BA18DD0WHFP-TR

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

The BA18DD0WHFP-TR is a positive fixed-output Low Dropout (LDO) regulator manufactured by Rohm Semiconductor. It provides a stable 1.8V output with a maximum current capacity of 2A. The device operates within an input voltage range of 3V to 25V and features a typical dropout voltage of 0.45V at full load. Output accuracy is maintained at ±1.0% at 25°C. Key electrical specifications include a ripple rejection of 55dB, line regulation of 50mV, and load regulation of 200mV. It incorporates thermal shutdown and over-current protection for reliability.

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

• Low-saturation PNP output transistor design for efficient power management
• Integrated thermal shutdown and over-current protection mechanisms
• High precision fixed output voltage with ±1% tolerance

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

• Battery-powered portable electronic devices requiring low quiescent current
• Embedded systems needing stable 1.8V logic supply rails
• Industrial control modules operating in high-temperature environments

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

Verify the specific suffix WHFP-TR confirms the HRP-5 surface-mount package and tape-and-reel shipping format. Confirm the 1.8V fixed output variant matches system requirements. Ensure RoHS compliance documentation is available for regulatory adherence. Cross-reference the manufacturer part number against official Rohm databases to avoid counterfeit components.

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

Select this component when a 2A current capability is required alongside a tight 1.8V output tolerance. The HRP-5 package suits surface-mount assembly processes. Consider the 0.45V dropout characteristic for efficiency in battery-operated applications where input voltage may approach the output level. Verify thermal performance under maximum load conditions given the TO220FP or equivalent thermal constraints.

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

This part belongs to Rohm's standard fixed-output LDO regulator family designed for general-purpose power management. The series offers various output voltages and current ratings, utilizing low-saturation technology to minimize power loss. The BA18DD0WHFP-TR specifically addresses applications requiring robust 2A performance in a compact surface-mount footprint.

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

Direct substitutes within the same Rohm BDxFDA series with matching 1.8V output and 2A rating should be verified for pin compatibility. Alternative manufacturers offering similar 2A LDOs must match the 35V max voltage and HRP-5 package dimensions.