Microprocessor Supervisory Circuit
(TA = +25°C, unless otherwise noted.)
BATTERY CURRENT
vs. INPUT SUPPLY VOLTAGE
20
16
12
8
4
0
0
1
2
VBATT = 2.8V,
IOUT = 0A
3
4
5
VCC (V)
Typical Operating Characteristics (continued)
WATCHDOG TIMEOUT
vs. TIMING CAPACITOR
250
200
150
100
50
VCC = +5V
VBATT = 2.8V
0
0 10 20 30 40 50 60 70 80 90 100
TIMING CAPACITOR (nF)
CHIP-ENABLE PROPAGATION DELAY
vs. CE OUT LOAD CAPACITANCE
20
16
12
8
4
0
0
VCC = +5V
CE IN = 0V TO 5V
DRIVER SOURCE
IMPEDANCE = 50Ω
50 100 150 200 250 300
CLOAD (pF)
VCC to VOUT vs.
OUTPUT CURRENT
1000
VBATT to VOUT vs.
OUTPUT CURRENT
1000
100
10
1
1
SLOPE = 0.8Ω
VCC = 4.5V
VBATT = 0V
10
100
1000
IOUT (mA)
100
10
1
1
SLOPE = 8Ω
VCC = 0V
VBATT = 4.5V
10
100
IOUT (mA)
6 _______________________________________________________________________________________