LM2595S-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2595S-3.3 is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a 150 kHz step-down voltage regulator. It provides a fixed 3.3 V output with a maximum current of 1 A. The device accepts an input voltage range of 4.5 V to 40 V and operates within a junction temperature range of -40 °C to +125 °C. Packaged in TO-263 (TO-263-5), it utilizes a buck topology without synchronous rectification. Key electrical parameters include a switching frequency of 150 kHz and a typical quiescent current of 85 µA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switch for simplified design
• Fixed internal feedback network for stable regulation
• Built-in thermal shutdown protection
• Current limit protection for overload safety

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient pre-regulator for linear regulators
• Point-of-load DC/DC conversion
• Battery-powered systems requiring step-down regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully, as UMW may distribute or rebrand components originally manufactured by Texas Instruments. Confirm that the part number suffix matches the specific package type and regulatory compliance status required for your assembly. Ensure datasheet specifications align with your system's thermal and electrical constraints before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required at up to 1 A with minimal external circuitry. It is suitable for designs prioritizing simplicity over high efficiency compared to synchronous alternatives. Consider the TO-263 package for adequate heat dissipation in moderate load applications without additional heatsinking requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2595 family of SIMPLE SWITCHER converters, which are designed for easy implementation of buck topologies. Unlike the higher-current LM2596 series, the LM2595 is optimized for lower power applications around 1 A. The 'S' suffix denotes the surface-mount TO-263 package variant.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct functional substitutes include the LM2595SX-3.3/NOPB and LM2595T-3.3. Verify pinout compatibility and thermal performance characteristics when transitioning between different package styles or manufacturers.