MB3793 Datasheet, PDF (15/20 Pages) Fujitsu Component Limited. – POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER

MB3793-42/30
s REFERENCE CHARACTERISTIC CURVES (FOR MB3793-42)
Power Current - Power Voltage
40
Watchdog timer monitoring (VINH = 0 V)
35
30
25
20
Reset (VCC < VSH)
15
Watchdog timer stopping (VINH = VCC)
Inhibited
10
f = 1 kHz
Duty ≈ 10%
VL = 0 V
VH = V_CC
MB3793-42
VINH VCC
CTW
0.01 µF
CTP
0.1 µF
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10
Power voltage: VCC (V)
Detection Voltage - Ambient Temperature
4.5
Ta = -40 to +85°C
VSH (Ta = +25°C)
4.4
MAX
MAX
4.3
TYP
VSH
TYP
4.2
MIN
VSL
MIN
4.1
VSL (Ta = +25°C)
Ta = -40 to +85°C
4.0
-40 -20 0 20 40 60 80 100
Ambient temperature: Ta (°C)
Reset Output Voltage - Reset Output Current
(P-MOS side)
Reset Output Voltage - Reset Output Current
(N-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
4.3
Ta
VRESET RON IRESET
-40°C 4.800 V 40 Ω
4.2
+25°C 4.750 V 50 Ω
-5 mA
4.1
+85°C 4.707 V 58.6 Ω
4.0
0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
Reset output current: IRESET (mA)
500
Ta
VRESET RON IRESET
-40°C 98 mV 19.6 Ω
+25°C 135 mV 27 Ω
5 mA
400
+85°C 167 mV 33.4 Ω
Ta = +25°C
300
Ta = +85°C
200
100
Ta = -40°C
0
01
2345678
Reset output current: IRESET (mA)
9 10
15