The BU12TD3WG is a low-dropout (LDO) linear regulator manufactured by Rohm Semiconductor. It is designed to provide a stable and regulated output voltage of 1.2V with a maximum output current of 300mA. Its small size and low power consumption make it suitable for various portable and battery-powered applications.

Applications

• Powering microcontrollers in low-power devices.
• Voltage regulation for sensors and analog circuits.
• Battery-powered IoT devices.
• Wearable electronics.
• Mobile phones and tablets.

Features

• Fixed output voltage: 1.2V.
• Output current: Up to 300mA.
• Low dropout voltage: 0.12V at 300mA.
• Input voltage range: 1.7V to 5.5V.
• Low quiescent current: 35μA (typical).
• Built-in overcurrent protection.
• Built-in thermal shutdown protection.
• Small WLCSP package (0.765mm x 1.165mm).
• RoHS compliant.

Benefits

• Stable output voltage: Provides a consistent and reliable power supply for sensitive electronic components.
• Low dropout voltage: Allows operation with low input voltages, extending battery life.
• Low quiescent current: Minimizes power consumption in standby mode, further extending battery life.
• Overcurrent and thermal protection: Protects the regulator and the connected load from damage.
• Small size: Enables compact designs for portable devices.
• RoHS compliant: Environmentally friendly.

Additional Details

The BU12TD3WG operates with an input voltage range from 1.7V to 5.5V and features a low dropout voltage of only 0.12V at 300mA. This allows the regulator to maintain a stable 1.2V output even when the input voltage is close to the output voltage. It also incorporates overcurrent protection and thermal shutdown protection to prevent damage in fault conditions. The small WLCSP package makes it ideal for space-constrained applications. External capacitors are required for stable operation. A ceramic capacitor of 1μF or greater is recommended for both the input and output. Refer to the Rohm Semiconductor datasheet for complete specifications and application guidelines.