BU91797FUV-ME2

Overview

The BU91797FUV-ME2 is a low duty LCD segment driver designed for automotive applications, supporting up to 144 segments with a 1/4 duty and 1/3 bias configuration. It operates on a 2-wire serial interface (I2C) with a maximum clock frequency of 300 kHz. The device functions within a supply voltage range of 2.5 V to 6 V and consumes a maximum power dissipation of 640 mW. It is qualified under AEC-Q100 Grade 2 standards, ensuring reliability in harsh environments with an operating temperature range from -40°C to +105°C. The IC is housed in a 48-TSSOP-CV package.

Feature Summary

• Supports high-precision VA LCD driving with integrated display RAM to reduce microcontroller load
• Complies with AEC-Q100 Grade 2 automotive qualification standards for functional safety support
• Enables low-power operation through internal RAM integration without requiring external components

Applications

• Automotive instrument cluster displays
• Car navigation system interfaces
• Multi-information display units in vehicles

Procurement Notes

Verify the specific suffix ME2 against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the ordering code aligns with the desired tape-and-reel packaging quantity of 2000 units. Cross-reference the AEC-Q100 Grade 2 certification status directly with ROHM Semiconductor documentation to validate automotive compliance before finalizing procurement specifications.

Selection Notes

Select this component when designing automotive displays requiring 144-segment capacity with strict thermal tolerance up to 105°C. The integrated RAM feature simplifies MCU firmware by handling display data storage internally. Verify that the host controller supports the required 2-wire serial interface timing and voltage levels compatible with the 2.5 V to 6 V operating range for seamless integration.

Part Context

This part belongs to the BU91797 series of low-duty LCD segment drivers manufactured by ROHM Semiconductor. The series is specifically engineered for automotive-grade reliability, featuring robust performance under varying environmental conditions. The BU91797FUV-ME2 variant utilizes a TSSOP-C48V package, distinguishing it from other form factors in the family while maintaining consistent core functionality and interface protocols.

Replacement Considerations

BU91797FUV-M is listed as an alias for this part number.