LM2738YSD

Voltage Regulators - DC DC Switching Regulators Overview

The LM2738YSD is a synchronous step-down DC-DC converter manufactured by Texas Instruments, formerly National Semiconductor. It operates with a fixed switching frequency of 1.6 MHz and delivers an output current of 1.5 A. The device accepts an input voltage range from 3 V to 20 V and provides an adjustable output voltage between 800 mV and 18 V. It features a low quiescent current of 1.9 mA and includes shutdown functionality. The component is housed in an 8-pin WSON package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for high efficiency
• Integrated 1.6 MHz switching frequency
• Adjustable output voltage capability
• Shutdown pin for power management

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Battery-powered devices
• Embedded systems power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'YSD' corresponds to the WSON-8 package and 1.6 MHz frequency variant. Ensure RoHS compliance documentation is available if required for your assembly process. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for converting higher battery voltages to lower logic levels. The 1.6 MHz frequency allows for smaller external inductors and capacitors compared to lower frequency alternatives. The 1.5 A output current rating suits moderate load applications. Consider the thermal performance in the WSON package for your specific PCB layout constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2738 family of synchronous step-down converters. The family offers flexibility in switching frequencies and output currents. The LM2738 series is designed for space-constrained applications requiring efficient power conversion from single-cell lithium-ion batteries or other power sources.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible replacements within the LM2738 family, such as variants with different switching frequencies or output current ratings. Verify that any substitute maintains the same WSON-8 package dimensions and electrical characteristics.