MP2128DG-LF-P

Voltage Regulators - DC DC Switching Regulators Overview

The MP2128DG-LF-P is a synchronous step-down switching regulator manufactured by Monolithic Power Systems. It operates with an input voltage range of 2.5 V to 6 V and delivers up to 1 A of output current. The device supports adjustable output voltages from 600 mV to 6 V. It features a fixed switching frequency of 3 MHz, enabling the use of small external components. The IC includes integrated power switches and operates within a temperature range of -40°C to +125°C. It is housed in an 8-lead QFN package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel MOSFETs for efficient synchronous rectification.
• Utilizes constant-on-time (COT) control architecture for fast transient response.
• Includes comprehensive protection mechanisms such as over-current, over-voltage, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Industrial equipment power distribution
• Embedded systems voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix configuration against official datasheets, as variations may exist between tape-and-reel and cut-tape packaging formats. Confirm RoHS compliance status directly with the manufacturer or authorized distributors prior to procurement. Ensure that the specific lot codes meet your project's quality requirements. Cross-reference the ordering part number with the manufacturer's latest documentation to avoid discrepancies in pinout or electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for low-voltage, high-current applications. The 3 MHz switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the thermal performance in the QFN-8 package under maximum load conditions. Evaluate the input voltage range to ensure compatibility with the system's power source. Verify that the output voltage adjustment range meets the target rail requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the MPS MP2128 series of synchronous buck converters. It is designed for space-constrained applications requiring high efficiency and fast transient response. The series typically integrates power switches and control logic into a single compact package. It serves as a power management solution for various digital loads in portable and industrial devices.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

MPQ2128DG-LF-Z is a qualified equivalent offering automotive-grade reliability. MP2128DG-Z is a standard commercial grade alternative within the same product family. Both parts share identical pinouts and electrical specifications but differ in manufacturing qualification standards.