LM34919CQTL/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM34919CQTL/NOPB is an ultra-small, wide input voltage, 600 mA buck converter from Texas Instruments. It operates with an input voltage range of 4.5 V to 50 V and provides an adjustable output voltage from 2.5 V to 45 V. The device features a fixed switching frequency of 2.6 MHz and draws a typical quiescent current of 2.2 mA. It is housed in a DSBGA-12 package and is qualified to AEC-Q100 standards for automotive applications. The operational temperature range spans from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Constant On-Time (COT) control architecture for fast transient response
• Wide input voltage capability supporting 4.5 V to 50 V sources
• Automotive qualification compliant with AEC-Q100 standards
• Ultra-small footprint utilizing DSBGA-12 packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Telematics control units
• Body electronics modules
• Industrial point-of-load regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'CQTL' against the manufacturer's official datasheet to confirm pinout and thermal pad configuration. Ensure the component meets AEC-Q100 grade requirements if used in automotive environments. Cross-reference the revision history for any recent package or material changes that may impact PCB layout or soldering profiles.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for high-voltage inputs up to 50 V. The 2.6 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 600 mA output limit and ensure the thermal performance of the DSBGA-12 package suits the application's power dissipation needs without excessive heatsinking.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM34919C family of constant on-time buck converters designed for space-constrained applications. It shares architectural similarities with other TI wide-input regulators but is distinct in its specific 600 mA current rating and 2.6 MHz fixed frequency operation. The 'C' designation typically indicates automotive-grade qualification within the product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM34919CQSDX/NOPB and LM34919TL/NOPB. Verify package compatibility, as QSDX uses WSON and TL uses DSBGA-10. Input voltage ranges and output current capabilities must be confirmed against the new part's datasheet to ensure functional equivalence.