FSDL321L - English Editing Encyclopedia Entry

Product Overview

Category

FSDL321L belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in electronic devices for power management and control.

Characteristics

• FSDL321L is a low-power offline switcher with built-in high-voltage power MOSFET.
• It operates at a fixed frequency, providing precise control over power conversion.
• The device offers various protection features such as over-temperature, over-voltage, and over-current protection.

Package

The FSDL321L is available in a compact and industry-standard SOP-7 package.

Essence

The essence of FSDL321L lies in its ability to efficiently regulate and convert power in electronic devices.

Packaging/Quantity

The FSDL321L is typically packaged in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 85V AC to 265V AC
• Output Power: Up to 12W
• Operating Frequency: 66 kHz
• Standby Power Consumption: Less than 100 mW
• Efficiency: Up to 85%
• Operating Temperature Range: -40°C to +105°C

Detailed Pin Configuration

The FSDL321L has the following pin configuration:

1. VDD: Power supply input
2. Drain: High-voltage power MOSFET drain connection
3. Source: High-voltage power MOSFET source connection
4. FB: Feedback pin for voltage regulation
5. GND: Ground reference
6. CS: Current sense pin for current regulation
7. VCC: Supply voltage for internal control circuitry

Functional Features

• Integrated high-voltage power MOSFET eliminates the need for an external switch.
• Fixed-frequency operation ensures stable and predictable power conversion.
• Built-in protection features safeguard against over-temperature, over-voltage, and over-current conditions.
• Low standby power consumption enhances energy efficiency.

Advantages and Disadvantages

Advantages

• Compact size and industry-standard package make it suitable for various applications.
• High efficiency helps reduce power consumption and heat generation.
• Integrated protection features enhance the safety and reliability of electronic devices.

Disadvantages

• Limited output power capability may not be suitable for high-power applications.
• Fixed-frequency operation may not provide flexibility in certain scenarios.

Working Principles

The FSDL321L operates based on a flyback converter topology. It regulates the input voltage by switching the high-voltage power MOSFET on and off at a fixed frequency. This switching action allows for efficient power conversion and control. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the switch to maintain a stable output.

Detailed Application Field Plans

The FSDL321L is commonly used in the following applications:

1. Power adapters for consumer electronics
2. LED lighting systems
3. Home appliances
4. Industrial automation equipment
5. Battery chargers

Detailed and Complete Alternative Models

1. FSDL0165RN: Similar low-power offline switcher with integrated MOSFET, but with lower output power capability.
2. FSDL0365RN: Higher power version of FSDL0165RN, suitable for applications requiring more output power.
3. FSDL0565RN: Further enhanced version with additional protection features and wider operating temperature range.

These alternative models offer similar functionality and can be considered as substitutes for the FSDL321L depending on specific application requirements.

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