LM3488MM/NOPB

DC DC Switching Controllers Overview

The LM3488MM/NOPB is a high-efficiency low-side N-channel MOSFET controller from Texas Instruments, designed for versatile DC-DC converter topologies including Boost, Flyback, and SEPIC. It operates with a switching frequency range of 100 kHz to 1 MHz, allowing for compact solution sizes. The device supports output voltages up to 300 V and can drive loads with currents up to 10 A. It features a maximum duty cycle of 100% and functions within an operating temperature range of -40°C to +125°C. Housed in an 8-pin VSSOP package, it draws a typical supply current of 2.7 mA.

DC DC Switching Controllers Feature Summary

• Supports multiple converter topologies such as Boost, Flyback, and SEPIC using a low-side N-channel MOSFET configuration.
• Enables flexible design through adjustable switching frequencies ranging from 100 kHz to 1 MHz via a single external resistor.
• Provides robust protection mechanisms including thermal shutdown, short-circuit protection, and overvoltage protection.

DC DC Switching Controllers Applications

• General-purpose switch-mode power supplies requiring high efficiency
• Automotive electronics systems utilizing isolated or non-isolated converters
• Industrial power management modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix MM/NOPB to confirm the VSSOP-8 package and lead-free status. Ensure compatibility with your PCB footprint for the 8-pin small outline package. Confirm that the application voltage does not exceed the 300 V limit. Check for any automotive qualification requirements if used in vehicle applications, as standard versions may differ from Q-series parts.

DC DC Switching Controllers Selection Notes

Select this component when designing Boost, Flyback, or SEPIC converters requiring a low-side drive architecture. It is suitable for applications needing wide input voltage ranges and high output voltages up to 300 V. Consider the 10 A current capability and 100 kHz to 1 MHz frequency range for balancing size and efficiency. Ensure the thermal management strategy supports operation up to 125°C ambient temperature.

DC DC Switching Controllers Part Context

This part belongs to the LM3488 series of low-side MOSFET controllers. It shares functional similarities with the LM3478 but is optimized for higher voltage applications. The NOPB suffix indicates a lead-free and halogen-free compliant version manufactured by Texas Instruments. It is distinct from LED drivers like the LM3409 or other regulators in the PMIC portfolio.

DC DC Switching Controllers Replacement Considerations

The LM3478MM/NOPB is a related controller in the same family, often used for lower voltage boost applications. Verify pinout compatibility and electrical limits before substitution. No direct public substitute part numbers are confirmed for this specific high-voltage variant in the provided documentation.