LTC2901-2IGN データシートの表示（PDF） - Linear Technology
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LTC2901-2IGN
Linear Technology
LTC2901-2IGN Datasheet PDF : 16 Pages
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TYPICAL APPLICATIO S
Quad Supply Monitor with Watchdog Timer Disabled
5V, 3V, 1.8V, 12V (ADJ)
1.8V
5V
SYSTEM
RESET
CRT
1
16
COMP3 COMP2
2
15
COMP1 COMP4
3
V3
14
V2
4 V1 LTC2901 V4 13
5 CRT
6 RST
7
WDO
12
VREF
11
VPG
10
GND
8
WDI
9
CWT
R3
3V
2.15M
1%
R4
100k
1%
12V
VTRIP = 11.25V
2901 TA02
LTC2901
5V, –5V Monitor with Watchdog Timer Disabled and Unused
V2, V3 Inputs Pulled Above Trip Thresholds
5V
SYSTEM
RESET
CRT
1
16
COMP3 COMP2
2 COMP1 COMP4 15
3 V3
V2 14
4 V1 LTC2901 V4 13
5
CRT
6
RST
7
WDO
VREF 12
11
VPG
10
GND
8
WDI
9
CWT
R3
464k
1%
–5V
R1 R4
16.2k 121k
1% 1%
VTRIP = –4.64V
R2
86.6k
1%
2901 TA03
Quad Supply Monitor with LED Undervoltage Indicators
5V, 3.3V, 2.5V, 1.5V
RL1
1k
LED
2.5V
5V
SYSTEM RESET
WATCHDOG STATUS
WDI
CRT
RL3
1k
LED
RL2
1k
LED
1
16
COMP3 COMP2
2 COMP1 COMP4 15
3 V3
V2 14
4 V1 LTC2901 V4 13
5
CRT
6
RST
7
WDO
VREF 12
11
VPG
10
GND
8
WDI
9
CWT
CWT
RL4
1k
LED
3.3V
1.5V
R1
53.6k
1%
R2
47.5k
1%
2901 TA04
Generate RESET Pulse Through Watchdog Timeout (LTC2901-1/LTC2901-2)
ADJ
5V
10k
RST
WDI
CRT
1
16
COMP3 COMP2
2
15
COMP1 COMP4
3
V3
14
V2
4 V1 LTC2901 V4 13
5 CRT
6 RST
7
WDO
12
VREF
11
VPG
10
GND
8
WDI
9
CWT
3.3V
CWT
RST
WDO
WDI
tRST
~20µs
tWD
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
Downloaded from: http://www.datasheetcatalog.com/
2901 TA06
2901fb
15
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