LM5000-3MTC/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM5000-3MTC/NOPB is a high-voltage switch-mode regulator IC manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It supports boost, flyback, and forward converter topologies with an input voltage range of 3.1V to 40V. The device offers an adjustable output up to 80V (switch) and delivers a switch current of 1.35A. It operates at selectable switching frequencies of 300kHz or 700kHz. Packaged in a 16-TSSOP case, it functions within a temperature range of -40°C to 125°C TJ.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports multiple converter topologies including boost, flyback, and forward configurations for flexible power design.
• Features wide input voltage capability suitable for various supply sources without requiring external level shifting.
• Includes integrated shutdown functionality to minimize quiescent current consumption during standby modes.

Voltage Regulators - DC DC Switching Regulators Applications

• AC-DC and DC-DC converter designs
• Motor drive systems
• Industrial control systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as the component originates from National Semiconductor but is now distributed under Texas Instruments branding. Confirm the specific suffix 'MTC' corresponds to the TSSOP package variant required for your PCB layout. Ensure compatibility with the intended switching frequency setting via external components before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing non-isolated or isolated power supplies requiring high input voltage tolerance. It is appropriate for applications needing adjustable output voltages up to 80V. Consider the thermal performance of the 16-TSSOP package relative to the expected load current and ambient operating conditions to ensure reliable long-term operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM5000 family of pulse width modulation controllers designed for high-voltage power control. It is often utilized in conjunction with gate drivers like the LM5112 to drive large power MOSFETs. The family provides efficient solutions for compact power supply designs in industrial and automotive environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM5000SD-3/NOPB serves as a pin-compatible alternative featuring a WSON-16 package instead of TSSOP. Verify that the footprint change is acceptable for the target application before substituting.