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LNK305PN
+BOMIC OFFLINE SWITCH MULT TOP 8DIP
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ManufacturerPower Integrations
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Mfr. Part #LNK305PN
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In Stock7308
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Specifications
| Attribute | Value |
| Series | LinkSwitch®-TN |
| Part Status | Active |
| Base Product Number | LNK305 |
| Output Isolation | Non-Isolated |
| Internal Switch(s) | Yes |
| Voltage - Breakdown | 700V |
| Topology | Buck, Buck-Boost, Flyback |
| Duty Cycle | 69% |
| Frequency - Switching | 66kHz |
| Fault Protection | Current Limiting, Open Loop, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Package | 8-DIP (0.300", 7.62mm), 7 Leads |
| Supplier Device Package | 8-PDIP-B |
| Mounting Type | Through Hole |
| Packaging | Tube |
Overview
Description
The LNK305PN is a monolithic switching mode power supply IC from Power Integrations, part of the LinkSwitch-TN series. It is primarily used in low-power, non-isolated AC-DC converter applications such as battery chargers, small appliances, and LED drivers. The LNK305PN integrates a 700V power MOSFET, oscillator, high-voltage start-up, current limit, and thermal shutdown circuitry, simplifying design and reducing component count.
Key features include:
- Efficient Operation: Supports up to 360 mA output current with minimal external components.
- Compact Design: Requires fewer external components, saving PCB space.
- Enhanced Reliability: Includes built-in protection mechanisms like thermal shutdown and auto-restart for short circuits.
- Wide Input Voltage Range: Suitable for universal input applications (85 to 265 VAC).
- Eco-Friendly: Complies with energy efficiency standards due to low standby power consumption.
The LNK305PN is available in a DIP-8 package, facilitating easy integration into existing designs, and is ideal for cost-sensitive applications where energy efficiency and reliability are critical.
Key features include:
- Efficient Operation: Supports up to 360 mA output current with minimal external components.
- Compact Design: Requires fewer external components, saving PCB space.
- Enhanced Reliability: Includes built-in protection mechanisms like thermal shutdown and auto-restart for short circuits.
- Wide Input Voltage Range: Suitable for universal input applications (85 to 265 VAC).
- Eco-Friendly: Complies with energy efficiency standards due to low standby power consumption.
The LNK305PN is available in a DIP-8 package, facilitating easy integration into existing designs, and is ideal for cost-sensitive applications where energy efficiency and reliability are critical.
Equivalent
The LNK305PN is a power integration IC used for switch-mode power supplies. Equivalent products include:
1. Power Integrations LNK304P - a similar model with slightly different specifications.
2. Power Integrations LNK306P or LNK307P - offer higher power capabilities.
3. ON Semiconductor NCP series - such as NCP1014, which provides integrated controller and MOSFET.
4. STMicroelectronics VIPer series - e.g., VIPer12A, which combines a PWM controller with a high-voltage power MOSFET.
Always check datasheets for specific application compatibility.
1. Power Integrations LNK304P - a similar model with slightly different specifications.
2. Power Integrations LNK306P or LNK307P - offer higher power capabilities.
3. ON Semiconductor NCP series - such as NCP1014, which provides integrated controller and MOSFET.
4. STMicroelectronics VIPer series - e.g., VIPer12A, which combines a PWM controller with a high-voltage power MOSFET.
Always check datasheets for specific application compatibility.
Features
The LNK305PN is part of the LinkSwitch-TN series by Power Integrations, designed for low-power offline switcher applications. Key features include:
1. Integrated Design: Combines a high-voltage power MOSFET with a controller, reducing external components and simplifying designs.
2. Output Power: Supports non-isolated buck, boost, and flyback configurations, delivering up to 4.5W of power.
3. Efficiency: High efficiency across the load range, typically above 70%.
4. No Load Power Consumption: Less than 30mW at 265VAC input.
5. Protection Features: Includes over-current, over-temperature, and over-voltage protection mechanisms.
6. Programmable Current Limit: Allows flexibility in output power design.
7. Wide Input Range: Works with universal AC input (85 to 265VAC).
8. Package: Available in a DIP-8 package, which is easy to use in various applications.
The LNK305PN is ideal for applications like home appliances, industrial systems, and consumer electronics, where low power and high efficiency are required.
1. Integrated Design: Combines a high-voltage power MOSFET with a controller, reducing external components and simplifying designs.
