LM2734YQMKE/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2734YQMKE/NOPB is an automotive-grade synchronous step-down DC-DC converter manufactured by Texas Instruments. It operates with an input voltage range of 3 V to 20 V and delivers a maximum output current of 1 A. The device features a fixed switching frequency of 1.6 MHz, enabling the use of small external components. It supports adjustable output voltages from 800 mV to 18 V. The regulator includes integrated protection features such as cycle-by-cycle current limit, thermal shutdown, and soft-start. It is qualified to AEC-Q100 standards for automotive applications and operates within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Integrated synchronous rectification for high efficiency across load conditions
• Fixed 1.6 MHz switching frequency minimizes external passive component size
• Built-in thermal shutdown and cycle-by-cycle current limiting for robust operation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in automotive infotainment systems
• Power distribution units in automotive electronic control modules
• Battery-powered automotive sensor nodes requiring efficient step-down conversion

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 temperature grade. Confirm RoHS compliance status through the manufacturer's latest datasheet or environmental information files. Check for specific ordering prefixes if required by your supply chain protocols. Ensure storage conditions account for moisture sensitivity level ratings specified in the package outline drawings.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive applications requiring a compact, high-efficiency buck converter with a 1 A output capability. The fixed 1.6 MHz frequency is suitable for designs prioritizing small footprint over ultra-low noise. Compare input voltage ranges and output current limits against system requirements to ensure adequate headroom. Consider the HVSSOP-10 package constraints for thermal management and PCB layout space availability.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2734 family of synchronous step-down converters designed for automotive and industrial markets. It shares architectural similarities with other members like the LM2734Z and LM2734X series but differs in packaging and specific electrical characteristics. The family emphasizes high integration and automotive reliability, targeting applications where board space is limited and operational robustness is critical under varying thermal conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2734YMKX/NOPB and LM2734YMFX/NOPB, which share similar electrical specifications but differ in package types (SOT-23-THIN-6 vs HVSSOP-10). Verify pinout compatibility and thermal performance before substitution. Other family members like LM27342MYX/NOPB offer higher current capabilities but require different design considerations.