LR745N3-G-P003

Power Management - Specialized Overview

The LR745N3-G-P003 is a specialized power management IC designed for SMPS start-up applications. It operates with an input voltage range of 35 V to 450 V and provides a fixed output voltage between 18 V and 24 V. The device delivers an output current of 3 mA with a supply current of 500 µA. It functions within a temperature range of -55°C to +125°C and is housed in a 3-pin TO-92 package.

Power Management - Specialized Feature Summary

• High input voltage capability up to 450 V
• Fixed output voltage regulation
• Low supply current consumption
• Wide operating temperature range

Power Management - Specialized Applications

• SMPS start-up circuits
• Power supply initialization
• High voltage system control

Power Management - Specialized Procurement Notes

Verify the specific suffix P003 indicates the TO-92 tape and reel packaging configuration. Confirm RoHS compliance status through official Microchip documentation. Ensure the ordering part number matches the required package style and moisture sensitivity level for your assembly process.

Power Management - Specialized Selection Notes

Select this component when high input voltage tolerance is required for power supply start-up sequences. The fixed output voltage simplifies design compared to adjustable regulators. Consider the TO-92 package constraints for thermal management and board space availability in high-voltage environments.

Power Management - Specialized Part Context

This part belongs to the LR745 series of specialized PMICs from Microchip Technology. These devices are engineered specifically for managing the initial power-up phases of switching mode power supplies, ensuring stable operation before main regulation takes over.

Power Management - Specialized Replacement Considerations

Check for LR745N3-G variants with different suffixes if alternative packaging is needed. Verify pinout compatibility with existing designs before substituting.