BD49101AEFS-M_16 Datasheet, PDF (1/45 Pages) Rohm – Multi-channel Power Supply IC for Car Audio Systems

Datasheet
Multi-Channel Power Supply LSI Series for Car Electronics
Multi-channel Power Supply IC
for Car Audio Systems
BD49101AEFS-M
General Description
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 ①High
Efficiency ②Low IQ and ③easiness of power supply
design.
Features
 AEC-Q100 Qualified^(Note1)
 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 Oscillator 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
(Note1:Grade3)
Key Specifications
 Input Voltage Range:
5.5V to 25V(VIN0=BCAP)
 DCDC1(controller):
 DCDC2(with low power mode for MCU):
1A
 REG1(output voltage variable):
500mA
 REG2(output voltage variable):
100mA
 REG3(output voltage variable):
300mA
 REG4(output voltage variable for USB):
1.5A
 REG5(output voltage variable):
50mA
 High side SW:
500mA
 Standby Current:
100µA(Typ)
 REG4 Over Current Detect Accuracy:
±20%
 Operating Temperature Range: -40°C to +85°C
 DCDC Switching Frequency: 200kHz to 500kHz
Package
HTSSOP-A44
W(Typ) x D(Typ) x H(Max)
18.50mm x 9.50mm x 1.00mm
HTSSOP-A44
Applications
 Car Audio and Infotainment
○Product structure:Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed for protection against radioactive rays
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TSZ02201-0V3V0AP00060-1-2
23.Jun.2016 Rev.002