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LTC2901-1IGN Datasheet(PDF) 7 Page - Linear Technology

Part # LTC2901-1IGN
Description  Programmable Quad Supply Monitor with Adjustable Reset and Watchdog Timers
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2901-1IGN Datasheet(HTML) 7 Page - Linear Technology

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7
LTC2901
2901is sn2901
RST, WDO, COMPX Voltage
Output Low vs Output Sink Current
RST High Level Output Voltage
vs Output Source Current
(LTC2901-2)
RST, WDO, COMPX ISINK
vs Supply Voltage
TYPICAL PERFOR A CE CHARACTERISTICS
V1 OR V2 (V)
0
0
2
4
6
1
2
34
2901 G19
5
8
10
1
3
5
7
9
6
VOL = 0.4V
TA = 25°C
VOL = 0.2V
ISINK (mA)
0
20
40
50
90
2901 G20
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
Reset Time-Out Period
vs Capacitance
CRT (FARAD)
10p
100p
10n
1
µ
10
1
100m
10m
1m
100
µ
2901 G18
1n
100n
TA = 25°C
ISOURCE (mA)
0
0.5
2
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2901 G21
2.5
1.5
1
85
°C
25
°C
–40
°C
V1 = 5V
V2 = 3V
V3 = 2.5V
V4 = 1V
Watchdog Time-Out Period
vs Capacitance
CWT (FARAD)
10p
100p
10n
1
µ
100
10
1
100m
10m
1m
2901 G17
1n
100n
TA = 25°C
V2 (V)
1
0
2
6
8
10
20
14
2
3
3.5
2901 G24
4
16
18
12
1.5
2.5
4
4.5
5
TA = 25°C
COMPX and WDO Pull-Up
Current vs V2 (COMPX and
WDO Held at 0V)
COMPX Propagation Delay vs Input
Overdrive Above Threshold
INPUT OVERDRIVE ABOVE THRESHOLD (mV)
250
200
V1, V2
V3, V4
150
2901 G25
0
100
50
1000
10
100
TA = 25°C
RST Pull-Up Current vs V2
(LTC2901-1)
RST Pull-Up Current vs V2
(LTC2901-2)
V2 (V)
2
0
4
8
12
2.5
3
3.5
4
2901 G26
4.5
16
20
2
6
10
14
18
5
TA = 25°C
VRT25
VRT30
VRT33
V2 (V)
2
0
2
4
5
2.5
3
3.5
4
2901 G27
4.5
1
3
6
5
TA = 25°C
VRT25
VRT30
VRT33



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