LM2599T-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2599T-3.3/NOPB is a SIMPLE SWITCHER power converter from the LM2599 series, manufactured by Texas Instruments (formerly National Semiconductor). It is a step-down switching regulator configured for a fixed 3.3 V output with a maximum output current of 3 A. The device operates within an input voltage range of 4.5 V to 40 V and utilizes a buck topology at a typical switching frequency of 150 kHz. It is housed in a TO-220-7 through-hole package and supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator designed for high-efficiency step-down conversion
• Fixed internal oscillator eliminates external timing component requirements
• Built-in thermal shutdown circuitry protects against excessive heat generation
• Internal freewheeling diode simplifies circuit design and reduces component count

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient voltage regulation
• Pre-regulator stages for linear post-regulator circuits
• Battery-powered applications utilizing step-down conversion topologies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the specific package variant required, as the LM2599 series includes distinct SMD and through-hole options. Confirm the manufacturer designation, noting that Texas Instruments acquired National Semiconductor's analog product lines. Ensure the datasheet revision aligns with the specific lot code and manufacturing date for compliance verification.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust through-hole solution is necessary for high-current DC-DC conversion. The fixed 3.3 V output makes it suitable for standard logic levels without external feedback adjustments. Consider the thermal performance of the TO-220 package for heat dissipation needs in enclosed environments compared to surface-mount alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2599 family of SIMPLE SWITCHER regulators, which are widely recognized for their ease of use and reliability in power management designs. The 'T' suffix specifically denotes the through-hole TO-220 package, distinguishing it from the 'S' series variants intended for surface mount applications like TO-263 or D2PAK packages.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2599T-3.3/NOPB