LNK304DG

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low-cost, energy-efficient power conversion solution - Designed for offline flyback converters - Provides accurate constant voltage (CV) and constant current (CC) regulation - Suitable for applications requiring output power up to 10 W - Incorporates a 700 V power MOSFET, oscillator, simple on/off control scheme, and high-voltage startup circuitry - Enables the design of compact and reliable power supplies

Package: SO-8C

Essence: The LNK304DG is an integrated circuit that combines multiple components required for power management in a single package. It offers a cost-effective and efficient solution for offline flyback converters.

Packaging/Quantity: The LNK304DG is typically sold in reels or tubes containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

Input Voltage Range: 85 VAC to 265 VAC
Output Power: Up to 10 W
Output Voltage: Configurable based on application requirements
Frequency Range: 66 kHz to 132 kHz
Operating Temperature Range: -40°C to +150°C
Maximum Junction Temperature: +150°C
Package Type: SO-8C

Pin Configuration

The LNK304DG features an SO-8C package with the following pin configuration:

Drain
Source
Feedback
Ground
Sense
Vcc
Control
Control

Functional Features

Accurate Constant Voltage (CV) and Constant Current (CC) Regulation: The LNK304DG ensures stable and precise output voltage and current levels, providing reliable power supply performance.
High-Voltage Startup Circuitry: The integrated high-voltage startup circuit allows the IC to operate directly from the AC line voltage, eliminating the need for an auxiliary power supply.
Simple On/Off Control Scheme: The control pin enables easy on/off control of the IC, simplifying the overall system design.
Built-in Protection Features: The LNK304DG incorporates various protection mechanisms such as overvoltage protection (OVP), overload protection (OLP), and thermal shutdown, ensuring safe operation under different conditions.

Advantages

Cost-effective solution for power management applications
Compact and reliable design
High efficiency and energy-saving capabilities
Wide input voltage range for versatile applications
Integrated protection features enhance system safety

Disadvantages

Limited output power capability (up to 10 W)
Requires external components for complete power supply implementation
Not suitable for high-power applications

Working Principles

The LNK304DG operates based on a flyback converter topology. It utilizes a high-voltage MOSFET to switch the primary side of the transformer, generating the required voltage and current levels for the secondary side. The IC incorporates an oscillator that controls the switching frequency and duty cycle, ensuring accurate regulation of the output voltage and current. The feedback pin monitors the output and adjusts the control signal accordingly to maintain the desired output characteristics.

Detailed Application Field Plans

The LNK304DG is commonly used in various low-power applications, including but not limited to: - LED lighting systems - Battery chargers - Home appliances - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

LNK302DG
LNK303DG
LNK305DG
LNK306DG
LNK307DG

These alternative models offer similar functionality and are compatible with the LNK304DG, providing flexibility in design choices for power management applications.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق LNK304DG في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of LNK304DG in technical solutions:

Q: What is LNK304DG? A: LNK304DG is an integrated offline switcher IC designed for low power applications, providing primary-side regulation without the need for an optocoupler.
Q: What are the typical applications of LNK304DG? A: LNK304DG is commonly used in various low-power applications such as LED lighting, auxiliary power supplies, and standby power supplies.
Q: What is the input voltage range supported by LNK304DG? A: LNK304DG supports a wide input voltage range from 85VAC to 265VAC, making it suitable for use in different regions with varying mains voltages.
Q: Can LNK304DG be used in dimmable LED lighting applications? A: No, LNK304DG does not support dimming functionality. It is primarily designed for non-dimmable LED lighting solutions.
Q: Does LNK304DG require an external heatsink for thermal management? A: The need for an external heatsink depends on the specific application and power dissipation requirements. In some cases, a small heatsink may be necessary.
Q: What is the maximum output power that can be achieved using LNK304DG? A: The maximum output power of LNK304DG depends on the specific design and operating conditions. It is typically suitable for low-power applications up to around 10W.
Q: Is LNK304DG suitable for high-voltage applications above 300V? A: No, LNK304DG is designed for low-voltage applications and has a maximum voltage rating of 265VAC. It is not recommended for use in high-voltage applications.
Q: Can LNK304DG operate in a wide temperature range? A: Yes, LNK304DG has a wide operating temperature range of -40°C to +150°C, allowing it to be used in various environmental conditions.
Q: Does LNK304DG provide protection features for overvoltage or overcurrent conditions? A: Yes, LNK304DG incorporates built-in protection features such as output overvoltage protection (OVP) and output short-circuit protection (SCP) to ensure safe operation.
Q: Are there any reference designs or application notes available for LNK304DG? A: Yes, the manufacturer of LNK304DG provides reference designs and application notes that can help engineers in implementing the IC into their technical solutions.