BU31TD3WG-TR

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

The BU31TD3WG-TR is a fixed positive low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 3.1 V with a maximum output current of 200 mA. The device operates within an input voltage range of 1.7 V to 6 V and features a typical power supply rejection ratio (PSRR) of 70 dB. Key electrical parameters include a dropout voltage of 240 mV, line regulation of 2 mV, and load regulation of 10 mV. Quiescent current consumption is 35 uA. The component supports operation from -40°C to +85°C and is housed in an SSOP-5 package.

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

• High accuracy detection with low current consumption
• Compatible with small ceramic capacitors for input and output filtering
• Built-in output discharge circuit for efficient power management
• Integrated over-current protection and thermal shutdown circuits

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

• RF modules requiring stable power supply
• Camera modules in portable devices
• Battery-powered portable equipment

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

Verify the specific suffix and manufacturer part number against official ROHM documentation to ensure compatibility with design requirements. Confirm that the SSOP-5 package dimensions and pinout match the PCB footprint. Check for any recent lifecycle status updates or recommended replacements if the component is designated as not recommended for new designs.

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

Select this regulator when a fixed 3.1 V output is required with moderate current capability up to 200 mA. Consider its low quiescent current for battery-operated applications. Ensure the input voltage remains within the specified 1.7 V to 6 V range. Verify that the thermal performance in the SSOP-5 package meets the power dissipation limits under expected operating conditions.

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

This component belongs to the BUxxTD3WG series of FULL CMOS LDO regulators. The series is characterized by high performance, excellent noise characteristics, and fast load responsiveness despite low circuit current consumption. These regulators are designed for versatile package mounting, specifically utilizing the compact SSOP5 form factor suitable for space-constrained electronic designs.

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

BU24TD3WG-TR: Same series, different output voltage.