LM2599S-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2599S-12/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a step-down voltage regulator. It operates with a fixed 12 V output and supports up to 3 A load current. The device utilizes a buck topology and switches at a frequency of 150 kHz. It accepts an input voltage range between 4.5 V and 40 V. The component is housed in a TO-263-8 (D2PAK) surface-mount package. It features a typical quiescent current of 5 mA and functions reliably within a junction temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator designed for high-efficiency DC-DC conversion
• Includes internal frequency compensation and fixed-frequency oscillator for simplified design
• Provides thermal shutdown and current limit protection for operational robustness

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient step-down regulation
• Pre-regulator stages for linear post-regulator circuits
• Efficient on-card regulation for board-level power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status according to the manufacturer's latest documentation. Confirm the package designation matches the required TO-263-8 footprint for PCB layout compatibility. Ensure the fixed 12 V output variant aligns with the target circuit requirements rather than adjustable or other fixed voltage options.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from an input source ranging up to 40 V. The 3 A current capability suits moderate power applications where efficiency is prioritized over line regulation precision. Consider the TO-263-8 package for its thermal dissipation characteristics in surface-mount designs compared to smaller alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2599 series of SIMPLE SWITCHER regulators, which are widely used for general-purpose DC-DC conversion. The series offers various fixed output voltages and adjustable versions. The 'S' suffix indicates the surface-mount D2PAK package, while 'NOPB' denotes the non-platinum-lead compliant version manufactured by Texas Instruments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2599S-12/NOPB is the direct lead-free equivalent of the legacy LM2599S-12 part number. Designers transitioning from older inventory should verify that the pinout and electrical specifications remain identical to ensure drop-in compatibility without schematic modifications.