Datasheet

LTC1726
14
1726fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2000
LT 1110 REV C • PRINTED IN USA
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC690 5V Supply Monitor, Watchdog Timer and Battery Backup 4.65V Threshold
LTC694-3.3 3.3V Supply Monitor, Watchdog Timer and Battery Backup 2.9V Threshold
LTC699 5V Supply Monitor and Watchdog Timer 4.65V Threshold
LTC1232 5V Supply Monitor, Watchdog Timer and Push-Button Reset 4.37V/4.62V Threshold
LTC1326 Micropower Precision Triple Supply Monitor for 5V, 3.3V and ADJ 4.725V, 3.118V, 1V Thresholds (±0.75%) 5V, 3.3V, ADJ
LTC1326-2.5 Micropower Precision Triple Supply Monitor for 2.5V, 3.3V and ADJ 2.363V, 3.118V, 1V Thresholds (±0.75%) 2.5V, 3.3V, ADJ
LTC1536 Precision Triple Supply Monitor for PCI Applications Meets PCI t
FAIL
Timing Specifications
LTC1727-5 Micropower Triple Supply Monitor with Individual Outputs 4.675V, 3.086V, 1V Thresholds (±1.5%) 5V, 3.3V, ADJ
LTC1727-2.5 Micropower Triple Supply Monitor with Individual Outputs 2.338V, 3.086V, 1V Thresholds (±1.5%) 2.5V, 3.3V, ADJ
LTC1728-5 Micropower Triple Supply Monitor in 5-Pin SOT-23 Package 4.675V, 3.086V, 1V Thresholds (±1.5%) 5V, 3.3V, ADJ
LTC1728-2.5 Micropower Triple Supply Monitor in 5-Pin SOT-23 Package 2.338V, 3.086V, 1V Thresholds (±1.5%) 2.5V, 3.3V, ADJ
LTC1728-1.8 Micropower Triple Supply Monitor in 5-Pin SOT-23 Package 2.805V, 1.683V, 1V Thresholds (±1.5%) 3V, 1.8V, ADJ
LTC1985-1.8 Micropower Triple Supply Monitor for 3V, 1.8V and ADJ Push-Pull RESET Output, SOT-23
LTC2900 Quad Supply Monitor Adjustable Reset Timer
LTC2901 Quad Supply Monitor with Watchdog Timer Adjustable Watchdog and Reset Timers
LTC2902 Quad Supply Monitor with Selectable Supply Tolerance Reset Disable for Margining Applications
LTC2903 Precision Quad Supply Monitor in SOT-23 Fixed and Adjustable Threshold Combinations
LTC2908 Precision Six Supply Monitor
8-Lead ThinSOT™ and 3mm × 2mm DFN Packages
LTC2910 Octal Positive/Negative Voltage Monitor 8 Low Voltage Adjustable Inputs (0.5V)
Triple Supply Monitor with Watchdog Timer and Manual Reset Button
V
CC3
V
CC5
V
CCA
GND
RT
WT
RST
WDI
LTC1726-5
1726 TA09
100nF
5V 3.3V
12V (±5%)
V
TRIP
= 11.2V
(±0.17V)
47nF
R2
105k
0.1%
*OPTIONAL RESISTOR RECOMMENDED
TO EXTEND ESD TOLERANCE
R3*
10k
5%
MANUAL
RESET BUTTON
(NORMALLY OPEN)
R1
1.07M
0.1%
47nF
100nF
V
TRIP
= (R1 + R2)
R1 = R2
– 1
V
CCA
R2
( )
V
TRIP
V
CCA
µP
RESET
I/O
t
RT
= 155ms
t
WT
= 1s