LM2734ZQMK/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2734ZQMK/NOPB is a synchronous step-down DC-DC voltage regulator manufactured by Texas Instruments. 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 maximum output current of 1 A and integrates a fixed switching frequency of 3 MHz. It is housed in a compact 6-pin WSON package measuring 3 mm x 3 mm. The component is qualified for automotive applications under the AEC-Q100 standard and functions reliably within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Fixed 3 MHz switching frequency enables compact external component sizing
• Automotive-grade qualification ensures reliability in harsh environments

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Telematics control units
• Body electronics modules
• Industrial sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct package type and automotive qualification status. Confirm RoHS compliance details as specified in the latest datasheet. Cross-reference ordering information directly with authorized distributors to avoid counterfeit components. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, high-frequency synchronous buck converter is required for automotive or industrial applications. The 3 MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Verify that the load current does not exceed 1 A and that the input voltage remains within the 3 V to 20 V operational window. Consider thermal performance in the final PCB layout due to the small package size.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2734 family of high-frequency step-down regulators from Texas Instruments. The family includes variants with different packages such as WSON and SOT-23-THIN, and options with or without automotive qualification. The ZQMK suffix specifically denotes the WSON-6 package with automotive grade qualification, distinguishing it from commercial grade or alternative package versions within the same functional series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2734ZSD/NOPB: Commercial grade equivalent in WSON-6 package. LM2734ZQMKE/NOPB: Automotive grade equivalent in SOT-23-THIN-6 package.