INN2004K

AC DC Converters, Offline Switchers Overview

The INN2004K is a high-voltage integrated switch from the LinkSwitch-TN family, designed for offline flyback power supplies. It integrates a 700V power MOSFET with a high-voltage current source and control circuitry. The device operates from an AC line voltage range of 85 to 265 VAC or a DC input of 132 to 373 VDC. It supports output powers up to 5 W at 5 V/1 A. Key electrical parameters include a fixed switching frequency of 132 kHz, a peak current limit of 1.9 A, and a supply voltage range of 3.6 V to 18 V. The component is housed in a DIP-7 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700V power MOSFET with a high-voltage current source and control logic into a single monolithic chip.
• Features proprietary Cycle-by-Cycle Peak Current Mode Control (CCCMC) for precise regulation and protection.
• Includes automatic burst mode operation to minimize no-load power consumption while maintaining tight load regulation.
• Provides comprehensive protection mechanisms including over-temperature shutdown, cycle-by-cycle current limiting, and open-loop detection.

AC DC Converters, Offline Switchers Applications

• Adapters and chargers for mobile phones and portable devices
• Standby power supplies for consumer electronics
• Low-power battery chargers
• General-purpose isolated DC-DC converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix code on the datasheet to confirm pinout compatibility and thermal characteristics. Ensure the selected variant matches the required isolation voltage and packaging style for your PCB layout. Cross-reference the manufacturer's latest revision history to confirm RoHS compliance status and any design changes that may affect mounting or performance specifications.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring minimal external components and high reliability in low-power isolated designs. It is suitable where board space is constrained and efficiency standards require low no-load power draw. Consider the thermal performance of the DIP-7 package relative to the expected ambient temperature and power dissipation levels in the final enclosure.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-TN family, which is engineered for cost-effective, high-reliability power solutions. The family emphasizes simplicity by integrating multiple functions typically found in discrete designs. This approach reduces bill-of-materials count and simplifies the design process for engineers developing compact power adapters.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct replacements within the LinkSwitch-TN series with similar power ratings. Verify pin-to-pin compatibility if substituting with other variants. Ensure any alternative device meets the same input voltage range and output power requirements without compromising safety certifications.