LM5000SD-3

Voltage Regulators - DC DC Switching Regulators Overview

The LM5000SD-3/NOPB is a high-voltage switching regulator IC from Texas Instruments, designed for boost and flyback topologies. It operates with an input voltage range of 3.1 V to 40 V and provides an adjustable output voltage starting at 1.295 V. The device supports a switch current of 1.35 A and features a programmable switching frequency between 300 kHz and 700 kHz. Packaged in a 16-WSON (5x5 mm) surface-mount format, it functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports boost, flyback, and forward converter topologies for versatile power conversion applications.
• Features internal compensation to simplify external component count and design complexity.
• Includes integrated soft-start functionality to limit inrush current during startup.
• Offers comprehensive protection mechanisms including overvoltage, undervoltage, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Automotive electronics power supplies
• General-purpose DC-DC conversion systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SD-3' against the manufacturer's official datasheet to confirm pinout and electrical specifications match your design requirements. Ensure the package type corresponds to the 16-WSON footprint. Confirm RoHS compliance status if required by your assembly process. Cross-reference ordering information directly with Texas Instruments or authorized distributors to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits requiring high input voltages up to 40 V with moderate output currents around 1.35 A. The adjustable frequency allows optimization for efficiency versus size trade-offs. Consider the thermal performance of the WSON package under maximum load conditions. Ensure the application does not require synchronous rectification, as this device uses a non-synchronous design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5000 family of high-voltage switching regulators. The family includes variants like the LM5000SD-6/NOPB which offers higher switching frequencies. These devices are commonly used in applications needing isolation or wide input voltage ranges. The LM5000 series is distinct from lower voltage regulators in its ability to handle automotive and industrial bus voltages directly.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers for LM5000SD-3/NOPB were not found in the provided source material. Designers should consult Texas Instruments documentation for potential cross-references or evaluate other parts within the LM5000 family based on specific frequency and current requirements.