BH28MA3WHFV-TR

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

The BH28MA3WHFV-TR is a fixed-output CMOS LDO regulator manufactured by ROHM Semiconductor. It provides a nominal output voltage of 2.8 V with a maximum output current of 300 mA. The device operates within an input voltage range of 2.5 V to 5.5 V and features a typical dropout voltage of 60 mV at 100 mA load. Key electrical parameters include a line regulation of 2 mV, load regulation of 9 mV, and a power supply rejection ratio (PSRR) of 60 dB at 1 kHz. The quiescent current is typically 65 µA. It offers ±1% output voltage accuracy and includes overcurrent and thermal shutdown protection. The component is housed in a 6-HVSOF package and supports operation from -40°C to +85°C.

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

• CMOS technology enables low quiescent current consumption for efficient power management.
• Integrated overcurrent and thermal shutdown protection circuits ensure device safety under fault conditions.
• Fixed 2.8 V output maintains high precision with ±1% tolerance across operating temperatures.

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

• Portable battery-powered electronic devices requiring stable low-voltage rails
• Embedded systems utilizing microcontrollers or memory modules
• General-purpose linear voltage regulation in compact surface-mount designs

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

Verify the specific suffix WHFV against the official datasheet to confirm pinout and packaging details. Confirm RoHS compliance status as required by project specifications. Check the lifecycle status, as this part may be designated as Not Recommended for New Designs (NRND). Ensure the supplier provides valid traceability documentation for quality assurance purposes before finalizing procurement orders.

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

Select this regulator when a precise 2.8 V rail is needed with up to 300 mA capability. Consider the 60 mV dropout voltage for headroom calculations relative to the minimum input voltage. Evaluate the 65 µA quiescent current impact on total system standby power. Compare thermal dissipation requirements based on the expected voltage drop and load current in the target application environment.

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

This component belongs to the BH28MA3 series of single-channel CMOS LDO regulators from ROHM. It is designed for applications requiring small footprint and high reliability. The HVSOF-6 package allows for space-constrained PCB layouts. The series emphasizes low noise and fast transient response characteristics suitable for sensitive analog and digital loads.

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

BU28TD3WG-TR is listed as a similar alternative by distributors. Verify compatibility regarding output voltage tolerance, current rating, and package dimensions before substitution. Cross-reference pinouts and protection feature sets to ensure functional equivalence in the existing circuit design.