BD733U2EFJ-CE2

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

The BD733U2EFJ-CE2 is a fixed-output Low Dropout (LDO) linear voltage regulator manufactured by ROHM Semiconductor. It provides a stable 3.3 V output with a maximum continuous current of 200 mA. The device features an ultra-low quiescent current of 6 µA and high accuracy, ensuring reliable performance in battery-powered applications. It operates within an input voltage range of 4.37 V to 45 V, with a maximum withstand voltage of 50 V. Key electrical parameters include a typical dropout voltage of 0.6 V at full load, a ripple rejection ratio of 63 dB, and a load regulation of 5 mV. The component is designed for surface-mount installation in an 8-HTSOP-J package.

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

• Ultra-low standby current consumption of 6 µA for extended battery life
• High output voltage accuracy suitable for precision circuits
• Integrated thermal shutdown and overcurrent protection for enhanced reliability
• Capable of using ceramic output capacitors without stability issues

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

• Automotive electronic systems requiring AEC-Q100 qualified components
• Battery-operated devices needing low quiescent current regulators
• Systems connecting directly to vehicle batteries with high input voltage tolerance
• General-purpose power management in compact embedded electronics

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

Verify the specific suffix 'CE2' matches the required tape-and-reel packaging configuration for automated assembly processes. Confirm that the HTSOP-J8 package dimensions align with the target PCB footprint and soldering profile requirements. Ensure the application environment stays within the specified -40°C to +125°C operating temperature range to maintain rated performance and longevity.

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

Select this regulator when a fixed 3.3 V rail is needed with minimal static power draw. It is appropriate for inputs up to 45 V, eliminating the need for pre-regulation stages in some automotive contexts. Consider the 200 mA current limit against peak load demands. The inclusion of ceramic capacitor compatibility simplifies bill-of-materials and reduces board space compared to older LDO designs requiring tantalum or electrolytic outputs.

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

This component belongs to the BD733L2 series of low standby current LDO regulators from ROHM. The series is engineered for automotive and industrial applications where energy efficiency and high input voltage tolerance are critical. The BD733U2EFJ-CE2 variant specifically denotes the 3.3 V fixed output version in the HTSOP-J8 package, offering a balance of performance and size for modern surface-mount designs.

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

Direct pin-compatible alternatives within the same family include the BD733L2FP-C in a TO252-3 package, though thermal characteristics differ. Cross-family replacements require verification of input voltage ranges, current capabilities, and package footprints to ensure functional equivalence without redesigning the host circuit.