BD33HC5WEFJ-E2

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

The BD33HC5WEFJ-E2 is a high-accuracy linear low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed positive output voltage of 3.3 V with a maximum output current capability of 1.5 A. The device operates within an input voltage range of 4.5 V to 8 V and maintains a load regulation of 1.5%. Quiescent current is specified at 600 uA. It features a thermal shutdown circuit, overcurrent protection, and an ON/OFF switch function that reduces standby current to 0 µA. The component is housed in an HTSOP-J8 surface-mount package suitable for digital home appliances.

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

• Integrated overcurrent protection and thermal shutdown circuits prevent IC damage during short circuits or overload conditions.
• Features an ON/OFF switch function that reduces circuit current to 0 µA when disabled, supporting low-power standby modes.
• Designed for use with ceramic output capacitors to assist in system miniaturization and extended lifespan.

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

• Digital home appliances
• General-purpose power management in portable electronics
• Battery-powered devices requiring stable 3.3V supply

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. Confirm RoHS status through official datasheets as required by project specifications. Check for lead-free certification if mandated by regional regulations. Ensure compatibility with HTSOP-J8 footprint during PCB layout. Validate operating temperature range against environmental constraints.

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

Select this component for applications requiring a fixed 3.3V output with up to 1.5A load capacity. It is suitable where input voltages remain between 4.5V and 8V. Consider the 600 uA quiescent current for battery life calculations. The HTSOP-J8 package offers thermal performance benefits. Verify that ceramic capacitors are used for stability as per design guidelines.

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

This LDO belongs to the BD33HC5WEFJ series from ROHM Semiconductor. It is categorized under PMIC - Power Management ICs. The device is designed for high accuracy with ±1.0% output voltage tolerance at 25°C. It supports soft start functionality to limit inrush current. The series is intended for general consumer electronics rather than automotive applications.

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

BD33HC5JEFJ is recommended as an alternative developed on different production lines with identical electrical characteristics. Verify pinout and thermal pad configuration compatibility before substitution. Ensure the replacement meets the same HTSOP-J8 package requirements.