BD33HC0WEFJ-E2

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

The BD33HC0WEFJ-E2 is a positive low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 3.3 V with a maximum output current of 1.0 A. The device operates within an input voltage range of 4.5 V to 8 V and features a typical dropout voltage of 600 mV, with a maximum of 920 mV. It includes internal protection mechanisms such as thermal shutdown and overcurrent protection. The regulator is housed in an HTSOP-J8 surface-mount package and is designed for operation across a temperature range of -25°C to +85°C.

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

• Fixed 3.3 V output voltage regulation
• Integrated thermal shutdown and overcurrent protection circuits
• Low dropout voltage characteristic for efficient power conversion
• Surface-mount HTSOP-J8 packaging for compact board integration

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

• Portable electronic devices requiring stable 3.3 V logic supply
• Battery-powered systems utilizing single-cell lithium-ion or alkaline sources
• Embedded microcontroller power rails
• Communication modules needing regulated low-noise power

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

Verify the complete part number including the suffix E2 for lead-free compliance when ordering. Confirm that the application circuit includes appropriate input and output capacitors as specified in the official datasheet to ensure stability. Check the thermal dissipation requirements based on the expected load current and ambient temperature conditions to prevent triggering internal thermal shutdown during operation.

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

Select this component when a fixed 3.3 V output at up to 1.0 A is required from an input source between 4.5 V and 8 V. Consider the HTSOP-J8 package size constraints and the specific thermal performance needs of the enclosure. Compare against other members of the BD33 series if different current ratings or input voltage ranges are needed for the design.

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

This part belongs to the BD33 series of high-accuracy LDO regulators from ROHM. It shares the same HTSOP-J8 footprint and basic protection features with variants offering different output currents, such as the BD33HA3WEFJ-E2 (300 mA) and BD33HC5WEFJ-E2 (1.5 A). The series is designed for general-purpose power management in consumer electronics.

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

Direct pin-compatible substitutes within the same family include BD33HA3WEFJ-E2 for lower current applications and BD33HC5WEFJ-E2 for higher current demands. Ensure the replacement variant meets the specific 1.0 A load requirement and input voltage constraints of the original design.