LTC2903 LINER [Linear Technology], LTC2903 Datasheet - Page 8

• Manufacturer Part Number: LTC2903
• Description: Low Voltage Supervisorwith 27 Selectable Thresholds and Watchdog Timer
• Manufacturer: LINER [Linear Technology]

LTC2917/LTC2918
BLOCK DIAGRAM
TIMING DIAGRAM
8
VM
+
–
WDI
WDI
RST
RST
SEL1
3 STATE
DECODE
0.5V
REFERENCE
SEL2
MONITOR
DIVIDER
MATRIX
DIVIDER
MATRIX
t < t
LTC2917
TOL
WDL
Watchdog Timing (LTC2917-A, LTC2918-A)
Watchdog Timing (LTC2917-B, LTC2918-B)
RST
VM
–
+
t
RST
V
MTx
1V
Monitor Input Timing
MR
LTC2918
t > t
t
UV
V
CC
WDL
100k
200ms TIMER
RESET TIMER
ADJUSTABLE
ADJUSTABLE
1.6 SECOND
WATCHDOG
INTERNAL
INTERNAL
t
TIMER
TIMER
RST
RT
WT
t
t
WDU
WDU
V
V
CC
29178 TD01
CC
DETECT
DETECT
DRIVER LOGIC
WATCHDOG
RESET
LOGIC
WDI
t
t
RST
RST
V
CC
29178 TD01
29178 TD03
GND
RST
V
6.2V
29178 BD
CC
29178f