12V Input Multi-Channel System Power Supply IC - BM81004MUV

BM81004MUV is a system power supply for TFT-LCD panels used for liquid crystal TVs. This IC is incorporated with Negative and Positive charge pump controller and Gate Pulse Modulation (GPM) function. I also features built-in EEPROM to contain each setting voltage, soft start time etc.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BM81004MUV-ZE2 Active VQFN48V7070A 1500 1500 Taping Yes
Grade Standard
Vin1(Min.)[V] 8.6
Vin1(Max.)[V] 14.0
SW frequency(Max.)[MHz] 1.0
Output Source Voltage[V] to 18
Output Logic Voltage[V] Variable
Output Logic Voltage2[V] Variable
Output Gate Voltage[V] Variable
Start up Sequence Circuit Yes
VCOM[ch] 1
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
    • Step-up DC/DC converter (AVDD) (Synchronous rectification, Built-in load switch)
    • Step-down DC/DC converter 1 (VIO) (Non-synchronous rectification)
    • Step-down DC/DC converter 2 (VCORE)
    • Step-down DC/DC converter 3 (HAVDD) (Synchronous rectification)
    • Positive charge pump controller (VGH)
    • Negative charge pump controller (VGL)
    • Gate Pulse Modulation (GPM) function
    • High Voltage LDO (50mA)
    • 10bit DAC-controlled Gamma Amplifier 4ch
    • 8bit DAC-controlled VCOM Amplifier
    • Output voltage control by I²C
    • Built-in EEPROM
    • Switching Frequency 750kHz (AVDD, VIO)
    • Switching Frequency 1MHz (VCORE, HAVDD)
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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.