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LTC2902 Datasheet(PDF) 6 Page - Linear Integrated Systems

Part No. LTC2902
Description  Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
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Maker  LINEAR [Linear Integrated Systems]
Homepage  http://www.linearsystems.com
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LTC2902 Datasheet(HTML) 6 Page - Linear Integrated Systems

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6
LTC2902
2902f
TYPICAL PERFOR A CE CHARACTERISTICS
Typical Transient Duration
vs Comparator Overdrive (V1, V2)
RST Output Voltage
vs V1, VPG = 0V
Reset Time-Out Period
vs Temperature
Reset Time-Out Period
vs Capacitance
IV4 vs Temperature
RST, COMPX ISINK
vs Supply Voltage
TEMPERATURE (
°C)
–60
0
0.1
0.3
0.4
0.5
1.0
0.7
–20
20
40
2902 G13
0.2
0.8
0.9
0.6
–40
0
60
80
100
V1 = 5V
V2 = 3.3V
V3 = 2.5V
V4 = 1.8V
RESET COMPARATOR OVERDRIVE VOLTAGE (% OF VRTX)
0.1
250
300
350
400
450
1
10
100
2902 G14
200
150
50
0
100
RESET OCCURS
ABOVE CURVE
TA = 25°C
V1 (V)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
2902 G15
5
4
3
2
1
0
V1 = V2 = V3 = V4
10k PULL-UP FROM RST TO V1
TA = 25°C
TEMPERATURE (
°C)
–60
4.9
5.9
6.4
6.9
8.9
7.9
–20
20
40
2902 G16
5.4
8.4
7.4
–40
0
60
80
100
CRT = 1500pF
(SILVER MICA)
CRT (FARAD)
10p
100p
10n
1
µ
10
1
100m
10m
1m
100
µ
2902 G17
1n
100n
TA = 25°C
V1 OR V2 (V)
0
0
2
4
6
1
2
34
2902 G18
5
8
10
1
3
5
7
9
6
VOL = 0.4V
TA = 25°C
VOL = 0.2V
RST, COMPX Voltage Output Low
vs Output Sink Current
RST High Level Output Voltage
vs Output Source Current
(LTC2902-2)
ISINK (mA)
0
20
40
50
90
2902 G19
10
30
60
70
80
3.0
2.5
2.0
1.5
1.0
0.5
0
85
°C
25
°C
–40
°C
V2 = 3V
V1 = 5V
ISOURCE (mA)
0
0.5
2
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2902 G20
2.5
1.5
1
85
°C
25
°C
–40
°C
V1 = 5V
V2 = 3V
V3 = 2.5V
V4 = 1V
RESET COMPARATOR OVERDRIVE VOLTAGE (% OF VRTX)
0.1
80
100
120
140
160
1
10
100
2902 G25
60
40
20
0
200
180
220
TA = 25°C
RESET OCCURS
ABOVE CURVE
Typical Transient Duration
vs Comparator Overdrive (V3, V4)


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