System Power Supply ICs for car Audio S

  • RS Stock No. 184-8191
  • Mfr. Part No. BD49101AEFS-ME2
  • Manufacturer ROHM
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

The BD49101AEFS-M LSI is a multi-channel power supply IC that can provide all necessary supply voltages for auto mobile 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.

Integrated 7 channels of Power Supply for Car Audio
2 DCDC (Integrated 1 Controller)
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

Attribute Value
Minimum Input Voltage 5.5 V
Maximum Input Voltage 25 V
Output Current 1.5 A
Line Regulation 50 mV
Load Regulation 40 mV
Mounting Type Surface Mount
Package Type HTSSOP
Pin Count 44
Maximum Switching Frequency 500 kHz
Dimensions 18.5 x 7.5 x 0.85mm
Length 18.5mm
Width 7.5mm
Supply Voltage 5.5 → 25V
Maximum Operating Temperature +85 °C
Height 0.85mm
Automotive Standard AEC-Q100
Minimum Operating Temperature -40 °C
5 In stock for delivery within 3 working days
Price Each (In a Pack of 5)
SGD 9.33
(exc. GST)
SGD 9.98
(inc. GST)
Per unit
Per Pack*
5 - 20
25 - 45
50 - 495
500 +
*price indicative
Packaging Options:
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