LNK632DG

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low power consumption - High efficiency - Compact size - Wide input voltage range - Over-temperature protection - Over-voltage protection - Short-circuit protection

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

Essence: LNK632DG is a power management IC designed to provide efficient and reliable power conversion for various electronic devices.

Packaging/Quantity: LNK632DG is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 85V AC to 265V AC
• Output Voltage: 5V DC
• Output Current: 500mA
• Operating Temperature Range: -40°C to +150°C
• Efficiency: Up to 90%
• Standby Power Consumption: Less than 100mW

Detailed Pin Configuration

1. VDD: Power supply input
2. BP/M: Bypass/Multifunction pin
3. FB: Feedback pin
4. GND: Ground
5. D: Drain pin
6. S: Source pin
7. NC: No connection

Functional Features

• Primary-side control eliminates the need for an optocoupler
• Auto-restart protection feature ensures continuous operation in case of fault conditions
• Frequency jittering reduces EMI emissions
• Built-in thermal shutdown protection prevents overheating
• Cycle-by-cycle current limit provides short-circuit protection

Advantages

• High efficiency results in reduced power consumption and lower operating costs
• Compact size allows for space-saving designs
• Wide input voltage range enables compatibility with different power sources
• Over-temperature, over-voltage, and short-circuit protections enhance device safety and reliability
• Primary-side control simplifies circuit design and reduces component count

Disadvantages

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

Working Principles

LNK632DG utilizes primary-side control to regulate the output voltage. It integrates a power MOSFET, controller, and various protection features into a single chip. The IC operates by modulating the duty cycle of the power MOSFET based on feedback from the output voltage. This control mechanism ensures stable and efficient power conversion.

Detailed Application Field Plans

1. Power supplies for consumer electronics such as televisions, set-top boxes, and audio systems.
2. AC-DC adapters for laptops, tablets, and smartphones.
3. LED lighting applications.
4. Industrial power supplies for automation equipment.
5. Power management in automotive electronics.

Detailed and Complete Alternative Models

1. LNK632EG: Similar specifications and features, but with an SMD-8 (Surface Mount Device 8 pins) package.
2. LNK632PG: Higher output current of 1A, suitable for applications requiring more power.
3. LNK632FG: Enhanced EMI performance for applications with strict electromagnetic compatibility requirements.

(Note: The alternative models listed above are for illustrative purposes only and may not represent all available alternatives.)

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