LM34914SDX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM34914SDX/NOPB is an ultra-small, synchronous step-down switching regulator manufactured by Texas Instruments. It integrates a high-side and low-side N-channel MOSFETs to deliver up to 1.25A of output current. The device operates with an input voltage range from 8V to 40V and features a fixed switching frequency of 1.3MHz. It supports adjustable output voltages down to 0.8V. The component functions reliably within an operating temperature range of -40°C to +125°C junction temperature. It is housed in a compact 10-WSON package designed for space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel power switches for efficient buck conversion
• Features intelligent current limiting to protect against short circuits and overloads
• Supports analog dimming control for LED backlighting applications
• Includes internal soft-start to limit inrush current during startup

Voltage Regulators - DC DC Switching Regulators Applications

• LCD panel backlight drivers
• Portable electronics power management
• Industrial control systems
• Automotive infotainment subsystems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact ordering suffix matches the required tape and reel quantity specifications. Confirm that the WSON-10 package footprint aligns with the target PCB layout constraints. Ensure the thermal pad connection is properly implemented to maintain the specified junction temperature limits under full load conditions. Cross-reference the datasheet revision to confirm compatibility with existing design parameters.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for stepping down 12V or 24V rails to lower voltage levels. The integrated synchronous rectification improves efficiency compared to asynchronous designs. Consider the 1.3MHz frequency for smaller external passive components. Evaluate the thermal performance requirements relative to the ambient environment and board copper area available for heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM349xx series of ultra-small step-down regulators from Texas Instruments. It shares architectural similarities with other members like the LM34914SD/NOPB but differs in packaging configuration. The series targets applications requiring high efficiency in minimal board space. It complements other PMIC offerings by providing a dedicated buck converter solution without external gate drive requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM34914SD/NOPB is a documented variant with identical electrical characteristics but potentially different packaging or reel specifications.