LM5021MMX-2/NOPB

AC DC Converters, Offline Switchers Overview

The LM5021MMX-2/NOPB is an AC/DC current mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 8 V to 30 V and supports boost and flyback topologies. The device features a switching frequency of 560 kHz with a maximum duty cycle of 80%. It provides an output drive current of 700 mA and draws a quiescent current of 2.5 mA. The component is housed in an MSOP-8 package and functions reliably across an operating temperature range from -40°C to +125°C.

AC DC Converters, Offline Switchers Feature Summary

• Implements peak current mode control for enhanced line and load regulation performance.
• Integrates high-side gate driver capability suitable for driving external power switches.
• Includes comprehensive protection mechanisms such as undervoltage lockout, overcurrent limiting, and thermal shutdown.

AC DC Converters, Offline Switchers Applications

• Isolated AC-DC power supplies
• Flyback converter designs
• Boost converter architectures

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free status and RoHS compliance during sourcing. Confirm the MSOP-8 package availability matches your PCB footprint requirements. Ensure the 560 kHz switching frequency aligns with your electromagnetic interference constraints. Validate that the 8 V to 30 V input range suits your target application voltage levels before finalizing procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing isolated AC-DC converters requiring current mode control. It is appropriate for applications needing a wide input voltage range up to 30 V. Consider its 700 mA output drive capability for selecting external MOSFETs. Evaluate the MSOP-8 package size against your board space limitations. Ensure the operating temperature range meets your environmental specifications.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LM5021 family of AC/DC controllers designed for offline power conversion. It serves as a core control element in switch-mode power supplies. The device replaces older legacy controllers while offering improved efficiency and integration. It is widely used in consumer electronics and industrial power adapters requiring compact solutions.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio. Verify if newer revisions offer updated packaging or extended temperature ranges. Ensure functional equivalence in terms of switching frequency and drive current capabilities.

AC DC Converters, Offline Switchers FAQ

What control topology does the LM5021MMX-2/NOPB support?

It supports both boost and flyback topologies using peak current mode control.

What is the maximum operating temperature for this controller?

The maximum operating temperature is +125°C.