BU91796FS-ME2

Overview

The BU91796FS-ME2 is an automotive-grade LCD segment driver manufactured by ROHM Semiconductor. It supports up to 80 segments with a 1/4 duty and 1/3 bias configuration. The device operates on a 2-wire I2C interface, accepting supply voltages between 2.5 V and 6 V. Key electrical parameters include a maximum clock frequency of 300 kHz, a maximum power dissipation of 640 mW, and a maximum supply current of 30 uA. It is housed in a TSSOP-48 (SSOP-A-32) package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Supports high-precision VA liquid crystal displays through high voltage and high frame rate driving capabilities.
• Integrates display RAM to reduce microcontroller processing load and eliminate the need for external components.
• Achieves low power consumption without requiring additional external parts.

Applications

• Automotive instrument clusters
• Vehicle information displays
• Dashboard control panels

Procurement Notes

Verify the specific suffix ME2 against official ROHM documentation to confirm exact packaging and revision details. Ensure compatibility with AEC-Q100 Grade 2 requirements for your target automotive application. Confirm that the SSOP-A-32 package dimensions align with your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when designing automotive interfaces requiring up to 80 LCD segments. It is suitable for systems needing I2C connectivity and operation at temperatures up to 105°C. Consider its integrated RAM feature if minimizing MCU overhead is a priority. Verify that the 2.5V to 6V supply range matches your system's power architecture.

Part Context

This part belongs to the BU91796 series of low-duty LCD segment drivers designed specifically for automotive environments. It shares functional similarities with other members like the BU91796BMUF-ME2 but differs in package type and segment capacity. The series is characterized by its compliance with automotive reliability standards and integration of display memory.

Replacement Considerations

BU91796FS-M

FAQ

What is the maximum number of segments supported by this driver?

The BU91796FS-ME2 supports a maximum of 80 LCD segments.

Does this component require external components for basic operation?

No, the device achieves low power consumption and basic functionality without requiring external components due to its built-in display RAM.