LM2599S-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2599S-5.0 is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a 150 kHz step-down voltage regulator. It provides a fixed 5V output with a maximum output current of 3A. The device accepts an input voltage range from 4.5V to 40V and operates within a junction temperature range of -40°C to 125°C. Housed in a surface-mount TO-263 (DDPAK-7) package, it utilizes pulse-width modulation for voltage-mode control.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator designed for high-efficiency step-down conversion
• Built-in fixed-frequency oscillator eliminates the need for external frequency compensation
• Includes internal freewheeling diode to simplify circuit design and reduce component count

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient buck conversion
• Pre-regulator circuits for switch-mode power supplies
• Linear regulator pre-regulators to improve thermal performance

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the required RoHS compliance status, typically indicated by NOPB. Confirm the specific package variant aligns with the intended PCB footprint. Ensure the fixed 5.0V output specification meets the target load requirements without modification.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required at up to 3A with minimal external components. It is suitable for applications where a 150 kHz switching frequency allows for smaller passive filters compared to lower-frequency alternatives. Consider thermal management due to the power dissipation inherent in linear-like dropout regions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SIMPLE SWITCHER family of switching regulators, which are characterized by their ease of use and integrated protection features. The LM2599 series specifically targets higher current applications than the LM2596, offering robust performance in compact surface-mount packages for industrial and commercial power designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2599SX-5.0/NOPB is a verified equivalent part number representing the same electrical specifications and functionality.