BU33TD3WG-TR

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

The BU33TD3WG-TR is a fixed positive low-dropout linear regulator manufactured by ROHM Semiconductor, designed for surface-mount applications in SSOP-5 packages. It delivers a stable 3.3V output with a maximum current capacity of 200mA. The device operates within an input voltage range of 1.7V to 6V and maintains a typical dropout voltage of 240mV at full load. Key electrical specifications include a quiescent current of 60µA, line regulation of 2mV, and load regulation of 10mV. It features a typical power supply rejection ratio of 70dB at 1kHz and supports an operating temperature range from -40°C to +85°C.

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

• Integrates built-in over-current protection and thermal shutdown circuits for enhanced reliability.
• Supports ON/OFF control functionality via an enable pin for efficient power management.
• Includes a built-in output discharge circuit to rapidly reduce output voltage when disabled.
• Compatible with small ceramic capacitors, requiring only 0.47µF input and output capacitance.

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

• Battery-powered portable electronic equipment
• RF module power supplies
• Camera module power regulation

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

Verify the specific manufacturer part number against official ROHM documentation to ensure compatibility with design requirements. Confirm that the SSOP-5 package dimensions and pinout align with the target PCB footprint. Check the latest datasheet revision for any updates regarding electrical characteristics or recommended operating conditions before finalizing procurement decisions.

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

Select this component when a fixed 3.3V output is required with moderate current demands up to 200mA. It is suitable for designs prioritizing low quiescent current consumption and compact surface-mount packaging. Ensure the input voltage remains within the specified 1.7V to 6V range to maintain proper regulation and avoid excessive power dissipation within the thermal limits of the SSOP-5 package.

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

This component belongs to the BUxxTD3WG series of FULL CMOS LDO regulators from ROHM Semiconductor. The series is characterized by high accuracy, low current consumption, and versatile packaging options. These regulators are engineered for performance in noise-sensitive applications, offering excellent ripple rejection and load responsiveness while maintaining a small physical footprint suitable for space-constrained portable devices.

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

BU33UC3WG-TR is listed as a substitute option, though it offers a higher output current of 300mA and may have different static current characteristics. Verify pin compatibility and thermal performance when considering alternatives, as package variations or updated series revisions may exist. Always consult the manufacturer's official substitution guidelines to ensure functional equivalence.

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

What is the minimum capacitor requirement for stable operation?

The device is compatible with small ceramic capacitors, requiring a minimum of 0.47µF for both the input and output capacitors.

Does the BU33TD3WG-TR include protection features?

Yes, it includes built-in over-current protection and thermal shutdown circuits to protect the device under fault conditions.