LNK501GN-TL

AC DC Converters, Offline Switchers Overview

The LNK501GN-TL is a LinkSwitch family AC/DC converter IC designed for low-cost, high-reliability power supplies. It integrates a 700 V MOSFET and control circuitry in an SMD-8 package. The device supports universal input voltages from 85 VAC to 265 VAC. It delivers up to 3 W output power at 85–265 VAC and 4 W at 230 VAC. Key electrical parameters include a switching frequency of 42 kHz, maximum duty cycle of 80%, and quiescent supply current of 1.06 mA. The output voltage is specified at 5.6 V with an output current capability of 267 mA. Operating temperature ranges from -40 °C to +150 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates primary-side regulation and high-voltage MOSFET for simplified design
• Provides constant voltage and constant current (CV/CC) charging capabilities
• Includes system-level thermal protection and current limiting
• Supports wide input voltage range for global compatibility

AC DC Converters, Offline Switchers Applications

• Adapters and chargers for mobile phones, PDAs, and digital cameras
• Battery chargers for portable audio equipment and razors
• Standby power supplies for televisions and consumer electronics
• Low-power AC/DC converters for white goods and home appliances

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'TL' corresponds to the required tape-and-reel packaging configuration as indicated by distributor listings. Confirm RoHS compliance status through the manufacturer's official documentation or product compliance database prior to integration. Ensure the SMD-8 package footprint matches the target PCB layout specifications. Validate that the 42 kHz switching frequency aligns with EMI filter requirements for the final application environment.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-sensitive applications requiring integrated CV/CC functionality without secondary side components. It serves as a direct replacement for linear solutions in systems where size reduction and efficiency improvements are prioritized. Consider the 42 kHz operating frequency when designing magnetic components to balance size against core losses. Verify that the 3 W to 4 W power envelope meets the load requirements while maintaining acceptable thermal performance within the specified ambient temperature range.

AC DC Converters, Offline Switchers Part Context

The LNK501GN-TL belongs to the LinkSwitch family from Power Integrations, which combines a high-voltage power switch with intelligent control circuitry. This series targets low-power offline switch-mode power supplies. The 'GN' designation typically indicates a green (RoHS compliant) lead-free package variant. The part is engineered to reduce bill-of-materials count by eliminating optocouplers and feedback networks found in traditional isolated designs.

AC DC Converters, Offline Switchers Replacement Considerations

Official substitutes within the same family include LNK500GN-TL for standard CV applications and LNK520GN-TL for optimized EMI performance. Cross-family replacements such as LNK305GN-TL offer different power levels and switching frequencies. Verify pinout compatibility and thermal characteristics when transitioning between these variants.