LM5021MM-2/NOPB

AC DC Converters, Offline Switchers Overview

The LM5021MM-2/NOPB is an AC-DC current mode PWM controller manufactured by Texas Instruments. It supports boost and flyback topologies with a supply voltage range of 8 V to 30 V. The device features a maximum switching frequency of 1 MHz, a maximum duty cycle of 50%, and operates within a temperature range of -40°C to +125°C. It utilizes a VSSOP-8 package.

AC DC Converters, Offline Switchers Feature Summary

• Current mode control architecture for efficient offline power conversion
• Integrated 0.7 A peak current gate driver
• Direct optocoupler interface capability
• Discontinuous conduction mode overload protection

AC DC Converters, Offline Switchers Applications

• Discontinuous conduction mode (DCM) flyback converters
• Industrial power supplies
• Smart meter switch-mode power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official documentation to confirm the 50% duty cycle limit characteristic. Ensure the VSSOP-8 package matches design requirements. Confirm RoHS compliance status through the manufacturer's latest datasheet revision before finalizing procurement specifications.

AC DC Converters, Offline Switchers Selection Notes

Select this component when a fixed 50% maximum duty cycle is required for transformer reset or safety isolation constraints. Compare against the LM5021-1 variant if higher duty cycle flexibility is needed. Evaluate the integrated gate drive strength against external MOSFET requirements.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LM5021 family of AC-DC controllers designed for high-efficiency isolated power supplies. It shares core features like low startup current and slope compensation with other variants in the series, differentiated primarily by packaging and duty cycle limits.

AC DC Converters, Offline Switchers Replacement Considerations

LM5021MM-1/NOPB offers identical functionality but allows up to 80% duty cycle.