LM2653MTC-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2653MTC-ADJ is a synchronous step-down switching regulator manufactured by Texas Instruments, formerly National Semiconductor. It operates with an input voltage range of 4V to 14V and provides an adjustable output voltage from 1.5V to 5V. The device delivers a maximum output current of 1.5A at a fixed switching frequency of 300kHz (with some sources citing 330kHz). It features a TSSOP-16 surface-mount package and supports an operating junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification for high efficiency
• Adjustable output voltage capability
• Integrated power switch design

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment power management
• Industrial control system power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as the component was originally produced by National Semiconductor before its acquisition by Texas Instruments. Ensure the specific suffix matches your supply chain requirements, noting that NOPB variants indicate lead-free/RoHS compliance. Confirm the exact switching frequency specification in the final datasheet version, as documentation may vary between 300kHz and 330kHz depending on the revision.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, high-efficiency buck converter is required for moderate current loads up to 1.5A. The synchronous design reduces external component count compared to non-synchronous alternatives. Consider the thermal performance within the TSSOP-16 package for your specific PCB layout and ambient temperature conditions. Verify that the input voltage range aligns with your system's power source constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2653 family of high-efficiency synchronous switching regulators. The series is designed for applications requiring reliable DC-DC conversion in space-constrained environments. The ADJ suffix indicates an adjustable output voltage configuration, allowing flexibility in setting the output level via external resistors rather than using a fixed-voltage variant.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM2653MTC-ADJ/NOPB is a direct equivalent offering RoHS-compliant manufacturing. Check for updated Texas Instruments datasheets to ensure pinout and electrical characteristics remain identical to the original National Semiconductor specifications before substitution.