BD2221G 查看數據表（PDF） - ROHM Semiconductor
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BD2221G Datasheet PDF : 13 Pages
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BD2220G, BD2221G
●Waveform Data (BD2220G)
VEN
(5V/div.)
V/OC
(5V/div.)
VOUT
(5V/div.)
IOUT
(0.5A/div.)
VIN=5V
RL=20Ω
TIME(1ms/div.)
Fig.28 Output rise characteristic
VEN
(5V/div.)
V/OC
(5V/div.)
VOUT
(5V/div.)
IOUT
(0.5A/div.)
VIN=5V
RL=20Ω
TIME(2us/div.)
Fig.29 Output fall characteristic
Technical Note
VEN
(5V/div.)
V/OC
(5V/div.)
CL=220uF
CL=100uF
IOUT
(0.2A/div.)
CL=47uF
VIN=5V
RL=20Ω
TIME (1ms/div.)
Fig.30 Inrush current response
V/OC
(5V/div.)
VOUT
(5V/div.)
IOUT
(0.5A/div.)
VIN=5V
1A/10ms
TIME (2ms/div.)
Fig.31 Over-current response
ramped load
V/OC
(5V/div.)
VOUT
(5V/div.)
IOUT
(0.5A/div.)
VIN=5V
1A/50ms
TIME (10ms/div.)
Fig.32 Over-current response
ramped load
VEN
(5V/div.)
V/OC
(5V/div.)
VOUT
(5V/div.)
IOUT
(0.5A/div.)
VIN=5V
TIME (5ms/div.)
Fig.33 Over-current response
enable to short-circuit
V/OC
(5V/div.)
VOUT
(5V/div.)
VIN
(5V/div.)
VOUT
(5V/div.)
IOUT
(1A/div.)
VIN=5V
RL=1Ω
TIME (5ms/div.)
Fig.34 Over-current response
1Ω load connected at EN
IOUT
(0.2A/div.)
RL=20Ω
TIME (10ms/div.)
Fig.35 UVLO response
increasing VIN
VIN
(5V/div.)
VOUT
(5V/div.)
IOUT
(0.2A/div.)
RL=20Ω
TIME (10ms/div.)
Fig.36 UVLO response
decreasing VIN
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6/12
2011.05 - Rev.B
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