MP2116DQ-LF-P

Overview

The MP2116DQ-LF-P is a synchronous step-down converter and low-dropout regulator integrated into a single QFN-10 package. The buck converter supports an input voltage range of 1 V to 6 V, delivering up to 2 A output current with adjustable output from 600 mV to 6 V. It operates at a fixed switching frequency of 1.25 MHz. The integrated LDO provides up to 500 mA output current. The device functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-efficiency synchronous buck converter with a separate low-dropout linear regulator in a compact footprint.
• Features a wide input voltage range suitable for various power supply architectures.
• Includes built-in protection mechanisms such as over-current protection and thermal shutdown.

Applications

• Portable consumer electronics requiring multiple voltage rails
• Embedded systems with space-constrained power designs
• Battery-powered devices needing efficient DC-DC conversion

Procurement Notes

Verify the specific suffix (LF-P) against official Monolithic Power Systems documentation to confirm lead-free status and tape-and-reel packaging specifications. Ensure compatibility with standard surface-mount assembly processes. Cross-reference the component marking code with manufacturer datasheets to authenticate the part before integration into production lines.

Selection Notes

Select this component when a design requires both a high-current switching regulator and a low-noise linear regulator within a limited board area. The 1.25 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 2 A buck limit and 500 mA LDO limit to ensure adequate headroom for the target application loads.

Part Context

This part belongs to the MP2116 series of dual-output power management ICs from Monolithic Power Systems. It combines a synchronous buck topology with an LDO to simplify power distribution networks. The QFN-10 package offers thermal performance advantages for dense PCB layouts.

Replacement Considerations

MP2116DQ-LF-Z is a verified substitute within the same series offering identical electrical characteristics but potentially different packaging quantities or reel specifications.