BU91795MUF-ME2

Overview

The BU91795MUF-ME2 is a low duty LCD segment driver designed for automotive applications, supporting up to 48 segments with 1/4 duty and 1/3 bias configurations. It operates on a supply voltage range of 2.5 V to 6 V with a maximum power dissipation of 270 mW. The device features an I2C interface with a maximum clock frequency of 300 kHz and consumes a maximum supply current of 250 uA. Qualified under AEC-Q100 Grade 2 standards, it functions within a temperature range of -40°C to +105°C and is housed in a VQFN-24 package.

Feature Summary

• Integrated display data RAM reduces microcontroller load by eliminating the need for external components.
• Supports high frame rate driving and high contrast VA LCD displays through integrated voltage driving circuits.
• Wettable flanks QFN package enhances inspectability and reliability for surface mount applications.

Applications

• Automotive instrument cluster displays
• In-car infotainment system interfaces
• Vehicle control panel indicators

Procurement Notes

Verify the specific suffix ME2 against the manufacturer's official datasheet to confirm pinout and packaging details. Ensure compatibility with AEC-Q100 Grade 2 requirements for your target automotive environment. Cross-reference the VQFN-24 footprint dimensions during PCB layout to prevent assembly errors. Confirm RoHS compliance status if required by your regional regulations before finalizing procurement orders.

Selection Notes

Select this component when designing automotive displays requiring minimal external circuitry and low power consumption. It is suitable for systems needing I2C connectivity and support for both TN and VA LCD types. Consider the 48-segment limit and 1/4 duty cycle constraints when determining display complexity. The wide operating voltage range allows flexibility in power supply design across different vehicle architectures.

Part Context

This part belongs to ROHM's series of automotive-grade LCD drivers, specifically engineered for low-duty applications. It integrates essential functions like oscillation circuits and power-on reset, simplifying the overall system design. The inclusion of functional safety supportive characteristics aligns with modern automotive electronic architecture trends.

Replacement Considerations

BU91795MUF-M is listed as an alias for this component. Verify electrical and mechanical equivalence before substitution. No other direct cross-references are documented in the provided source material.