LM34914SD/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM34914SD/NOPB is an ultra-small step-down switching regulator manufactured by Texas Instruments, formerly National Semiconductor. It delivers a continuous output current of 1.25A with a fixed switching frequency of 1.3MHz. The device operates within a junction temperature range of -40°C to 125°C and utilizes a 10-WFDFN exposed pad surface-mount package. It integrates an N-channel buck switch but does not feature synchronous rectification.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an N-channel power switch for efficient buck conversion
• Features intelligent current limit protection
• Designed for low-cost, high-efficiency applications

Voltage Regulators - DC DC Switching Regulators Applications

• Low cost buck bias regulators
• Efficient step-down power supply implementations
• Space-constrained electronic designs requiring small form factor

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as the part was originally from National Semiconductor before its acquisition by Texas Instruments. Confirm the suffix NOPB indicates lead-free and RoHS compliance. Ensure the 10-WFDFN package matches your PCB footprint requirements. Cross-reference the specific revision level if available in official documentation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for currents up to 1.25A without needing synchronous rectification. The 1.3MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the thermal performance of the exposed pad package for heat dissipation needs within the specified operating temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the family of ultra-small step-down switching regulators. It serves as a bridge between legacy National Semiconductor products and the current Texas Instruments portfolio. The SD/NOPB designation specifies the specific package type and environmental compliance status within the broader LM34914 series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible equivalents within the LM34914 series. Verify that any substitute maintains the 1.25A output capability and 1.3MHz switching frequency. Ensure the replacement supports the same 10-WFDFN package or requires mechanical adaptation.