MPQ8903DJ-3.3-LF-P

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

The MPQ8903DJ-3.3-LF-P is a low-dropout linear regulator manufactured by Monolithic Power Systems. It provides a fixed positive output voltage of 3.3 V with a maximum output current of 150 mA. The device operates within an input voltage range of 2.7 V to 6.5 V and features a typical dropout voltage of 100 mV at full load. It offers high power supply rejection ratio performance, typically 50 dB, ensuring stable regulation under varying line conditions. The component is housed in a compact SOT-23-5 surface-mount package and is rated for operation across an extended temperature range from -40°C to +85°C.

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

• Provides a fixed 3.3 V output voltage with 150 mA continuous current capability
• Operates efficiently over a wide input voltage range from 2.7 V to 6.5 V
• Features low dropout voltage characteristics for improved efficiency near the input limit
• Includes thermal protection mechanisms to safeguard against harsh operating conditions

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

• Portable battery-powered electronic devices requiring stable 3.3 V logic levels
• Embedded systems utilizing microcontrollers or sensors powered by single-cell lithium batteries
• Communication modules needing regulated power from variable input sources

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

Verify the specific suffix 'P' against official manufacturer documentation, as standard listings often utilize 'Z'. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the SOT-23-5 package variant matches your PCB footprint requirements before finalizing procurement orders.

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

Select this component when a fixed 3.3 V rail is required with minimal external circuitry. It is suitable for applications where input voltage remains above 2.7 V. Consider the SOT-23-5 package size constraints and thermal dissipation capabilities relative to the expected load current and ambient temperature conditions.

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

This part belongs to the MPQ8903 series of low-dropout regulators designed for portable electronics. The series includes variants with different output voltages and packages, such as QFN-8. The MPQ8903DJ-3.3-LF-P specifically targets cost-sensitive applications requiring reliable linear regulation in a small form factor.

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

Direct substitutes include MP8903DG-3.3-LF-P (QFN-8 package) and MPQ8903DJ-3.3-LF-Z (SOT-23-5 package). Verify pin compatibility and thermal performance when swapping between package types.