LNK302DN

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low power consumption - High efficiency - Wide input voltage range - Over-temperature protection - Over-voltage protection - Under-voltage lockout - Auto-restart protection

Package: DIP-7 (Dual In-line Package)

Essence: LNK302DN is a power management IC designed for low-power applications. It provides efficient and reliable power conversion with various built-in protections.

Packaging/Quantity: LNK302DN is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 85V AC to 265V AC
• Output Voltage: 5V DC
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +150°C
• Efficiency: Up to 85%
• Standby Power Consumption: Less than 50mW

Detailed Pin Configuration

LNK302DN has a total of 7 pins, which are as follows:

1. VDD: Power supply input pin.
2. BP/MODE: Bootstrap/MODE selection pin.
3. FB: Feedback pin for output voltage regulation.
4. GND: Ground reference pin.
5. DRAIN: High-voltage power MOSFET drain connection.
6. SOURCE: High-voltage power MOSFET source connection.
7. VCC: Supply voltage for internal control circuitry.

Functional Features

1. Low Power Consumption: LNK302DN is designed to minimize power losses, resulting in reduced energy consumption.
2. High Efficiency: The IC offers high conversion efficiency, ensuring optimal power transfer.
3. Wide Input Voltage Range: It can operate within a wide range of input voltages, making it suitable for various applications.
4. Over-Temperature Protection: LNK302DN incorporates over-temperature protection to prevent damage due to excessive heat.
5. Over-Voltage Protection: The IC safeguards against voltage spikes, protecting downstream components.
6. Under-Voltage Lockout: It includes under-voltage lockout functionality to ensure proper operation even at low input voltages.
7. Auto-Restart Protection: In the event of a fault or abnormal condition, the IC automatically restarts after a specified delay.

Advantages and Disadvantages

Advantages: - Low power consumption leads to energy savings. - High efficiency results in reduced heat dissipation. - Wide input voltage range allows for versatile applications. - Built-in protections enhance system reliability. - Auto-restart feature improves fault tolerance.

Disadvantages: - Limited output current may not be suitable for high-power applications. - DIP-7 package may require additional space compared to smaller packages.

Working Principles

LNK302DN utilizes a flyback converter topology to convert the high-voltage AC input into low-voltage DC output. The IC integrates a high-voltage power MOSFET, control circuitry, and protection features. It operates by switching the MOSFET on and off at high frequency, regulating the output voltage based on feedback from the FB pin. The built-in protections ensure safe operation and prevent damage to the IC and connected devices.

Detailed Application Field Plans

LNK302DN is commonly used in various low-power applications, including but not limited to: - LED lighting systems - Standby power supplies - Battery chargers - Home appliances - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LNK302DN are: - LNK304DN - LNK306DN - LNK308DN - LNK310DN

These models are part of the same IC family and provide comparable features and performance.

Note: The content provided above is a sample structure for an encyclopedia entry and may not reflect actual specifications or details of LNK302DN. Please refer to the product datasheet for accurate information.