LTC1726 LINER [Linear Technology], LTC1726 Datasheet - Page 9

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

TYPICAL APPLICATIO S
ADJUSTABLE SUPPLY
OR DC/DC FEEDBACK
ADJUSTABLE
DIVIDER
SUPPLY
U
Dual Supply Monitor (3.3V and 5V, Defeat V
Triple Supply Monitor (3.3V, 5V and Adjustable)
*TO PRESERVE THRESHOLD ACCURACY, SET PARALLEL
THE WATCHDOG TIMER CAN BE DISABLED BY CONNECTING
THE WDI AND WT PINS TO GROUND. THE PART WILL ACT
STRICTLY AS A TRIPLE SUPPLY MONITOR WITH AN
ADJUSTABLE RESET TIME-OUT PERIOD
R1*
COMBINATION OF R1 AND R2 66.5k
R1*
*TO PRESERVE THRESHOLD ACCURACY, SET PARALLEL
COMBINATION OF R1 AND R2
3.3V
5V
3.3V
5V/2.5V
Disabling the Watchdog Timer
5V
R2*
R2*
3.3V
1
2
3
4
1
2
3
4
1
2
3
4
V
V
V
GND
LTC1726-5/2.5
V
V
V
V
GND
V
V
V
GND
CC3
CC5
CCA
CC3
CC5
CC25
CCA
CC3
CC5
CCA
LTC1726-5
LTC1726-5
/
RST
WDI
WDI
WDI
RST
RST
WT
WT
WT
RT
RT
RT
66.5k
8
7
6
5
8
7
6
5
8
7
6
5
C
SYSTEM
RESET
C
SYSTEM RESET
WDI
SYSTEM RESET
WDI
C
1726 TA03
RT
RT
RT
CCA
C
C
WT
WT
1726 TA05
1726 TA04
Input)
LTC1726
9