MP8903DG-3.3-LF-P

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The MP8903DG-3.3-LF-P is a fixed positive low-dropout linear regulator manufactured by Monolithic Power Systems. It provides a fixed 3.3V output with a maximum continuous current of 150mA. The device operates from an input voltage range of 2.7V to 6.5V and features a typical dropout voltage of 100mV at 100mA load. Output accuracy is specified at 2%. Key protection mechanisms include thermal shutdown. The component is housed in an 8-QFN (2x2mm) surface-mount package and supports operation within a temperature range of -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Fixed 3.3V output voltage option within the MP8903 series
• Integrated thermal protection for harsh operating conditions
• Compact 8-QFN package design for space-constrained applications

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable battery-powered electronic devices
• General regulation circuits requiring stable 3.3V supply
• Voltage reference functions in mixed-signal systems

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify component status as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors, noting potential minimum order quantity restrictions due to end-of-life planning. Ensure RoHS compliance matches project requirements. Validate that the 8-QFN footprint aligns with existing PCB layouts before finalizing procurement decisions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this part when a fixed 3.3V rail is required with moderate current demands up to 150mA. Consider the 2.7V to 6.5V input window against system power sources. Evaluate thermal performance given the small QFN package size. Compare against adjustable variants if voltage flexibility is needed later in the design cycle.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the MP8903 family of low-dropout regulators from Monolithic Power Systems. The series offers various fixed output voltages including 2.5V, 2.85V, and 3.3V, alongside adjustable options. The MP8903DG-3.3-LF-P specifically denotes the 3.3V fixed version in lead-free packaging.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult manufacturer obsolescence notices or engineering change orders for approved alternatives.