LTC2902 Просмотр технического описания (PDF) - Linear Technology
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производитель
LTC2902
Linear Technology
LTC2902 Datasheet PDF : 16 Pages
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LTC2902
TYPICAL PERFOR A CE CHARACTERISTICS
IV4 vs Temperature
1.0
V1 = 5V
0.9 V2 = 3.3V
0.8
V3 = 2.5V
V4 = 1.8V
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
– 60 –40 – 20 0 20 40 60 80 100
TEMPERATURE (°C)
2902 G13
RST Output Voltage
vs V1, VPG = 0V
5
V1 = V2 = V3 = V4
10k PULL-UP FROM RST TO V1
4 TA = 25°C
3
2
1
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
V1 (V)
2902 G15
RST, COMPX ISINK
vs Supply Voltage
10
TA = 25°C
9
8
VOL = 0.4V
7
6
5
4
3
VOL = 0.2V
2
1
0
0
1
2
3
4
5
6
V1 OR V2 (V)
2902 G18
6
Typical Transient Duration
vs Comparator Overdrive (V1, V2)
450
TA = 25°C
400
350
RESET OCCURS
300
ABOVE CURVE
250
200
150
100
50
0
0.1
1
10
100
RESET COMPARATOR OVERDRIVE VOLTAGE (% OF VRTX)
2902 G14
Typical Transient Duration
vs Comparator Overdrive (V3, V4)
220
TA = 25°C
200
180
RESET OCCURS
160
ABOVE CURVE
140
120
100
80
60
40
20
0
0.1
1
10
100
RESET COMPARATOR OVERDRIVE VOLTAGE (% OF VRTX)
2902 G25
Reset Time-Out Period
vs Temperature
8.9
CRT = 1500pF
8.4 (SILVER MICA)
7.9
7.4
6.9
6.4
5.9
5.4
4.9
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
2902 G16
RST, COMPX Voltage Output Low
vs Output Sink Current
3.0
V2 = 3V
V1 = 5V
2.5
85°C
25°C
– 40°C
2.0
1.5
1.0
0.5
0
0 10 20 30 40 50 60 70 80 90
ISINK (mA)
2902 G19
Reset Time-Out Period
vs Capacitance
10 TA = 25°C
1
100m
10m
1m
100µ
10p
100p
1n 10n
CRT (FARAD)
100n 1µ
2902 G17
RST High Level Output Voltage
vs Output Source Current
(LTC2902-2)
3.5
V1 = 5V
V2 = 3V
3.0
V3 = 2.5V
V4 = 1V
2.5
2.0
– 40°C
1.5
25°C
1.0
85°C
0.5
0
0
0.5
1
1.5
2
2.5
ISOURCE (mA)
2902 G20
2902f
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