FSL136MR

AC DC Converters, Offline Switchers Overview

The FSL136MR is a high-voltage integrated power switch designed for offline switch-mode power supplies. It combines a 650V avalanche-rated SenseFET with a current-mode PWM controller in an 8-pin PDIP package. Key electrical parameters include a switching on-resistance of 4Ω, a fixed operating frequency of 67kHz, and a peak output current capability of 26W. The device operates within a temperature range of -40°C to +105°C and features a low quiescent current of 1.8mA.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 650V avalanche-resistant SenseFET with a current-mode PWM controller to minimize external component count.
• Includes comprehensive protection mechanisms such as overvoltage protection, overload protection, output short-circuit protection, and thermal shutdown with hysteresis.
• Features an internal startup circuit and soft-start functionality to ensure reliable system initialization and reduced inrush current.

AC DC Converters, Offline Switchers Applications

• Offline flyback converters for home appliances
• Industrial motor control systems
• Smart grid infrastructure equipment
• LED television power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix and marking code against the official datasheet to confirm the exact variant. Ensure the procurement channel provides valid traceability documentation. Confirm that the packaging format matches the required assembly process. Check for any obsolescence notices or lifecycle status updates from the manufacturer before finalizing orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring minimal bill-of-materials complexity in offline power applications. The integrated nature reduces design size and weight compared to discrete solutions. Consider the 650V rating for standard universal input voltages. Evaluate the fixed frequency for EMI filter sizing and the thermal performance for the intended enclosure environment.

AC DC Converters, Offline Switchers Part Context

This part belongs to the Fairchild Power Switch (FPS) family, which merges power switching and control functions into a single monolithic IC. This integration approach simplifies the design of cost-effective, high-efficiency power supplies by reducing the number of discrete components typically required for gate driving and feedback loop compensation.

AC DC Converters, Offline Switchers Replacement Considerations

Direct pin-to-pin replacements may exist within the same FPS product line, such as variants with different current limit settings or frequency options. Verify compatibility by comparing the internal fuse ratings, UVLO thresholds, and thermal shutdown characteristics. Cross-reference with updated series if the original part is discontinued.