BA90DD0T

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

The BA90DD0T is a 2A fixed output Low Dropout (LDO) regulator manufactured by ROHM Semiconductor. It features a PNP output transistor architecture designed for low saturation voltage characteristics. The device provides a maximum withstand voltage of 35V and operates with an input voltage range from 3V to 25V. Key electrical specifications include a typical dropout voltage of 0.45V at full load, ripple rejection of 55dB, and load regulation of 50mV. The unit incorporates thermal shutdown, over-current protection, and over-voltage protection mechanisms. It requires a 22µF output capacitor and functions within an operating temperature range of -40°C to 125°C.

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

• PNP output low saturation type design for efficient voltage regulation
• Integrated thermal shutdown and over-current protection for system safety
• High precision fixed output voltage with ±1.0% accuracy

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

• General purpose power supply circuits requiring stable 9V output
• Industrial control systems needing robust linear regulation
• Automotive electronics applications within specified temperature ranges

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

Verify the specific suffix and package configuration against current manufacturer documentation before ordering. Confirm that the component status aligns with project lifecycle requirements, as availability may vary. Ensure that the required output capacitance and thermal management solutions are compatible with the final assembly design to maintain regulatory compliance and performance stability.

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

Select this component when a fixed 9V output is required with high current capability up to 2A. Consider the TO-220FP-3 package for through-hole mounting and adequate heat dissipation. Evaluate the dropout voltage requirements relative to the minimum input voltage to ensure proper regulation under all load conditions. Verify compatibility with existing PCB layout constraints and thermal design parameters.

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

The BA90DD0T belongs to the BAxxDD0T series of 2A fixed output LDO regulators from ROHM Semiconductor. This series utilizes PNP output transistors to achieve low saturation voltages, distinguishing it from NPN-based alternatives. The components are designed for reliability in demanding environments, offering comprehensive protection features including thermal shutdown and over-current limiting within a standard industrial temperature range.

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

Public confirmed substitute part numbers are not available in the provided source material.