MB3793-37A Datasheet, PDF (13/21 Pages) Fujitsu Component Limited. – Power Voltage Monitoring IC with Watchdog Timer

s TYPICAL CHARACTERISTICS
Power supply current-Power supply voltage
40
35
30
25
Watchdog timer monitoring
(VINH = 0 V)
20
15
10
f = 1 kHz
Duty = 10%
VL = 0 V
VH = VCC
MB3793-37A
VINH VCC
CTW
CTP
0.01 µF 0.1 µF
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10
Power supply voltage: VCC (V)
Reset output voltage-Reset output current
(P-MOS side)
5.0
Ta = −40°C
4.9
Ta = +25°C
4.8
4.7
4.6
4.5
Ta = +85°C
4.4
Ta
VRESET
RON IRESET
4.3
−40°C 4.800 V 40 Ω
4.2
+25°C 4.750 V 50 Ω −5 mA
+85°C 4.707 V 58.6 Ω
4.1
4.0
0 −1 −2 −3 −4 −5 −6 −7 −8 −9 −10
Reset output current: IRESET (mA)
MB3793-37A
Detection voltage-Ambient temperature
4.0
Ta = −40°C to +85°C
VSH (Ta = +25°C)
3.9
MAX
MAX
3.8
TYP
TYP
3.7
MIN
VSH
VSL
MIN
3.6
VSL (Ta = +25°C)
(Ta = −40°C to +85°C)
3.5
−40 −20 0 20 40 60 80 100
Ambient temperature: Ta (°C)
Reset output voltage-Reset output current
(N-MOS side)
Ta
VRESET
RON IRESET
500
−40°C 98 mV 19.6 Ω
+25°C 135 mV 27 Ω +5 mA
+85°C 167 mV 33.4 Ω
400
Ta = +25°C
300
Ta = +85°C
200
100
Ta = −40°C
0
0 1 2 3 4 5 6 7 8 9 10
Reset output current: IRESET (mA)
(Continued)
13