LM2640MTCX-ADJ

Power Supply Controllers, Monitors Overview

The LM2640MTCX-ADJ/NOPB is a dual adjustable step-down switching power supply controller designed for notebook and battery-powered personal computer applications. It operates with an input voltage range of 5.5 V to 30 V and features a fixed-frequency switching capability at 200 kHz, which can be synchronized with an external signal up to 400 kHz. The device supports optional pulse-skipping mode for improved light-load efficiency. It is housed in a 28-TSSOP package and functions within an operating temperature range of 0°C to 125°C.

Power Supply Controllers, Monitors Feature Summary

• Dual synchronous buck controller architecture
• Switching frequency synchronization with external clock
• Optional pulse-skipping mode for efficiency optimization

Power Supply Controllers, Monitors Applications

• Notebook computers
• Battery-powered personal computers
• Dual rail power supply systems

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix NOPB against the required RoHS compliance standards. Confirm the package type matches the 28-TSSOP footprint requirements. Check current manufacturing status as availability may vary. Ensure the design supports the 5.5 V to 30 V input range constraints.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing dual-output DC-DC converters for portable computing devices. It is suitable for applications requiring synchronized switching frequencies to reduce electromagnetic interference. Consider the thermal performance within the specified temperature range during layout planning.

Power Supply Controllers, Monitors Part Context

This part belongs to the Texas Instruments family of power supply controllers. It is specifically engineered for high-efficiency power management in mobile electronics. The device integrates control logic for dual synchronous rectification, distinguishing it from single-channel regulators.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing gate drivers and passive components if cross-referencing with other dual buck controllers.