LM78S40N/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM78S40N/NOPB is a current-mode switching regulator manufactured by Texas Instruments. It features a bipolar construction and operates with a maximum switching frequency of 100 kHz. The device provides a regulated output current of 1.5 A. It is housed in a PDIP-16 package, designated as N suffix. This component functions as a standalone switching regulator suitable for power supply applications requiring moderate current delivery.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Current-mode control architecture for efficient regulation
• Integrated 1.5 A output current capability
• Fixed 100 kHz maximum switching frequency operation

Voltage Regulators - DC DC Switching Regulators Applications

• General purpose DC-DC conversion circuits
• Power supplies for industrial equipment
• Embedded system voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific ordering prefix and suffix to ensure compatibility with required packaging and temperature ranges. Confirm that the PDIP-16 through-hole package aligns with the target PCB layout. Check for any recent product level changes or obsolescence notices from Texas Instruments before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed-frequency current-mode solution is required with up to 1.5 A output. Consider the thermal performance associated with the PDIP-16 package under full load conditions. Ensure input voltage specifications exceed the minimum requirements for stable regulation within the intended operating environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM78S series of switching regulators from Texas Instruments. It represents a legacy bipolar technology solution compared to modern CMOS alternatives. The NOPB suffix indicates lead-free and RoHS compliance. It serves as a direct replacement for earlier non-compliant versions within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-to-pin replacements may include other LM78S40 variants with different suffixes for package or temperature variations. Verify electrical equivalence if substituting with generic equivalents. No specific cross-referenced substitute part numbers are documented in official public data.