FAN4801MY

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: SOP-8 (Small Outline Package)
• Essence: Voltage Mode PWM Controller
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 9V to 30V
• Output Voltage Range: 0.8V to 7.5V
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to +85°C
• Frequency Range: 50kHz to 500kHz
• Output Current: Up to 2A

Detailed Pin Configuration

The FAN4801MY IC has the following pin configuration:

1. COMP: Compensation Pin
2. FB: Feedback Pin
3. VCC: Supply Voltage Pin
4. GND: Ground Pin
5. CS: Current Sense Pin
6. RT/CT: Timing Components Pin
7. SS/TR: Soft-Start/Shutdown Pin
8. OUT: Output Pin

Functional Features

• Voltage mode control for high efficiency power management
• Adjustable output voltage and frequency range
• Overcurrent protection with adjustable current limit
• Soft-start and shutdown functionality for smooth operation
• Error amplifier for precise regulation
• External compensation for stability optimization

Advantages and Disadvantages

Advantages: - High efficiency power management - Wide input and output voltage range - Adjustable frequency for flexibility - Overcurrent protection for system safety - Soft-start feature for smooth operation

Disadvantages: - Limited maximum output current (up to 2A) - Requires external compensation for stability optimization

Working Principles

The FAN4801MY is a voltage mode PWM controller that regulates the output voltage based on the feedback received from the FB pin. It compares the feedback voltage with a reference voltage and adjusts the duty cycle of the PWM signal accordingly. By controlling the duty cycle, the IC regulates the output voltage to the desired level.

The CS pin is used for current sensing, allowing the IC to monitor the load current and provide overcurrent protection. The RT/CT pin is used to set the frequency of the PWM signal, while the SS/TR pin controls the soft-start and shutdown functionality.

Detailed Application Field Plans

The FAN4801MY is commonly used in various power management applications, including:

1. DC-DC Converters: The IC can be used in buck, boost, or buck-boost converters to efficiently regulate the output voltage.
2. LED Lighting: It can be employed in LED drivers to control the current and brightness of LEDs.
3. Battery Chargers: The IC can be utilized in battery charging circuits to regulate the charging voltage and current.
4. Industrial Power Supplies: It finds application in industrial power supplies to ensure stable and efficient power delivery.

Detailed and Complete Alternative Models

Some alternative models to the FAN4801MY include:

1. LM2576: A popular voltage regulator IC with similar features and capabilities.
2. LT1370: A high-efficiency step-down switching regulator IC suitable for various power management applications.
3. TPS5430: A synchronous buck converter controller IC with adjustable output voltage and current limit.

These alternative models offer similar functionalities and can be considered as substitutes for the FAN4801MY depending on specific requirements.

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