MIC5239BM

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

The MIC5239BM is a low quiescent current, µCap low-dropout linear regulator manufactured by Microchip Technology. It provides a fixed positive output voltage of 3.3V with a maximum continuous output current capability of 500mA. The device supports a maximum operating input voltage of 30V and features a typical dropout voltage of 0.35V at full load. It operates within an extended temperature range of -40°C to +125°C. The IC is housed in an 8-MSOP surface-mount package and includes logic-compatible enable functionality.

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

• Ultra-low quiescent current consumption suitable for battery-powered applications
• Stable with small ceramic or tantalum output capacitors requiring only 3.3µF
• Integrated protection against over-current, thermal overload, and reverse polarity

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

• Keep-alive power supply for high-voltage battery systems
• USB peripheral power regulation
• Portable electronic devices requiring efficient voltage step-down

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

Verify the specific suffix configuration against the official datasheet to ensure correct output voltage and package type. Confirm RoHS compliance status as manufacturing variations may exist. Check component availability status directly with the manufacturer or authorized distributors prior to design finalization.

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

Select this component when a fixed 3.3V output is required from inputs up to 30V. Ensure the application utilizes an output capacitor value of at least 3.3µF to maintain stability. Verify that the thermal dissipation requirements fit within the MSOP-8 package constraints for the expected load current.

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

This part belongs to the MIC5239 family of µCap LDO regulators designed for high input voltage and low power consumption. The family offers various fixed output voltages and package options including SOIC-8, MSOP-8, and SOT-223 variants to suit different PCB layout and thermal management needs.

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

Consult the official datasheet for confirmed substitute part numbers within the same product family. Ensure any replacement maintains the 3.3V fixed output, 500mA current rating, and compatible pinout.