LM21305SQX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM21305SQX/NOPB is a synchronous step-down DC/DC converter manufactured by Texas Instruments. It operates with an input voltage range of 3 V to 18 V and delivers up to 5 A of output current. The adjustable output voltage spans from 600 mV to 5 V. The device supports switching frequencies between 300 kHz and 1.5 MHz, which can be synchronized to an external clock. It is housed in a WQFN-28 package and functions within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck topology for high efficiency
• Adjustable switching frequency with external synchronization capability
• Wide input voltage range supporting various power sources

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Embedded system power distribution
• Communication equipment bias supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SQX' against the manufacturer datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating temperatures and input voltage ranges before integration. Cross-reference the ordering part number with official TI documentation to avoid substitution errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range and adjustable frequency are required. The 5 A current rating suits moderate power applications. Verify that the WQFN-28 package fits the PCB layout constraints. Consider thermal management requirements given the surface-mount packaging and power dissipation characteristics.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM21305 family of synchronous buck regulators. It is designed for applications requiring flexible frequency adjustment and synchronization. The device integrates power switches and control logic into a compact form factor suitable for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the same product family. Verify electrical parameter equivalence for input/output voltages and current ratings. Confirm package dimensions match existing footprints.