MAX690A(1993) 查看數據表（PDF） - Maxim Integrated
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MAX690A Datasheet PDF : 12 Pages
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Microprocessor Supervisory Circuits
__________________________________________Typical Operating Characteristics
OUTPUT VOLTAGE
vs. LOAD CURRENT
5.00
VCC = +5V
4.95
VBATT = +2.8V
TA = +25°C
4.90
4.85
SLOPE = 5Ω
4.80
4.75
0
10
20
30
40
50
IOUT (mA)
OUTPUT VOLTAGE
vs. LOAD CURRENT
2.80
VCC = 0V
2.78
VBATT = +2.8V
TA = +25°C
2.76
2.74
SLOPE = 80Ω
2.72
2.70
0
0.2 0.4 0.6 0.8 1.0
IOUT (mA)
VCC
0V
RESET
0V
MAX690A
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
+5V
VBATT = OV
TA = +25°C
+5V
VCC VCC
2k
RESET
GND
RESET
330pF
500ms/div
MAX690A
RESET RESPONSE TIME
POWER-FAIL COMPARATOR
RESPONSE TIME
+5V
VCC
+5V
VCC
RESET
VCC
RESET
GND
+4V
TA = +25°C
10k
RESET
30pF
0V
+5V
PFO
+1.30V
PFI
+5V
PFI
PFO 1k
30pF
+1.25V
VCC = +5V
TA = +25°C
2µs/div
400ns/div
POWER-FAIL COMPARATOR
RESPONSE TIME
PFI
+5V
PFO
VCC = +5V
TA = +25°C
PFO
30pF
+1.25V
1k
+3V
+0V
0V
+1.2V
PFI
+1.20V
400ns/div
+1.3V
MAX805L
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
+5V
MAX805L
RESET RESPONSE TIME
VCC
+5V
VCC
+4V
VCC
RESET
0V
VCC
VBATT
+5V
0V
GND
330pF
10k
RESET
GND
330
pF
+4V
RESET
0V
500ms/div
0V
2µs/div
4 _______________________________________________________________________________________
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