LM22670QTJ-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22670QTJE-ADJ/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, operating in a buck topology. It delivers an adjustable output voltage with a maximum continuous output current of 3 A. The device supports an input voltage range from 4.5 V to 40 V and operates at a fixed switching frequency of 500 kHz. It is housed in a TO-263-7 package (TO-263-7 PowerPAD) for surface-mount installation. The component is qualified under AEC-Q100 standards and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel MOSFET enables compact design without external power switches.
• Fixed 500 kHz switching frequency allows the use of small inductors and capacitors.
• AEC-Q100 qualification ensures reliability for automotive applications.
• Internal compensation simplifies external component selection and layout.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Distributed power architectures
• Point-of-load regulation modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix against official datasheets, as variations like QTJE may indicate specific tape-and-reel packaging or regional variants. Confirm RoHS compliance status directly with the manufacturer documentation. Ensure the TO-263-7 PowerPAD thermal pad is properly connected to the PCB ground plane for adequate heat dissipation during operation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 3 A buck converter is required for automotive-grade environments. The 500 kHz frequency balances efficiency and component size. Compare against the LM22670 fixed-voltage versions if a specific output is needed. Ensure the input voltage does not exceed 40 V and that the thermal design accommodates the TO-263-7 package limitations.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2267x family of SIMPLE SWITCHER regulators, which includes variants like the LM22671, LM22674, and LM22677. These devices share similar control architectures but differ in output current capabilities and package options. The LM22670 specifically targets higher current applications compared to the 500 mA LM22671/4 series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22670QX-ADJ/NOPB offers the same electrical specifications in a smaller D2PAK-7 package. LM22670INVEVAL/NOPB is an evaluation board for the inverting topology, not a direct pin-to-pin replacement. Verify thermal performance differences when substituting packages.