LM2596SX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2596SX-3.3 is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a fixed-output step-down voltage regulator. It provides a nominal 3.3V output with a maximum load current of 3A. The device operates within an input voltage range of 4.5V to 40V and utilizes a fixed switching frequency of 150kHz. It features internal frequency compensation and thermal shutdown protection. The component is housed in a surface-mount TO-263 (D²PAK) package and supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated SIMPLE SWITCHER technology simplifies design by requiring minimal external components for buck conversion.
• Fixed 150kHz switching frequency allows for the use of smaller filter components compared to lower-frequency regulators.
• Built-in thermal shutdown and current limiting protect against fault conditions and overload scenarios.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power systems
• Pre-regulator circuits for downstream linear regulators
• Efficient DC-DC conversion for battery-powered equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm RoHS compliance status through official datasheets or manufacturer declarations. Ensure the supplier provides traceable documentation matching the specific part number variant to avoid counterfeit risks.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a stable 3.3V rail is required at up to 3A loads. Consider the 150kHz frequency for balancing efficiency and passive size. Evaluate thermal requirements based on the TO-263 package's heat dissipation capabilities under expected ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2596 series of monolithic integrated step-down converters. It shares core architecture with other variants offering different fixed voltages or adjustable outputs. The series is designed for high-efficiency power management in industrial and consumer applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596S-3.3/NOPB: Identical function with TO-220 through-hole package. LM2596SX-3.3/NOPB: Direct pin-compatible surface mount replacement with NOPB suffix indicating lead-free/RoHS compliance.