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BD46421 Datasheet(PDF) 4 Page - Rohm

Part # BD46421
Description  Counter Timer Built-in CMOS Voltage Detector IC
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD46421 Datasheet(HTML) 4 Page - Rohm

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Technical Note
4/9
BD45
□□□G, BD46□□□G series
www.rohm.com
2009.05 - Rev.C
© 2009 ROHM Co., Ltd. All rights reserved.
 Reference Data (Unless specified otherwise, Ta=25°C)
Fig.3 Circuit Current
0.0
0.5
1.0
1.5
2.0
01
2
3
45
6
78
9 10
VDD SUPPLY VOLTAGE
:VDD[V]
【BD45281G】
0
5
10
15
20
0.0
0.5
1.0
1.5
2.0
2.5
DRAIN-SOURCE VOLTAGE
: VDS[V]
VDD=1.2V
【BD45281G】
VDD=2.4V
Fig.4 “Low” Output Current
0
5
10
15
20
01
2
3
45
6
DRAIN-SOURCE VOLTAGE
: VDS[V]
【BD46281G】
VDD=6.0V
VDD=4.8V
Fig.5 “High” Output Current
Fig.6 I/O Characteristics
0
1
2
3
4
5
6
7
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
VDD SUPPLY VOLTAGE
:VDD[V]
【BD45421G】
Ta=25℃
Ta=25℃
0
5
10
15
20
01234
56789
10
ER VOLTAGE
: VER[V]
【BD46281G】
Fig.7 ER Terminal Threshold Voltage
Fig.10 Circuit Current when ON
(VDET-0.2V)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
-40
-20
0
20
40
60
80
100
TEMPERATURE
: Ta[℃]
【BD45421G】
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
-40
-20
0
20
40
60
80
100
TEMPERATURE
: Ta[℃]
【BD45421G】
Fig.11 Circuit Current when OFF
Fig.8 ER Terminal Input Current
0
5
10
15
20
012345
6789
10
ER VOLTAGE
: VER[V]
【BD45421G】
0.0
0.5
1.0
1.5
-40
-20
0
20
40
60
80
100
TEMPERATURE
: Ta[℃]
【BD45421G】
Fig.12 Operating Limit Voltage
Fig.9 Detection Voltage
Release Voltage
3.0
3.4
3.8
4.2
4.6
5.0
5.4
5.8
-40
0
40
80
TEMPERATURE
: Ta[℃]
Low to high(VDET+
ΔVDET)
High to low(VDET)
【BD45421G】
Fig.13 Output Delay Time
“Low”
”High”
0
50
100
150
200
250
-60 -40 -20
0
20
40
60
80 100 120
TEMPERATURE
: Ta[℃]
【BD4528□G】
BD45282G
BD45281G
BD45285G
0
10
20
30
40
50
-60 -40 -20
0
20
40
60
80 100 120
TEMPERATURE
: Ta[℃]
【BD45281G tPHL
Fig.14 Output Delay Time
“High”
”Low”


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