LM2599S-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2599S-ADJ/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a 150-kHz step-down voltage regulator. It delivers up to 3 A of output current with an input voltage range of 4.5 V to 40 V. The adjustable output voltage spans from 1.2 V to 37 V. Housed in a TO-263-7 surface-mount package, it operates within a temperature range of -40°C to +125°C and features a typical quiescent current of 5 mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator designed for high-efficiency step-down conversion
• Built-in fixed-frequency oscillator simplifies external component requirements
• Internal thermal shutdown and current limit protection ensure operational reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring buck conversion
• Pre-regulators 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 compliance and RoHS adherence. Confirm the package designation matches the required TO-263-7 footprint for PCB layout compatibility. Ensure the adjustable variant aligns with the target output voltage design rather than a fixed-voltage alternative.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 3 A buck converter is needed with an input voltage up to 40 V. The adjustable output allows flexibility for various load requirements. Consider the TO-263-7 package for adequate thermal dissipation in surface-mount applications without excessive heatsinking.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2599 family of SIMPLE SWITCHER converters. It shares architectural similarities with the LM2596 but offers improved efficiency and higher output current capability. The series is widely recognized for reducing design time through integrated protection features and minimal external component counts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include the LM2599S-ADJ and LM2599SX-ADJ variants. Verify that any replacement maintains the same 150 kHz switching frequency and 3 A current rating to ensure circuit performance consistency.