BA09T

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

The BA09T is a fixed positive output low-dropout voltage regulator manufactured by ROHM Semiconductor. It provides a stable 9V output with a maximum current capacity of 1A. The device features a PNP output transistor for low saturation voltage operation. It incorporates built-in protection circuits including overcurrent protection, thermal shutdown, and overvoltage protection to ensure reliability under fault conditions. The component is designed for surface mount or through-hole applications depending on the specific package variant, such as TO-220FP.

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

• Low saturation voltage type PNP output structure
• Built-in overcurrent, thermal shutdown, and overvoltage protection circuits
• Compatible with standard three-terminal regulator designs

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

• Constant voltage power supplies
• Linear regulation from fluctuating DC input sources
• General purpose voltage regulation in electronic equipment

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

Verify the exact suffix (e.g., T, FP) to confirm package type and pin configuration. Confirm RoHS compliance status and lead times with authorized distributors. Ensure the selected variant matches the required thermal dissipation capabilities for the intended application environment.

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

Select this regulator when a fixed 9V output at up to 1A is required. Consider the thermal resistance of the chosen package for heat dissipation. Verify that the input voltage remains within the specified withstand voltage limits to prevent damage. Check compatibility with downstream load requirements regarding ripple rejection and line regulation.

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

The BA09T belongs to the BA00 series of fixed positive output low-dropout regulators. This family offers various fixed voltage options ranging from 3V to 15V. The series is characterized by its robust protection features and low saturation voltage, making it suitable for replacing older linear regulator standards in modern power supply designs.

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

The BA09TFP is listed as a similar part number within the same product family, offering the same electrical characteristics in a TO-220FP package. Verify pin-out compatibility before substitution.