BD87A28FVM-TR Rohm Semiconductor, BD87A28FVM-TR Datasheet - Page 4

• Manufacturer Part Number: BD87A28FVM-TR
• Description: IC, VOLTAGE DETECTION, MSOP8
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Watchdog Circuitr

Specifications of BD87A28FVM-TR

• Threshold Voltage: 2.8V
• No. Of Supervisors / Monitors: 1
• Supply Voltage Range: 1V To 10V
• Reset Type: Active-Low
• Supply Current: 5µA
• Digital Ic Case Style: MSOP
• No. Of Pins: 8
• Operating Temperature: RoHS Compliant
• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: Adjustable/Selectable
• Voltage - Threshold: 2.8V
• Mounting Type: Surface Mount
• Package / Case: 8-VSSOP, 8-MSOP (0.110", 2.80mm Width)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Reference data (Unless otherwise specified, Ta = 25℃) : 4.1V Detection
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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