LM22670QMR-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM22670QMR-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator designed for automotive applications, holding AEC-Q100 qualification. It operates with an input voltage range of 4.5V to 42V and provides a fixed 5V output at up to 3A load current. The device integrates a 0.55Ω power switch and supports switching frequencies of 500kHz or 1MHz. Key features include frequency synchronization, adjustable soft-start, and thermal shutdown. It is housed in an 8-pin SO PowerPAD package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel MOSFET capable of delivering 3A continuous output current
• Frequency synchronization capability allows multiple regulators to operate in phase alignment
• Built-in thermal protection circuitry shuts down the device when junction temperature exceeds safe limits

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive point-of-load regulation
• Distributed power systems
• Battery-powered equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'QMR' indicates the automotive grade and SOIC-8 PowerPAD package configuration. Confirm the '-5.0' designation matches the required fixed 5V output voltage. Ensure the 'NOPB' suffix confirms lead-free and RoHS compliance status as per the manufacturer's latest documentation before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, automotive-grade buck converter is required for high-current applications. The fixed 5V output simplifies design compared to adjustable variants. Consider the 3A current rating and 42V input tolerance against system requirements. Evaluate the need for frequency synchronization if multiple converters are present in the design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2267x family of SIMPLE SWITCHER regulators from Texas Instruments. It shares architectural similarities with the LM2670 but offers improved efficiency and higher switching frequency options. The Q-series designation specifically denotes automotive reliability standards, distinguishing it from commercial grade counterparts within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM22670MR-5.0/NOPB (Commercial Grade)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM22670QMR-5.0/NOPB?

The maximum input voltage is 42V.

Does this device support external clock synchronization?

Yes, the SYNC pin allows the switching frequency to be synchronized to an external clock signal.