2. Output Power: Supports non-isolated buck, boost, and flyback configurations, delivering up to 4.5W of power.
3. Efficiency: High efficiency across the load range, typically above 70%.
4. No Load Power Consumption: Less than 30mW at 265VAC input.
5. Protection Features: Includes over-current, over-temperature, and over-voltage protection mechanisms.
6. Programmable Current Limit: Allows flexibility in output power design.
7. Wide Input Range: Works with universal AC input (85 to 265VAC).
8. Package: Available in a DIP-8 package, which is easy to use in various applications.
The LNK305PN is ideal for applications like home appliances, industrial systems, and consumer electronics, where low power and high efficiency are required.
Pinout
The LNK305PN is a member of the LinkSwitch-TN family by Power Integrations, which is designed for use in low-power, offline switcher applications. It is housed in an 8-pin DIP (Dual Inline Package).
Pin Configuration and Functions:
1. Pin 1 (BYPASS/MULTI-FUNCTION): This pin is connected to an external bypass capacitor and sets the operating modes and provides overload protection.
2. Pin 2 (FEEDBACK): Used for feedback control to regulate output voltage or current by connecting to an optocoupler or a resistor divider network.
3. Pin 3 (SOURCE): This pin is internally connected to the primary side ground and acts as the power return path for the IC.
4. Pin 4 (SOURCE): Same function as Pin 3, connected to the primary side ground.
5. Pin 5 (SOURCE): Same function as Pin 3, connected to the primary side ground.
6. Pin 6 (SOURCE): Same function as Pin 3, connected to the primary side ground.
7. Pin 7 (DRAIN): Connected to the switching MOSFET drain; it is the input pin that connects to the primary winding of the transformer.
8. Pin 8 (DRAIN): Same function as Pin 7, connected to the MOSFET drain.
The LNK305PN is used in applications requiring high efficiency and low component count.
Pin Configuration and Functions:
1. Pin 1 (BYPASS/MULTI-FUNCTION): This pin is connected to an external bypass capacitor and sets the operating modes and provides overload protection.
2. Pin 2 (FEEDBACK): Used for feedback control to regulate output voltage or current by connecting to an optocoupler or a resistor divider network.
3. Pin 3 (SOURCE): This pin is internally connected to the primary side ground and acts as the power return path for the IC.
4. Pin 4 (SOURCE): Same function as Pin 3, connected to the primary side ground.
5. Pin 5 (SOURCE): Same function as Pin 3, connected to the primary side ground.
6. Pin 6 (SOURCE): Same function as Pin 3, connected to the primary side ground.
7. Pin 7 (DRAIN): Connected to the switching MOSFET drain; it is the input pin that connects to the primary winding of the transformer.
8. Pin 8 (DRAIN): Same function as Pin 7, connected to the MOSFET drain.
The LNK305PN is used in applications requiring high efficiency and low component count.
Manufacturer
The LNK305PN is manufactured by Power Integrations, Inc. Power Integrations is a semiconductor company that specializes in developing and supplying high-performance electronic components for power conversion. Their products are used in a wide range of applications, including consumer electronics, appliances, industrial systems, and renewable energy systems. The company is known for its innovative technologies that enable energy-efficient power conversion, helping reduce energy consumption and environmental impact.
Application
The LNK305PN is a highly integrated monolithic switching power supply IC used in various low-power applications. Its primary application areas include:
1. Appliances: Ideal for powering control circuitry in household appliances like coffee makers, washing machines, and microwave ovens.
2. Lighting: Used in LED drivers and compact fluorescent lamp ballasts.
3. Industrial Controls: Suitable for powering control circuits in industrial automation and process control.
4. Consumer Electronics: Found in chargers, adapters, and power supplies for devices like routers and modems.
5. Smart Meters: Used in power management for smart utility meters.
Its ability to deliver efficient power conversion in a compact form makes it suitable for devices requiring low standby power consumption and high reliability.
1. Appliances: Ideal for powering control circuitry in household appliances like coffee makers, washing machines, and microwave ovens.
2. Lighting: Used in LED drivers and compact fluorescent lamp ballasts.
3. Industrial Controls: Suitable for powering control circuits in industrial automation and process control.
4. Consumer Electronics: Found in chargers, adapters, and power supplies for devices like routers and modems.
5. Smart Meters: Used in power management for smart utility meters.
Its ability to deliver efficient power conversion in a compact form makes it suitable for devices requiring low standby power consumption and high reliability.
Package
The LNK305PN is housed in a DIP-7 package, which is a standard dual in-line package with 7 pins. It is commonly used for power supply applications, offering an integrated approach to switching power supply design.
