Automotive Panel Power Management IC - BD81842MUV-M

The BD81842MUV-M is a power management IC for TFT-LCD panels which are used in car navigation, in-vehicle center panel, and instrument cluster. Incorporates high-power FET with low on resistance for large currents that employ high-power packages, thus driving large current loads while suppressing the generation of heat. A charge pump controller is incorporated as well, thus greatly reducing the number of application components. Also Gate Shading Function is included.

Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD81842MUV-ME2 Active VQFN24SV4040 2500 2500 Taping Yes
Grade Automotive
Vin1(Min.)[V] 2.0
Vin1(Max.)[V] 5.5
SW frequency(Max.)[MHz] 2.1
Output Source Voltage[V] 6 to 18
Circuit Current(Typ.)[mA] 1.2
VCOM[ch] 1
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
    • AEC-Q100 Qualified
    • Boost DC/DC converter: 18 V/2.5 A switch current.
    • Switching frequency: 2.1MHz
    • Operational Amplifier (short current 200mA)
    • Incorporates Positive /
      Negative Charge-pump Controllers.
    • Gate Shading Function
    • Protection circuits:
      Under Voltage Lockout
      Protection Circuit
      Thermal Shutdown Circuit (Latch Mode)
      Over Current Protection Circuit (AVDD)
      Timer Latch Mode Short Circuit Protection
      (AVDDSRC /VGL)
      Over / Under Voltage Protection Circuit for Boost
      DC/DC Output
      No SCP time included (185ms from UVLO-off)
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Technical Data
Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.