BU29TD3WG-TR

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

The BU29TD3WG-TR is a fixed positive Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a stable 2.9V output with a maximum continuous current of 200mA. The device operates within an input voltage range of 2.5V to 5.5V and features a typical dropout voltage of 330mV. It exhibits a typical Power Supply Rejection Ratio (PSRR) of 65dB, line regulation of 2mV, and load regulation of 20mV. Quiescent current consumption is 40µA, with a maximum power dissipation of 410mW. The unit is housed in a compact HVSOF-5 surface-mount package and supports an operating temperature range from -40°C to +85°C.

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

• Built-in overcurrent protection circuit and thermal shutdown circuit for enhanced reliability
• Compatible with small ceramic capacitors for input and output filtering
• Includes built-in output discharge circuit to rapidly reduce output voltage when disabled

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

• Battery-powered portable equipment
• RF modules requiring low noise regulation
• Camera modules in mobile devices

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

Verify the specific suffix against official ROHM documentation to confirm pinout and electrical characteristics, as variations may exist within the series. Confirm RoHS compliance status through the manufacturer's latest datasheet or environmental declaration before integration into regulated designs. Ensure the HVSOF-5 footprint matches the target PCB layout constraints precisely.

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

Select this component when a fixed 2.9V rail is required with moderate current capability up to 200mA. The low quiescent current makes it suitable for battery-operated systems where standby power conservation is critical. Verify that the input voltage remains above the minimum threshold of 2.5V while accounting for dropout voltage under full load conditions to maintain regulation stability.

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

This part belongs to the BUxxTD3WG series of standard CMOS LDO regulators designed for versatile package applications. The series emphasizes high accuracy and low current consumption, targeting portable electronics. The HVSOF-5 package offers a compact form factor similar to SOT-23-5 but with specific thermal and electrical properties defined by ROHM for space-constrained designs.

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

BU29TA2WHFV-TR: Similar 2.9V LDO but in HVSOF-5 package with different PSRR and dropout characteristics. BH29FB1WHFV-TR: 150mA variant with enable control and different package; verify current limits and feature sets.