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BD19910MUV Datasheet(PDF) 2 Page - Rohm |
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BD19910MUV Datasheet(HTML) 2 Page - Rohm |
2 / 5 page 2/4 REV. A ○Electrical characteristics (PVCC1=PVCC2=AVCC=5.0V,Ta=25℃ unless otherwise specified) Parameter Symbol MIN. TYP. MAX. UNIT Condition [TOTAL] Current consumption ICC - 3.6 7.2 mA VDCO1=VDCO2=5V, FB3=0V, CSWON=ENUP=5V, XENDWN=0V Shutdown current ISHUT - 1.2 3.0 mA ENUP=0V, XENDWN=5V [Input IO Block : ENUP, XENDWN, SELDCO1, SELSQ, SELRST, CSWON] High level input voltage VIOH 2.0 - - V Low level input voltage VIOL - - 0.8 V input current H IIO1 -5.0 - 5.0 μA Input=5V input current L IIO2 -5.0 - 5.0 μA Input=0V [Step-down DC-to-DC Converter Block] VDCO1 voltage VDCO1A 1.455 1.500 1.545 V SELDCO1=0V VDCO1B 0.970 1.000 1.030 V SELDCO1=5V VDCO2 voltage VDCO2 3.201 3.300 3.399 V Oscillation frequency fOSCDWN 1.4 2.0 2.6 MHz High-side-switch resistance RONH1,2 - 0.40 0.60 Ω Low-side-switch resistance RONL1,2 - 0.30 0.50 Ω Soft start time tSOFTDWN 0.6 1.0 1.8 ms No load [Step-up DC-to-DC Converter Block] FB(VREF) voltage VFB3 0.582 0.600 0.618 V Oscillation frequency fOSCUP 0.7 1.0 1.3 MHz High-side-switch resistance RONH3 - 0.35 0.60 Ω VDCO3=10V Low-side-switch resistance RONL3 - 0.30 0.50 Ω VDCO3=10V Soft-start beginning time tSOFTUP 3.5 6.0 8.5 ms FB3=0V AMPOUT3 maximum voltage VAMPOH 2.2 2.5 2.8 V FB3=0V AMPOUT3 minimum voltage VAMPOL - 0.03 0.20 V FB3=2.5V Max Duty cycle DMAX 72 80 88 % FB3=0V [Reset Block] Reset ON voltage VRSTON1A 3.600 3.700 3.800 V AVCC is observed, SELRST=0V VRSTON1B 4.087 4.200 4.313 V AVCC is observed, SELRST=5V VRSTON2A 1.140 1.200 1.260 V VDCO1 is observed, SELDCO1=0V VRSTON2B 0.665 0.700 0.735 V VDCO1 is observed, SELDCO1=5V VRSTON3 2.565 2.700 2.835 V VDCO2 is observed Reset hysteresis voltage VRSTHYS1A 70 100 130 mV AVCC is observed, SELRST=0V VRSTHYS1B 70 100 130 mV AVCC is observed, SELRST=5V VRSTHYS2A 70 100 130 mV VDCO1 is observed, SELDCO1=0V VRSTHYS2B 70 100 130 mV VDCO1 is observed, SELDCO1=5V VRSTHYS3 70 100 130 mV VDCO2 is observed XRESET output sink voltage VRSINK - - 0.3 V ISINK=5.0mA XRESET leak current IRLK -5.0 - 5.0 μA XRESET=5.0V Reset delay time tRST 30 50 70 ms [Current Switch Block] Current SW ON resistance RCSWO - 0.5 1.0 Ω CSWON=5V |
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