Datasheet

5
LTC1536
1536fa
TYPICAL PERFORMANCE CHARACTERISTICS
UW
V
CC3
Typical Transient Duration
vs Reset Comparator Overdrive
V
CCA
Typical Transient Duration
vs Reset Comparator Overdrive
V
CC3
RESET COMPARATOR OVERDRIVE, V
RT3
– V
CC3
(V)
0.001
20
TYPICAL TRANSIENT DURATION (µs)
30
40
45
50
0.01 0.1 1
1536 G10
10
0
25
35
15
5
RESET OCCURS
ABOVE CURVE
V
CCA
RESET COMPARATOR OVERDRIVE, V
RTA
– V
CCA
(V)
0.001
20
TYPICAL TRANSIENT DURATION (µs)
30
40
0.01 0.1 1
1536 G12
10
0
25
35
15
5
RESET OCCURS
ABOVE CURVE
V
CC5
Typical Transient Duration
vs Reset Comparator Overdrive
V
CC5
RESET COMPARATOR OVERDRIVE, V
RT5
– V
CC5
(V)
0.001
20
TYPICAL TRANSIENT DURATION (µs)
30
40
45
0.01 0.1 1
1536 G11
10
0
25
35
15
5
RESET OCCURS
ABOVE CURVE
RST Output Voltage
vs Supply Voltage
SUPPLY VOLTAGE, V
CC
(V)
0
RST OUTPUT VOLTAGE (V)
3.0
4.0
5.0
4.0
1536 G13
2.0
1.0
2.5
3.5
4.5
1.5
0.5
0
1.0
2.0
3.0
0.5 4.5
1.5
2.5
3.5
5.0
V
CC5
= V
CC3
= V
CCA
4.7k PULL-UP FROM RST TO V
CC5
T
A
= 25°C
Undervoltage Response Time
vs Temperature
TIME (1µs/DIV)
VOLTAGE (500mV/DIV)
1536 G15
V
CC3
85° –40°
RST
MARGIN
DEVICE THRESHOLD
PCI SPEC
25°
t
FAIL
SPEC
V
CC3
FALLING
FROM 3.3V TO
2.3V AT (–0.1V/µs)
RST Output Voltage
vs Supply Voltage
SUPPLY VOLTAGE, V
CC
(V)
0
RST OUTPUT VOLTAGE (V)
3.0
4.0
5.0
4.0
1536 G16
2.0
1.0
2.5
3.5
4.5
1.5
0.5
0
1.0
2.0
3.0
0.5 4.5
1.5
2.5
3.5
5.0
V
CC5
= V
CC3
= V
CCA
RST PIN LOADED WITH
10MΩ TO GND
T
A
= 25°C
Power-Fail Response Time
vs Temperature
TIME (20ns/DIV)
VOLTAGE (1V/DIV)
1536 G14
V
CC5
RST
85°
–40°
25°