LYT0005D

LED Driver IC Overview

The LYT0005D is an LED lighting driver IC from the LYTSwitch-0 series by Power Integrations. It integrates a 700 V power MOSFET, oscillator, open-loop control scheme, high-voltage switch current source, frequency jittering, cycle-by-cycle current limiting, and thermal shutdown circuitry into a single package. The device operates with a maximum input voltage of 308 VAC and a minimum of 85 VAC. It supports a switching frequency of 66 kHz and delivers an output current of 175 mA (MDCM). The component is housed in an SO-8C-7 package and functions within a temperature range of -40°C to +150°C.

LED Driver IC Feature Summary

• Integrates a 700 V power MOSFET and control logic to eliminate the need for bias windings or auxiliary power supplies.
• Features automatic restart circuitry that safely limits output power during fault conditions such as short circuits or open loops.
• Utilizes open-loop control architecture suitable for low-cost LED bulb replacement applications.

LED Driver IC Applications

• LED bulb replacement designs
• Offline AC/DC LED drivers
• General illumination systems

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., D, P, TL) against the manufacturer's datasheet to confirm pinout and packaging configuration. Confirm RoHS compliance status through official documentation. Check for obsolescence notices or PCN updates regarding marking and packing changes before finalizing procurement plans.

LED Driver IC Selection Notes

Select this component for cost-sensitive LED lighting projects requiring integrated offline control. Ensure the design accommodates the 700 V drain rating and 175 mA output capability. Verify that the application does not require dimming features, as the base LYTSwitch-0 architecture typically lacks native dimming interfaces without external modifications.

LED Driver IC Part Context

The LYT0005D belongs to the LYTSwitch-0 family, designed for high integration and low component count in LED drivers. This series combines power switching and control functions to simplify PCB layout and reduce system costs compared to discrete solutions.

LED Driver IC Replacement Considerations

Consult the official datasheet for direct pin-to-pin replacements within the same series. Verify electrical parameter compatibility for any cross-series substitutions.