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| BD9151MUV Datasheet, PDF (5/17 Pages) Rohm – Output 1.5A or Less High Efficiency Step-down Switching Regulator with Built-in Power MOSFET | |||
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BD9151MUV
VCC=3.3V,Ta=25â
VOUT2
VOUT1
VOUT3
VCC=3.3V,Ta=25â
VOUT2
VOUT1
VOUT3
Technical Note
VCC=3.3V,Ta=25â
VOUT1
VOUT2
PGATE
Fig.15 Soft start waveform
(Io1=0mA,Io2=0mA,Io3=0mA)
Fig.16 Soft start waveform
(Io1=400mA,Io2=800mA,Io3=600mA)
Fig.17 Soft start waveform
(Io1=0mA,Io2=0mA,PGATE)
VOUT2
VOUT1
RESET
SW1
VOUT1
VCC=3.3V,Ta=25â,VOUT1=1.8V
Fig.18 Soft start waveform
(Io1=0mA,Io2=0mA,RESET)
Fig.19 SW1 waveform
(Io=0mA)
SW1
VOUT1
VCC=3.3V,Ta=25â,VOUT1=1.8V
Fig.20 SW1 waveform
(Io=400mA)
VCC=3.3V,Ta=25â,VOUT=1.8V
SW2
SW2
VOUT1
VOUT2
VCC=3.3V,Ta=25â,VOUT2=1.2V
VOUT2
VCC=3.3V,Ta=25â,VOUT2=1.2V
IOUT1
Fig.21 SW2 waveform
(Io=0mA)
Fig.22 SW2 waveform
(Io=800mA)
Fig.23 VOUT1 transient response
(Io=200mAâ400mA / 10usec)
VOUT1
VCC=5V,Ta=25â,VOUT=1.8V
IOUT1
VOUT2
VCC=5V,Ta=25â,VOUT2=1.2V
IOUT2
VOUT2
VCC=5V,Ta=25â,VOUT2=1.2V
IOUT2
Fig.24 VOUT1 transient response
(Io=400mAâ200mA/ 10usec)
Fig.25 VOUT2 transient response
(Io=400mAâ800mA/ 10usec)
Fig.26 VOUT2 transient response
(Io=800mAâ400mA/ 10usec)
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5/16
2009.08 - Rev.A
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