BU21TD3WG-TR

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

The BU21TD3WG-TR is a standard CMOS LDO voltage regulator manufactured by ROHM Semiconductor. It provides a fixed positive output of 2.0 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 is 35 uA, with a maximum power dissipation of 540 mW. It is housed in an SSOP-5 package and functions reliably between -40°C and +85°C.

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

• Standard CMOS architecture for low quiescent current consumption
• Fixed positive output voltage configuration
• High power supply rejection ratio for noise reduction
• Compact surface-mount packaging

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

• Battery-powered portable devices
• Low-voltage digital logic circuits
• Microcontroller power supplies
• Sensor biasing networks

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

Verify the specific suffix and package type against the official ROHM datasheet to ensure compatibility with your design requirements. Confirm that the SSOP-5 footprint matches your PCB layout. Check for RoHS compliance status as indicated in the manufacturer's documentation before finalizing procurement orders.

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

Select this component when a stable 2.0 V rail is required from inputs as low as 1.7 V. Ensure the load current does not exceed 200 mA and thermal constraints allow for 540 mW dissipation in the SSOP-5 package. Verify that the operating temperature range meets your environmental specifications.

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

This part belongs to the BUxxTD3WG series of standard CMOS LDO regulators from ROHM. These devices are designed for general-purpose power management in compact electronic systems. The series offers various fixed output voltages while maintaining consistent performance characteristics across the family.

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

Direct substitutes may include other ROHM parts from the same BUxxTD3WG series with different output voltages, provided the pinout and package remain identical. Cross-brand replacements require careful verification of pin compatibility, current ratings, and thermal performance.