Output voltage fixed-type Multi-channel System Power Supply IC - BD8174MUV

The BD8174MUV is a system power supply IC that generates 6 power supply channels required by TFT-LCD panels on a single chip. Output voltage and sequence is fixed so that it is possible to control output with few external components.

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* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
BD8174MUV-E2 Active(Inquiry) VQFN048V7070 1500 1500 Taping Yes
Grade Standard
Vin1(Min.)[V] 10.0
Vin1(Max.)[V] 14.0
SW frequency(Max.)[MHz] 0.7
Output Source Voltage[V] to 18
Output Logic Voltage[V] 3.3
Output Logic Voltage2[V] 1.2/1.5/1.8
Output Gate Voltage[V] + 35.2 / - 6.0
Start up Sequence Circuit Yes
VCOM[ch] 1
Auto Data Read No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
    • Step-up DC/DC converter with built-in 3A FET
    • Synchronous step-down DC/DC converter
      with built-in 2A FET
    • High Voltage LDO (50mA)
    • Low Voltage LDO (400mA)
    • Positive/ Negative charge pumps (Integrated-diode)
    • 10bit DAC 4CH
    • VCOM amplifier
    • Gate shading function
    • All-output shut down function
    • Power Good function
    • Fixed Frequency (700kHz)
    • Protection circuit :Under-voltage lockout protection circuit
      Thermal shutdown circuit
      Over current protection circuit
      Over voltage protection circuit
      Timer-latch type short-circuit protection circuit
    • Constant startup sequence
    • VQFN048V7070 package
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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.