LM2599SX-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2599SX-12/NOPB is a SIMPLE SWITCHER step-down switching regulator from Texas Instruments, housed in a TO-263-8 (D2PAK) surface-mount package. It provides a fixed 12 V output with a maximum load current of 3 A. The device operates over an input voltage range of 4.5 V to 40 V and features a fixed switching frequency of 150 kHz. It supports a junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for 3 A continuous load current
• Fixed internal switching frequency of 150 kHz for simplified external component selection
• Built-in thermal shutdown circuitry to protect against excessive heat
• Internal frequency compensation eliminates the need for external phase lead networks

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator circuits for switching regulators
• Efficient buck converters for general-purpose power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SX' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 'NOPB' designation indicates compliance with RoHS standards and absence of lead-based solder finishes. Ensure the TO-263-8 footprint matches the target PCB layout dimensions and thermal pad requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required at currents up to 3 A without the complexity of adjustable feedback loops. The fixed 150 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the thermal performance of the D2PAK package and ensure adequate copper area on the PCB for heat dissipation under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2599 family of SIMPLE SWITCHER regulators, designed to simplify power supply design through integrated control and power stages. The SX variant specifically denotes the surface-mount D2PAK package configuration, distinguishing it from through-hole or smaller SOT packages within the same electrical family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2599SX-12/NOPB