BD3508MUV,BD3509MUV
●Reference Data
BD3508MUV
Vo
50mV/div
45mV
Vo
50mV/div
Io
3.0A
2A/div
Io
2A/div
64mV
3.0A
Technical Note
Vo
100mV/div
Io
2A/div
91mV
3A
Io=0A→3A/3µsec
t(5µsec/div)
Fig.1 Transient Response
(0→3A)
Co=150µF×2, CFB=0.01uF
Io=0A→3A/3µsec
t(5µsec/div)
Fig.2 Transient Response
(0→3A)
Co=150µF
Vo
50mV/div
55mV
Vo
50mV/div
79mV
Io
3.0A
2A/div
Io
2A/div 3.0A
Io=0A→3A/3µsec t(5µsec/div)
Fig.3 Transient Response
(0→3A)
Co=47µF, CFB=0.01uF
Vo
100mV/div
87mV
Io
2A/div
3A
Io=3A→0A/3µsec
t(5µsec/div)
Fig.4 Transient Response
(3→0A)
Co=150µF×2
Io=3A→0A/3µsec t(5µsec/div)
Fig.5 Transient Response
(3→0A)
Co=150µF
Ven
2V/div
Ven
2V/div
VNRCS
2V/div
Vo
1V/div
t(200µsec/div)
Fig.7: Waveform at output start
VNRCS
2V/div
Vo
1V/div
t(2msec/div)
Fig.8 Waveform at output OFF
Io=3A→0A/3µsec t(5µsec/div)
Fig.6 Transient Response
(3→0A)
Co=47µF
VCC
Ven
VIN
Vo
VCC→VIN→Ven
Fig.9 Input sequence
VCC
Ven
VIN
Vo
VIN→VCC→Ven
Fig.10 Input sequence
VCC
Ven
VIN
Vo
Ven→VCC→VIN
Fig.11 Input sequence
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VCC
Ven
VIN
Vo
VCC→Ven→VIN
Fig.12 Input sequence
2010.04 - Rev.C