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LTC2938IDE Datasheet(PDF) 5 Page - Linear Technology

Part # LTC2938IDE
Description  Confi gurable 4- and 6-Supply Monitors with Watchdog Timer
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2938IDE Datasheet(HTML) 5 Page - Linear Technology

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LTC2938/LTC2939
5
293839ff
TYPICAL PERFORMANCE CHARACTERISTICS
RST Pull-Up Current vs V2
RST Output Voltage vs V1,
VPG = GND
Watchdog Timeout Period
vs Temperature
Reset Timeout Period
vs Temperature
Watchdog Timeout Period vs CWT
Reset Timeout Period vs CRT
Supply Current vs Temperature
I(V4) vs V4 in –ADJ mode
Transient Duration
vs Comparator Overdrive
TEMPERATURE (°C)
–50
80
85
90
25
75
29389 G04
75
–25
0
50
100
125
70
V1 = 5V
V2 = 3.3V
V3 = 2.5V
V4 = 1.8V
V5 = V6 = 1V
V4 (mV)
29389 G05
–100μ
–10μ
–1μ
–100n
–10n
–1n
–100p
–300
–250
–200
–50
0
–100
–150
125°C
85°C
25°C
RESET COMPARATOR OVERDRIVE (% OF VRTX)
0.1
0
200
300
400
250
350
1
10
100
29389 G06
150
100
50
TA = 25°C
RESET OCCURS
ABOVE CURVE
V2 (V)
1
0
3
6
9
12
18
2
1.5
0.5
2.5
3
3.5
4
29389 G07
4.5
5
15
TA = 25°C
VRT12
VRT18
VRT15
VRT25
VRT33
V1 (V)
0
0
1
2
3
4
5
6
123
4
29389 G08
5
TA = 25°C
10k PULL-UP FROM RST TO V1
V1 = V2
TEMPERATURE (°C)
–50
32
34
36
25
75
29389 G09
30
28
–25
0
50
100
125
26
24
CWT = 1500pF
(SILVER MICA)
TEMPERATURE (°C)
–50
1
2
3
4
5
–25
0
25
50
29389 G10
75
100
125
CRT = 1500pF
(SILVER MICA)
CWT (F)
29389 G11
100
10
1
100m
10m
1m
100μ
10p
100p
1n
100n
1μ
10n
TA = 25°C
CRT (F)
29389 G12
10
1
100m
10m
1m
100μ
10μ
10p
100p
1n
100n
1μ
10n
TA = 25°C



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