LM2734ZMK/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2734ZMK/NOPB is a synchronous step-down DC-DC converter 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 continuous output current of 1 A and utilizes a fixed switching frequency of 1.6 MHz. It is housed in a SOT-23-THIN-6 package and functions within a junction temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel power MOSFETs for efficient synchronous rectification
• Features a fixed 1.6 MHz switching frequency to minimize external component size
• Includes internal soft-start circuitry to limit inrush current during startup
• Provides thermal shutdown protection to safeguard the device under overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring compact power solutions
• Battery-powered systems with wide input voltage ranges
• Industrial control modules needing regulated low-voltage supplies
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix ZMK against official Texas Instruments documentation to confirm the exact package type and tape-and-reel configuration. Ensure compatibility with your PCB footprint, as the SOT-23-THIN-6 package has distinct dimensional requirements compared to standard variants. Cross-reference the datasheet revision date to guarantee alignment with current manufacturing specifications and environmental compliance standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a small form factor is critical due to its thin SOT-23-6 packaging. It is suitable for applications requiring a fixed 1.6 MHz frequency to reduce inductor size. Consider this part if the design demands an input voltage up to 20 V and an output current capability of 1 A. Evaluate thermal performance constraints, as the small package may require careful PCB layout for adequate heat dissipation at higher loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2734 family of synchronous buck converters designed for space-constrained applications. The family offers various package options including WSON and MSOP to suit different board area requirements. The LM2734 series is characterized by high efficiency and integrated power switches, making it a common choice for portable devices where battery life and physical size are primary design drivers.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the LM2734 family cross-reference guide for pin-compatible alternatives such as the LM2734XMK or LM2734YMK. Verify that substitute parts maintain the same 1.6 MHz switching frequency and 1 A current rating to ensure circuit stability without redesigning the passive components.