Multi-channel Power Supply IC for Car Audio Systems

The BD49101AEFS-M LSI is a multi-channel power supply IC that can provide all necessary supply voltages for automobile audio systems. The IC has two Switching Power Supplies (DCDC), five Regulators (REG) and a High Side switch. This single power supply system can provide the required voltages to all systems including the MCU, CD, tuner, USB, illumination, audio circuits and others. The IC system is based on switching regulator which has high efficiency then you can suppress heat of IC than before. And it has low power mode operation or voltage control function so that you can get (1) High Efficiency (2) Low IQ and (3) easiness of power supply design.

Product Detail

Part Number | BD49101AEFS-ME2
Status | Recommended
Package | HTSSOP-A44
Unit Quantity | 1500
Minimum Package Quantity | 1500
Packing Type | Taping
RoHS | Yes

Functional Safety:

Category : FS supportive
A product that has been developed for automotive use and is capable of supporting safety analysis with regard to the functional safety.








SW frequency(Max.)[MHz]


Circuit Current(Typ.)[mA]


Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]


Package Size [mm]

18.5x9.5 (t=1)

Common Standard

AEC-Q100 (Automotive Grade)

Find Similar


  • AEC-Q100 Qualified
  • Integrated 7 channels of Power Supply for Car Audio
    ・2 DCDC (Integrated 1 Controller)
    ・5 REG
  • 1 High Side Switch channel
  • Integrated Low Power Standby REG for MCU Power Supply
  • REG4 Cable Impedance Compensation
  • I²C Interface
  • Selectable Oscillation Frequency using External Resistance
  • External Clock Synchronization
  • Power Supply Control Function (Power on/off Sequencer).
  • Low Voltage, Over Voltage and REG4 Over Current Detect Flag
  • Integrated Protection Circuitry:
    ・Over Voltage Input Protection
    ・Over Current Protection
    ・Thermal Shutdown

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