LM2738XSD

Voltage Regulators - DC DC Switching Regulators Overview

The LM2738XSD/NOPB is a Texas Instruments step-down DC-DC switching regulator featuring a Buck topology in an 8-pin WSON package. It supports an input voltage range of 3 V to 20 V and delivers up to 1.5 A output current with adjustable output voltages from 800 mV to 18 V. The device operates at a fixed switching frequency of 1.6 MHz, maintaining a quiescent current of 1.9 mA. It functions reliably within an extended temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel MOSFET switch for efficient power conversion
• Fixed 1.6 MHz switching frequency enables the use of compact external components
• Shutdown pin functionality allows for effective power management and low standby consumption

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Industrial systems utilizing single-cell lithium-ion or lithium-polymer batteries
• Embedded applications needing stable power from 3 V to 20 V input sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as /NOPB against official manufacturer documentation to ensure correct specifications. Confirm package type and operating temperature range requirements prior to procurement. Note that availability status may vary by region and distributor.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for stepping down higher voltages to lower levels with moderate current demands. Ensure the application benefits from the 1.6 MHz frequency to minimize passive component size. Verify that the input voltage does not exceed the maximum rating and that thermal dissipation fits the WSON-8 footprint constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2738 series of switching regulators designed for space-constrained applications. It integrates the control logic and power switch into a small form factor, distinguishing it from larger packages like SOIC or DPAK. The series focuses on providing high efficiency in minimal board area for portable electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM2738 variants with different suffixes (e.g., XMYE) if alternative packaging such as eMSOP is preferred. Verify functional compatibility with other Buck converters in the same family before substitution.