MC3425 Datasheet, PDF (3/12 Pages) ON Semiconductor – POWER SUPPLY SUPERVISORY/ OVER AND UNDERVOLTAGE PROTECTION CIRCUIT

MC3425
Figure 1. Hysteresis Current versus
Hysteresis Activation Voltage
14
12 TA = 25°C
10
8.0
VCC = 40 V
6.0
VCC
4.0
= 15 V _{VCC = 5.0 V}
2.0
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
VH(act), HYSTERESIS ACTIVATION VOLTAGE (V)
Figure 2. Hysteresis Activation Voltage
versus Temperature
1.2
1.0 ^{VCC = 5.0 V}
VH(act) = Voltage Level at
which Hysteresis Current
(IH) is 90% of full value.
0.8 VCC = 15 V
0.6
VCC = 40 V
0.4
0.2
0
–55
–25
0
25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 3. Hysteresis Current
versus Temperature
15.0
U.V. Sense = 2.5 V
14.0
13.0
12.0
11.0
10.0
–55 –25
0
25
50
75
100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 4. Sense Trip Voltage Change
versus Temperature
0 ^{VSense* = 2.400 V * = 2.500 V}
* = 2.600 V
–10
–20
–30
VCC = 15 V
*VSense at TA = 25°C
–40
–50
–55 –25
0
25
50
75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 5. Output Delay Time versus
Delay Capacitance
100
VCC = 15 V
TA = 25°C
10
1.0
0.1
0.01
0.001
0.0001
tDLY =
2.5 CDLY
200 µA
0.001
0.01
0.1
1.0
10
CDLY, DELAY PIN CAPACITANCE (µF)
Figure 6. Delay Pin Source Current
versus Temperature
260
240
VCC = 40 V
220
VCC = 15 V
200
180
VCC = 5.0 V
160
–55 –25
0
25
50
75 100 125
TA, AMBIENT TEMPERATURE (°C)
MOTOROLA ANALOG IC DEVICE DATA
3