MB3793-42 Datasheet, PDF (14/25 Pages) Fujitsu Component Limited. – POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER

MB3793-42
■ TYPICAL CHARACTERISTICS
Power Current - Power Voltage
40
35 ^{Watchdog timer monitoring}
(VINH = 0 V)
30
25
20
Reset
15
(VCC < VSH)
10
Watchdog timer stopping
(VINH = VCC)
Inhibited
f = 1 kHz
Duty = 10%
VL = 0 V
VH = VCC
MB3793-42
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 voltage VCC (V)
Detection Voltage - Operating ambient Temperature
4.5
4.4
VSH
4.3
VSL
4.2
4.1
4.0
−40 −20 0 +20 +40 +60 +80 +100
Operating 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
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 I RESET (mA)
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 I RESET(mA)
(Continued)
14