LM2596T-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2596T-12/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 150 kHz. It provides a nominal output voltage of 12 V with a maximum output current capability of 3 A. The device accepts an input voltage range from 4.5 V to 40 V and features a shutdown function with a typical quiescent current of 5 mA. Designed for through-hole mounting in a TO-220-5 package, it operates reliably within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology simplifies design by combining the controller, switch, and protection circuits on a single chip.
• Fixed internal oscillator ensures stable operation without external timing components, maintaining consistent performance across varying load conditions.
• Built-in thermal shutdown and current limiting protect the device against overheating and short-circuit events during fault conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures requiring efficient step-down conversion from higher bus voltages
• Pre-regulator stages for linear post-regulators to improve overall system efficiency
• Battery-powered systems utilizing high-efficiency DC-DC conversion for extended operational life

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the suffix /NOPB to confirm lead-free compliance and RoHS adherence. Ensure the ordering code matches the specific through-hole TO-220-5 package variant. Cross-reference manufacturer datasheets for any recent pinout or electrical specification updates before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from an input source between 4.5 V and 40 V. The 3 A current rating suits moderate power applications where thermal management via the TO-220 package is feasible. Consider alternative packages like TO-263 if surface mount assembly is preferred for the same electrical performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2596 family of SIMPLE SWITCHER regulators, which are widely used for their simplicity and robustness. The 'T' designation indicates the through-hole TO-220 package, while '/NOPB' signifies non-lead-based packaging compliant with environmental standards. It serves as a direct replacement for older leaded versions in existing designs requiring regulatory compliance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct functional equivalents include the LM2596T-12 (older leaded version) and LM2596S-12/NOPB for surface mount applications. Verify that substitute parts maintain the same 150 kHz switching frequency and 3 A current capacity to ensure compatibility with existing passive component selections.