BD18FD0WHFP-TR

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

The BD18FD0WHFP-TR is a fixed-output low-dropout (LDO) linear voltage regulator manufactured by ROHM Semiconductor. It provides a stable 18 V output with a maximum continuous current of 2 A. The device operates within an input voltage range up to 32 V and withstands voltages up to 35 V. It features a typical ripple rejection ratio of 55 dB at 120 Hz and maintains a line regulation of 20 mV. The unit is housed in an HRP-5 surface-mount package, designed for operation across a temperature range from -40°C to +105°C.

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

• Integrated overcurrent protection and thermal shutdown circuits prevent damage during short-circuit or overload conditions.
• Low saturation design enables efficient voltage regulation with minimal voltage drop under high load currents.
• Fixed output configuration eliminates the need for external feedback resistors, simplifying circuit layout.

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

• Power supply stages in industrial control systems requiring stable 18 V rails.
• Embedded electronics in automotive non-safety-critical modules.
• Consumer appliance power management units.

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

Verify the specific suffix TR indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status through official datasheets prior to integration. Ensure the HRP-5 footprint matches the target PCB design. Check for any regional export control classifications if applicable to the deployment location.

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

Select this component when a fixed 18 V output is required with 2 A capacity. The HRP-5 package offers thermal performance suitable for moderate power dissipation. Consider the 35 V withstand voltage for applications with potential input transients. Verify that the 55 dB PSRR meets the noise sensitivity requirements of the downstream circuitry.

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

This part belongs to the BDxxFD0 series of single-output LDO regulators from ROHM. The series includes both adjustable and fixed voltage variants, all supporting up to 2 A output current. These regulators are positioned as standard-grade components for general-purpose power management rather than specialized automotive or high-reliability aerospace applications.

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

No officially confirmed substitute part numbers are documented in the provided source material. Cross-referencing with other manufacturers requires independent verification of pin compatibility and electrical specifications.