STMicroelectronics

LD29080S33R

LD29080S33R Description

The LD29080S33R is a linear voltage regulator IC manufactured by STMicroelectronics, designed to provide a stable 3.3V output with an output current of up to 800mA. This device is part of the Linear & Switching Voltage Regulators category and is offered in a SOT223 package. Despite being classified as obsolete, it remains a reliable choice for certain applications due to its REACH unaffected status and compliance with ROHS3 regulations.

LD29080S33R Features

• Output Type: Fixed, ensuring a stable and consistent output voltage.
• Voltage - Input (Max): 13V, providing flexibility in input voltage sources.
• Current - Output: 800mA, suitable for applications requiring higher current demands.
• Number of Regulators: 1, simplifying the design for single-output voltage regulation.
• Output Configuration: Positive, making it ideal for applications requiring a positive voltage reference.
• Current - Supply (Max): 35 mA, indicating low power consumption in the supply line.
• Voltage - Output (Min/Fixed): 3.3V, a common voltage level for many microcontroller and digital circuits.
• Voltage Dropout (Max): 0.7V @ 800mA, ensuring efficient operation even under high current draw.
• Protection Features: Over Current and Over Temperature, safeguarding the device and the system from damage.
• PSRR: 67dB (120Hz), providing excellent power supply rejection ratio for noise filtering.

LD29080S33R Applications

The LD29080S33R is ideal for applications where a stable 3.3V output is required, such as:

• Microcontroller Power Supply: Due to its ability to provide a high output current, it is suitable for powering microcontrollers and other digital circuits.
• Portable Electronics: The fixed 3.3V output is a standard voltage for many portable devices, making this regulator a good fit.
• Industrial Controls: The overcurrent and overtemperature protection features make it a reliable choice for industrial applications where reliability is critical.

Conclusion of LD29080S33R

While the LD29080S33R is an obsolete product, it still offers a reliable solution for applications requiring a 3.3V, 800mA linear voltage regulator. Its fixed output, overcurrent and overtemperature protection, and compliance with environmental regulations make it a solid choice for designers looking for a dependable voltage regulator in existing systems or for applications where component availability is not a constraint. Despite its obsolescence, the LD29080S33R continues to be a viable option for specific use cases where its unique features and advantages are required.