BD4728G Rohm, BD4728G Datasheet - Page 4

• Manufacturer Part Number: BD4728G
• Description: RESET IC
• Manufacturer: Rohm

Voltage detectors
Note:
Fig.2 Detection voltage, Detection Hysteresis voltage,
Timing waveform
Measurement circuits
The detection voltage varies because the circuit current causes voltage drop when resistance
exists supply voltage line. Please have attention for using it.
A capacitor should be connected between Vcc and GND when impedance exists on supply voltage
line.
V
CC
Reset Output voltage"L" , Threshold Voltage
Fig.5 Transfer delay time
V
0.22 F
CC
10 F
V
NC
5
1
CC
BD47
V
NC
5
1
CC
BD47
SUB
2
SUB
2
G
GND
V
4
3
OUT
G
GND
V
4
3
OUT
V
V
R
L
CC
OUT
4.7k
V
R
C
V
S
L
L
V
V
4.7k
100pF
V
0V
OH
OL
V
V
CC
S
S
V
Fig.3 Output leak current
CC
V
Fig.1 Timing waveform
CC
TPLH
10 F
10 F
Fig.6 Reset output current "L"
V
NC
5
1
CC
BD47
V
NC
5
1
CC
BD47
SUB
2
SUB
2
G
GND
V
A
4
3
OUT
G
TPHL
GND
V
A
4
3
OUT
I
L
I
OL
I
CC
1/I
Fig.4 Circuit Current ON,Circuit Current OFF
CC
2
TPLH
V
OL
A
0.4V
V
CC
10 F
BD47××G series
V
NC
5
1
CC
BD47
SUB
2
G
GND
V
4
3
OUT
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