LM2734ZQMK/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2734ZQMK/NOPB is a synchronous step-down DC-DC regulator manufactured by Texas Instruments, which acquired National Semiconductor. It operates with an input voltage range of 3 V to 20 V and provides an adjustable output voltage from 800 mV to 18 V. The device supports a continuous output current of 1 A and features a fixed switching frequency of 3 MHz. It is housed in a compact 6-pin SOT-23-THIN package and is qualified for automotive applications under the AEC-Q100 standard. The operational junction temperature range extends from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency without external Schottky diodes
• Automotive qualification compliant with AEC-Q100 standards for reliability
• Fixed 3 MHz switching frequency enables the use of small passive components
• Compact 6-pin thin SOT-23 package optimizes board space utilization

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring regulated power rails
• On-board navigation and telematics control units
• Industrial sensor nodes operating within wide input voltage ranges
• Portable electronic devices utilizing single-cell lithium-ion battery sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin, as Texas Instruments now produces this component following its acquisition of National Semiconductor. Confirm the specific suffix indicates the correct package type and automotive grade. Ensure compatibility with RoHS directives if required by your manufacturing process. Check for moisture sensitivity levels before assembly to prevent damage during reflow soldering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact footprint is critical for automotive or industrial designs. The 3 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the load current requirements do not exceed the 1 A limit. Consider thermal performance in enclosed spaces due to the small package size.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2734 family of synchronous buck converters designed for space-constrained applications. The Z suffix typically denotes automotive-grade qualification. The NOPB suffix indicates a lead-free and halogen-free compliant version. This series is widely used in modern electronics where efficiency and size are primary design constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2734XQMK/NOPB: Features a 1.6 MHz switching frequency instead of 3 MHz, allowing for different passive component selection while maintaining similar electrical characteristics and package.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM2734ZQMK/NOPB a synchronous converter?

Yes, it integrates both high-side and low-side MOSFETs, eliminating the need for an external catch diode.

What is the maximum input voltage for this device?

The device supports an input voltage range up to 20 V.