BD33HA3WEFJ-E2

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

The BD33HA3WEFJ-E2 is a positive low-dropout linear voltage regulator manufactured by ROHM Semiconductor. It provides a fixed 3.3 V output with a maximum load current of 300 mA. The device operates within an input voltage range of 4.5 V to 8 V. Key electrical specifications include a line regulation of 1% and a load regulation of 1.5%. Dropout voltage ranges from 600 mV to 900 mV at full load, with an input bias current of 900 uA. The unit supports surface-mount installation in an HTSOP-J8 package and functions within 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 for stable power supply applications
• Low dropout characteristic ensuring efficient operation near input limits
• Integrated thermal protection mechanisms for safe operation under overload conditions

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

• Portable battery-powered electronic devices requiring stable 3.3 V logic levels
• Embedded systems and microcontroller power management circuits
• Industrial control modules operating within specified voltage and temperature ranges

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

Verify the complete part number including the suffix E2 to ensure compliance with specific manufacturing revisions and environmental standards. Confirm that the required output current does not exceed 300 mA under all operating conditions. Check datasheet thermal resistance values against your PCB layout to ensure junction temperature remains within safe limits during continuous operation.

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

Select this component when a fixed 3.3 V rail is needed with moderate current demands up to 300 mA. It is suitable for systems where input voltage varies between 4.5 V and 8 V. Consider alternative packages if higher current capacity or different pin configurations are required. Ensure the application environment stays within the -25°C to +85°C operational temperature range.

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

This regulator belongs to the BD33HA3WEFJ series of low-dropout voltage controllers from ROHM Semiconductor. These components are designed for general-purpose power management in compact electronic designs. The HTSOP-J8 package allows for space-efficient surface-mount assembly on printed circuit boards.

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

Direct substitutes may include other ROHM LDO regulators with similar 3.3 V output and 300 mA capability, such as the BD33GA3WEFJ-E2, provided input voltage constraints align with system requirements.