CAT8836 Datasheet, PDF (5/7 Pages) ON Semiconductor – NanoPower Supervisory Circuit

CAT8836
TYPICAL CHARACTERISTICS
240
220
200
180
160
140
90°C
25°C
120
−40°C
100
1.5
2.5
3.5
4.5
5.5
V_CC (V)
Figure 4. Supply Current vs. Supply Voltage
1.0005
1.0000
0.9995
0.9990
0.9985
0.9980
0.9975
0.9970
0.9965
−40
25
90
TEMPERATURE (°C)
Figure 5. Normalized Reset Threshold Voltage
vs. Temperature
10.0
9.8
9.6
9.4
9.2
9.0
8.8
8.6
8.4
90°C
25°C
8.2
−40°C
8.0
1.5
2.5
3.5
4.5
5.5
V_CC (V)
Figure 6. Reset Time Out vs. V_CC (CT = 0 V)
200
195
190
185
180
175
170
90°C
25°C
165
−40°C
160
1.5
2.5
3.5
4.5
5.5
V_CC (V)
Figure 7. Reset Time Out vs. V_CC (CT = 5 V)
Detailed Description
The supervisory circuit monitors V_DD and keeps the
RESET output active as long as V_DD remains below the
threshold voltage of V_TH. An internal timer delays the return
of the output to the inactive state (high) to ensure proper
system reset. The delay time starts after V_DD has risen above
the threshold.
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