BD37A19FVM_10 ROHM [Rohm], BD37A19FVM_10 Datasheet - Page 4

• Manufacturer Part Number: BD37A19FVM_10
• Description: Voltage Detector ICs with Watchdog Timer
• Manufacturer: ROHM [Rohm]

●Reference data (Unless otherwise specified, Ta = 25℃) : 4.1V Detection
© 2010 ROHM Co., Ltd. All rights reserved.
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Fig.4
10000
1000
-0.5
100
Fig.10 CT Pin Circuit Resistance
1.5
0.5
0.1
12
10
10
-1
13
12
11
10
8
6
4
2
0
2
1
0
1
0.001
Fig.7
9
8
-40
0
0
Fig.1
Moniter Time
AMBIENT TEMPERATURE: Ta [ ℃ ]
CTW Charge Discharge Current
CTW PIN CAPACITY: CTW [V]
SUPPLY VOLTAGE: VDD [V]
CTW PIN VOLTAGE: VCTW [V]
2
1
vs Temperature
0.01
WDT Time vs Capacitance
0
Detection Voltage
4
2
0.1
40
Reset Time
6
3
1
8
4
80
10
10
5
4.75
4.25
3.75
Fig.11
1.5
0.5
4.5
3.5
10
10
2
1
0
5
4
9
8
7
6
5
8
6
4
2
0
-40
-40
Fig.2
Fig.8
0
0
Fig.5
AMBIENT TEMPERATURE: Ta [ ℃ ]
AMBIENT TEMPERATURE: Ta [ ℃ ]
RESET VOLTAGE: VRESET [V]
RESET Transmission Delay
Time vs Temperature
2
SUPPLY VOLTAGE: VDD [V]
2
Ta=105 ℃
Total Supply Current
Detection Voltage
vs Temperature
0
0
Output Current
Ta=-40 ℃
4/10
4
4
40
Ta=25 ℃
Ta=-40 ℃
40
Ta=105 ℃
L → H
H → L
6
6
Ta=25 ℃
8
8
80
80
10
10
10000
1000
1400
1200
1000
100
0.75
0.25
Fig.9
800
600
400
200
Fig.12 WDT Time vs Temperature
10
0.5
15
12
0.0001
1
9
6
3
0
0
1
0
Fig.3
Fig.6 RESET Transmission
-40
-40
0
AMBIENT TEMPERATURE: Ta [ ℃ ]
AMBIENT TEMPERATURE: Ta [ ℃ ]
CT PIN CAPACITY: CT [µF]
Operating Marginal Voltage
vs Temperature
SUPPLY VOLTAGE: VDD [V]
1
Delay Pin Current
vs Power Supply Voltage
Delay Time vs Capacitance
0
0.001
0
2
Technical Note
2010.12 - Rev.A
Reset Time
40
40
Moniter Time
3
0.01
4
80
80
0.1
5