LM2595SX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2595SX-3.3/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator operating at a fixed switching frequency of 150 kHz. It accepts an input voltage range from 4.5 V to 40 V and provides a fixed output voltage of 3.3 V with a maximum output current of 1 A. The device utilizes a TO-263 (D2PAK) surface-mount package with five leads plus a tab. It features internal thermal shutdown and current limiting, supporting operation across a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology for efficient DC-DC step-down conversion
• Fixed 150 kHz internal oscillator eliminates external timing component requirements
• Built-in thermal shutdown protection prevents damage during overtemperature conditions
• Internal current limit restricts peak switch current to protect against short circuits

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital logic circuits
• Pre-regulator stages for switching regulators
• Efficient battery-powered systems requiring high efficiency
• General-purpose power supply topologies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as defined by Texas Instruments. Ensure the ordering part number matches the required TO-263 package variant. Confirm that the fixed 3.3 V output specification aligns with the target circuit design requirements before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from an input voltage up to 40 V. The 1 A current capability suits moderate load applications. Consider the TO-263 package for its thermal dissipation advantages compared to smaller packages. Verify that the 150 kHz switching frequency fits within the electromagnetic interference constraints of the system.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2595 series of SIMPLE SWITCHER regulators, which are designed for ease of use in standard buck converter configurations. The series offers a balance of performance and simplicity, utilizing minimal external components. The LM2595SX variant specifically denotes the surface-mount D2PAK package option within the broader family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2595SX-3.3/NOPB is the direct equivalent part number. Cross-reference with other LM2595 variants if different output voltages or package types are acceptable.