LM22677QTJ-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22677QTJ-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER® step-down DC/DC switching regulator designed for high-efficiency power conversion. It integrates a 5A current switch and operates with an input voltage range of 4.5V to 42V, delivering a fixed 5V output. The device supports a switching frequency up to 1MHz and features frequency synchronization capabilities. Packaged in a TO-263-7 (DPAK) surface-mount format, it is qualified under AEC-Q100 standards for automotive applications, ensuring reliability within an operating temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 5A internal power switch for compact solution design
• Supports external clock synchronization to reduce system noise
• Includes comprehensive protection mechanisms such as over-current protection

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring robust power regulation
• Industrial control boards utilizing 12V or 24V bus architectures
• Point-of-load conversion for embedded computing modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'QTJ' confirms automotive qualification (AEC-Q100) and the '-5.0' indicates the fixed 5V output variant. Ensure compatibility with TO-263-7 footprint requirements during PCB layout. Confirm that the selected distributor provides genuine TI components with traceable lot codes to maintain supply chain integrity for regulated environments.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from a wide input voltage range up to 42V. It is suitable for designs needing high current capability without external pass transistors. Consider the TO-263-7 package for thermal management needs. Verify that the application environment meets the -40°C to +125°C operating temperature specifications and requires automotive-grade reliability standards.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2267x family of SIMPLE SWITCHER regulators, which are known for integrating power switches and control circuitry into a single IC. The LM22677 specifically targets higher current applications compared to lower-rated siblings like the LM22670 or LM22676. The 'Q' prefix denotes automotive qualification, while 'TJ' specifies the tape-and-reel packaging in the TO-263-7 case.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM22677 variants with different output voltages or packages, such as LM22677TJ-ADJ/NOPB for adjustable output. Cross-family replacements may involve LM5167 or LM2678 series devices, though pinouts and thermal characteristics must be verified against the original design constraints.