Datasheet Multi-Channel Power Supply LSI Series for Car Electronics Multi-channel Power Supply IC for Car Audio Systems BD49101AEFS-M General Description Key Specifications The BD49101AEFS-M LSI is a multi-channel power Input Voltage Range: 5.5V to 25V(VIN0=BCAP) supply IC that can provide all necessary supply voltages DCDC1(controller): for automobile audio systems. The IC has two Switching DCDC2(with low power mode for MCU): 1A Power Supplies (DCDC), five Regulators (REG) and a REG1(output voltage variable): 500mA High Side switch. This single power supply system can REG2(output voltage variable): 100mA provide the required voltages to all systems including the REG3(output voltage variable): 300mA MCU, CD, tuner, USB, illumination, audio circuits and REG4(output voltage variable for USB): 1.5A others. REG5(output voltage variable): 50mA The IC system is based on switching regulator which High side SW: 500mA has high efficiency then you can suppress heat of IC Standby Current: 100A(Typ) than before. And it has low power mode operation or REG4 Over Current Detect Accuracy: 20% voltage control function so that you can get High Operating Temperature Range: -40C to +85C DCDC Switching Frequency: 200kHz to 500kHz Efficiency Low IQ and easiness of power supply design. Package W(Typ) x D(Typ) x H(Max) HTSSOP-A44 18.50mm x 9.50mm x 1.00mm Features (Note1) 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 2 I C Interface Selectable Oscillator Frequency using External Resistance External Clock Synchronization Power Supply Control Function (Power on/off Sequencer). HTSSOP-A44 Low Voltage, Over Voltage and REG4 Over Current Detect Flag Integrated Protection Circuitry: Over Voltage Input Protection Over Current Protection Thermal Shutdown (Note1:Grade3) Applications Car Audio and Infotainment Product structure:Silicon monolithic integrated circuit This product is not designed for protection against radioactive rays . www.rohm.com TSZ02201-0V3V0AP00060-1-2 2015 ROHM Co., Ltd. All rights reserved. 1/41 TSZ2211114001 23.Jun.2016 Rev.002 BD49101AEFS-M Pin Configuration VOUT5 ADJ5 VIN0 EN BCAP REG4EN VINSW ECO N.C. BSENS HSW REG4OCB GND4 SDA SW2 SCL FB2 SYNC INV2 GND1 VOUT0 RT VIN1 GND2 ADJ1 VOUT3 VOUT1 ADJ3 ADJ2 VIN3 VOUT2 VIN4 GND3 CLCAL N.C. VOCAL VIN2 ADJ4 SNSH VOUT4 SNSL INV1 GATE1 FB1 Figure 1. Pin Configuration(s) Pin Description Pin Pin Symbol Function Symbol Function NO NO 1 VOUT5 REG5 voltage output 23 FB1 DCDC1 Error Amp output 2 VIN0 Battery power supply connection pin 24 INV1 DCDC1 Error Amp Input 3 BCAP Back-up capacity connection pin 25 VOUT4 REG4 voltage output 4 VINSW Power supply for high side switch 26 ADJ4 REG4 output voltage adjustment REG4 output USB cable impedance 5 N.C. 27 VOCAL calibration setting 6 HSW High side switch output 28 CLCAL REG4 over current protection setting 7 GND4 Ground 29 VIN4 Power supply for built-in FET REG4 8 SW2 DCDC2 switching output 30 VIN3 Power supply for built-in FET REG3 9 FB2 DCDC2 Error Amp output 31 ADJ3 REG3output voltage adjustment 10 INV2 DCDC2 Error Amp Input 32 VOUT3 REG3 voltage output 11 VOUT0 STBREG voltage output 33 GND2 Ground 12 VIN1 Power supply for built-in FET REG1 34 RT Oscillator frequency setting 13 ADJ1 REG1 output voltage adjustment 35 GND1 Ground 14 VOUT1 REG1 voltage output 36 SYNC External synchronization signal input 2 15 ADJ2 REG2 output voltage adjustment 37 SCL I C-bus clock input 2 16 VOUT2 REG2 voltage output 38 SDA I C-bus data input 17 GND3 Ground 39 REG4OCB Error flag output 18 N.C. 40 BSENS Error flag output 19 VIN2 Power supply for built-in FET REG2 41 ECO Low power mode switch 20 SNSH DCDC1 current detection 42 REG4EN REG4 Enable 21 SNSL DCDC1 current detection 43 EN Enable 22 GATE1 DCDC1 outside FET gate drive 44 ADJ5 REG5 output voltage adjustment N.C pins are not connected into internal circuits. www.rohm.com TSZ02201-0V3V0AP00060-1-2 2015 ROHM Co., Ltd. All rights reserved. 2/41 TSZ2211115001 23.Jun.2016 Rev.002