BU6821G-TR

Specialized ICS Overview

The BU6821G-TR is a fractional pulse rate converter manufactured by Rohm Semiconductor, designed for precise frequency division in motor control applications. It operates within a supply voltage range of 2.7 V to 5.5 V and features an output current capability of 5 mA. The device is housed in a compact 5-SSOP (SC-74A, SOT-753) surface-mount package suitable for space-constrained designs. It supports conversion ratios such as 21:12 and functions reliably across an operating temperature range from -40°C to +85°C.

Specialized ICS Feature Summary

• Fractional pulse rate conversion with specific ratios like 21:12
• Low supply voltage operation ranging from 2.7 V to 5.5 V
• Compact 5-pin SSOP surface-mount packaging

Specialized ICS Applications

• Air Conditioners
• Air Purifiers

Specialized ICS Procurement Notes

Verify the exact conversion ratio configuration required for the specific application design. Confirm that the 5-SSOP footprint matches the PCB layout constraints. Ensure the operating environment stays within the specified -40°C to +85°C thermal limits for reliable performance.

Specialized ICS Selection Notes

Select this component when fractional frequency division is required for fan or motor speed control in low-voltage systems. Compare against standard integer dividers if higher precision is needed. Verify compatibility with the driving circuit's voltage levels and ensure the 5 mA output current meets the load requirements.

Specialized ICS Part Context

This part belongs to Rohm Semiconductor's specialized IC portfolio for motion control. It serves as a dedicated solution for generating precise pulse rates from input clocks, commonly used in HVAC and air purification systems where accurate fan speed regulation is critical.

Specialized ICS Replacement Considerations

Check for direct pin-compatible alternatives within the same series. Verify that any substitute maintains the 21:12 conversion ratio and 5-SSOP package dimensions.