BD733L2FP3-CE2

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

The BD733L2FP3-CE2 is a single-output low dropout regulator from ROHM Semiconductor, housed in an SOT-223-4(F) package. It provides a fixed 3.3 V output with a maximum current capability of 200 mA. The device features an ultra-low quiescent current of 6 µA (typical) and high output voltage accuracy of ±2%. It supports a supply voltage range from 4.37 V to 45 V, with an absolute maximum rating of 50 V. Key electrical parameters include a typical dropout voltage of 0.6 V at full load and a ripple rejection ratio of 63 dB at 120 Hz. The component is qualified under AEC-Q100 Grade 1 standards for automotive applications.

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

• Ultra-low quiescent current consumption designed for battery-connected systems
• Integrated overcurrent protection and thermal shutdown circuits
• Compatible with low ESR ceramic capacitors for phase compensation
• High output voltage accuracy of ±2% across operating conditions

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

• Automotive body electronics
• In-car audio systems
• Vehicle navigation systems

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

Verify the specific suffix CE2 corresponds to the embossed tape and reel packaging format as documented in the ordering information. Confirm that the component meets the required AEC-Q100 Grade 1 qualification status for your target application environment. Ensure the selected package variant matches the physical footprint requirements of your PCB design.

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

Select this regulator when direct battery connection requires minimal standby current drain. The PMOS output transistor enables low saturation voltage, improving efficiency under varying load conditions. Verify that the external capacitor selection maintains stability within the specified ESR range. Consider thermal dissipation limits based on the ambient temperature and PCB copper area available for heat spreading.

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

This component belongs to the BD7xxL2EFJ-C series of ultra-low quiescent current LDO regulators. The BD733L2FP3-CE2 specifically denotes the 3.3 V output version packaged in SOT-223-4(F). Other variants in the family include different output voltages and package types such as HTSOP-J8 and TO252-3, all sharing similar electrical characteristics and protection features.

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

Direct substitutes within the same series include BD733L2EFJ-CE2 (HTSOP-J8) and BD733L2FP-CE2 (TO252-3), provided the package footprint can be adapted.