LM2647MTC/NOPB

DC DC Switching Controllers Overview

The LM2647MTC/NOPB is a dual-channel synchronous buck controller manufactured by Texas Instruments. It operates within an input voltage range of 5.5 V to 28 V and supports adjustable output voltages from 600 mV to 5 V. The device delivers up to 20 A per channel with a switching frequency adjustable between 200 kHz and 500 kHz. It features a maximum duty cycle of 75% and draws 2.5 mA in quiescent current. The component functions reliably across a temperature range of -5°C to +125°C and is housed in a TSSOP-28 package.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture for independent or interleaved power delivery
• Voltage-mode control for stable regulation under varying loads
• Integrated high-side and low-side gate drivers for external MOSFETs
• Supports wide input voltage ranges suitable for industrial applications

DC DC Switching Controllers Applications

• Industrial point-of-load regulation
• Telecommunications power systems
• Distributed power architectures

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and thermal characteristics. Ensure the ordering part number matches the required package variant, as suffixes may indicate differences in tape-and-reel specifications or environmental ratings. Cross-reference the manufacturer's latest datasheet to validate active status and compliance certifications before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring two isolated or non-isolated synchronous buck outputs from a single intermediate bus voltage. Consider the 20 A current capability and the 200 kHz to 500 kHz frequency range for optimizing inductor size and transient response. Evaluate the TSSOP-28 package for thermal management requirements relative to the expected load profile and ambient conditions.

DC DC Switching Controllers Part Context

This component belongs to the LM2647 family of dual-channel synchronous buck controllers designed for high-efficiency power conversion. It complements other Texas Instruments power management solutions by providing a compact, integrated control solution for multi-rail systems. The device is engineered to reduce board space and simplify design compared to discrete controller implementations.

DC DC Switching Controllers Replacement Considerations

Consult the official replacement matrix for direct substitutes. Verify compatibility regarding pin assignments, control loop stability, and thermal performance if substituting with similar dual-channel controllers.