LTC1726 LINER [Linear Technology], LTC1726 Datasheet - Page 12

• Manufacturer Part Number: LTC1726
• Description: Triple Supply Monitor and uP Supervisor with Adjustable Reset and Watchdog Timer
• Manufacturer: LINER [Linear Technology]

RELATED PARTS
TYPICAL APPLICATIO
LTC1726
PART NUMBER
LTC690
LTC694-3.3
LTC699
LTC1232
LTC1326
LTC1326-2.5
LTC1536
LTC1727-5
LTC1727-2.5
LTC1728-5
LTC1728-2.5
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
DESCRIPTION
5V Supply Monitor, Watchdog Timer and Battery Backup
3.3V Supply Monitor, Watchdog Timer and Battery Backup
5V Supply Monitor and Watchdog Timer
5V Supply Monitor, Watchdog Timer and Push-Button Reset
Micropower Precision Triple Supply Monitor for 5V, 3.3V and ADJ
Micropower Precision Triple Supply Monitor for 2.5V, 3.3V and ADJ
Precision Triple Supply Monitor for PCI Applications
Micropower Triple Supply Monitor with Individual Outputs
Micropower Triple Supply Monitor with Individual Outputs
Micropower Triple Supply Monitor in 5-Pin SOT-23 Package
Micropower Triple Supply Monitor in 5-Pin SOT-23 Package
(NORMALLY OPEN)
RESET BUTTON
MANUAL
Triple Supply Monitor with Watchdog Timer and Manual Reset Button
*OPTIONAL RESISTOR RECOMMENDED
TO EXTEND ESD TOLERANCE
U
10k
5%
R3*
V
12V ( 5%)
TRIP
( 0.17V)
= 11.2V
R1
1.07M
0.1%
R2
105k
0.1%
5V
100nF
3.3V
100nF
V
R1 = R2
1
2
3
4
TRIP
V
V
V
GND
CC3
CC5
CCA
=
LTC1726-5
V
R2
CCA
V
V
TRIP
CCA
(R1 + R2)
COMMENTS
4.65V Threshold
2.9V Threshold
4.65V Threshold
4.37V/4.62V Threshold
4.725V, 3.118V, 1V Thresholds ( 0.75%) 5V, 3.3V, ADJ
2.363V, 3.118V, 1V Thresholds ( 0.75%) 2.5V, 3.3V, ADJ
Meets PCI t
4.675V, 3.086V, 1V Thresholds ( 1.5%) 5V, 3.3V, ADJ
2.338V, 3.086V, 1V Thresholds ( 1.5%) 2.5V, 3.3V, ADJ
4.675V, 3.086V, 1V Thresholds ( 1.5%) 5V, 3.3V, ADJ
2.338V, 3.086V, 1V Thresholds ( 1.5%) 2.5V, 3.3V, ADJ
RST
WDI
– 1
WT
RT
8
7
6
5
1500pF
FAIL
1500pF
RESET
I/O
Timing Specifications
P
1726 TA09
LINEAR TECHNOLOGY CORPORATION 2000
1726i LT/TP 0100 4K • PRINTED IN USA