3804PWG4 can be used in various applications, including:

1. Industrial Power Supplies: Provides stable and efficient power regulation for industrial equipment such as motor drives, inverters, and control systems.
2. Automotive Electronics: Enables precise control of power supplies in automotive applications like electric vehicles, battery chargers, and LED lighting systems.
3. Consumer Electronics: Facilitates reliable power management in consumer electronic devices such as televisions, audio systems, and computer peripherals.

Detailed and Complete Alternative Models

1. UCC3804N: DIP-8 package, similar specifications and features
2. UCC3804D: SOIC-8 package, similar specifications and features
3. UCC3804PW: TSSOP-8 package, similar specifications and features

These alternative models offer similar functionality to the UCC3804PWG4 and can be considered as substitutes based on specific design requirements.

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