MP2119DQ-LF-P

Voltage Regulators - DC DC Switching Regulators Overview

The MP2119DQ-LF-P is a synchronous step-down switching regulator manufactured by Monolithic Power Systems. It operates with an input voltage range of 2.7V to 5.5V and delivers an adjustable output voltage up to 2A. The device integrates a fixed 1.5MHz PWM frequency for compact external component sizing. It features internal compensation, enabling minimal external part count. The unit is housed in a 10-VFDFN exposed pad package suitable for surface mount applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel MOSFETs for efficient synchronous rectification
• Utilizes internally compensated architecture to reduce external component requirements
• Supports fixed 1.5MHz switching frequency operation for optimized inductor size
• Includes protection mechanisms against over-current and thermal overload

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics requiring efficient power management
• Battery-powered devices needing regulated voltage conversion
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
• General-purpose DC-DC conversion in consumer hardware

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'P' indicates tape and reel packaging configuration distinct from other variants. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the 10-VFDFN thermal pad requirements for adequate heat dissipation during high-load operations.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for 5.5V input systems. The 2A current capability suits moderate load applications. Consider the 1.5MHz frequency trade-off between efficiency and passive component size. Verify that the internal compensation meets loop stability requirements for the specific output capacitance used.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MPS MP2119 series of synchronous buck regulators. It shares architectural similarities with other members like the MP2116 but differs in current rating and package options. The DQ designation typically refers to the QFN package type, while LF indicates lead-free manufacturing processes compliant with environmental standards.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include MP2119DQ-LF-Z which offers identical electrical performance but utilizes reel packaging instead of tape and reel. Designers must verify pinout compatibility and thermal characteristics when transitioning between packaging variants within the same functional family.