New LED Driver ICs with Built-in Current Driver Boost DC/DC Converter for Automotive Applications

ROHM has developed the new 4ch/6ch LED driver ICs, BD83A04EFV-M, BD83A14EFV-M, and BD82A26MUF-M designed for medium to large-size automotive displays in-car infotainment and instrument clusters. These LED drivers for LCD backlights combine proprietary low-power technology with seamless PWM dimming which eliminates flickering when changing display brightness from low to high.

These new products leverage proprietary low-power consumption technology to reduce losses in LED driver current control circuits. The result is 20% lower overall IC power consumption compared to conventional products under typical conditions (80mA/ch LED circuit current, 12V power supply). This contributes to lower power consumption in medium- to large-sized automotive displays where power consumption is an issue. Moreover, all these ICs are equipped with both DC and PWM dimming to meet a wide range of requirements.

Features

• AEC-Q100 Qualified(Note 1)

• Functional Safety Supportive Automotive Products

• Built-in 4/6 ch Current Driver for LED Drive

• Current Mode Boost DC/DC Converters

• Load Switch (M1) Control Pin

• PWM Dimming

• Spread Spectrum Function

• DC/DC Converter Oscillation Frequency External Synchronization Function

• LSI Protect Functions (UVLO, OVP, TSD, OCPL)

• LED Anode/Cathode Short Circuit Protection Function

• LED Open/Short Protection Function

Applications

• Instrument clusters

• Car infotainment

• Head-up displays (HUDs)

• Electronic mirrors (side/rear view)

Availability & Pricing

These new products are now available in mass production at $7.0/unit.