lt3689-5 Linear Technology Corporation, lt3689-5 Datasheet - Page 11

• Manufacturer Part Number: lt3689-5
• Description: 700ma Step-down Regulator With Power-on Reset And Watchdog Timer
• Manufacturer: Linear Technology Corporation

TIMING DIAGRAMS
WDO
WDO
t
t
t
t
V
UV
RST
WDU
WDL
WDI
WDI
UV
t < t
= TIME REQUIRED TO ASSERT RST LOW ONCE V
= OUTPUT VOLTAGE RESET THRESHOLD
= PROGRAMMED RESET PERIOD
= WATCHDOG WINDOW MODE LOWER BOUNDARY PERIOD
= WATCHDOG UPPER BOUNDARY PERIOD
WDL
V
OUT
WATCHDOG TIMING (W/T = HIGH), TIMEOUT MODE
WATCHDOG TIMING (W/T = LOW), WINDOW MODE
RST
t
UV
POWER-ON RESET TIMING
t
OUT
RST
GOES BELOW V
V
UV
t
RST
UV
t
WDU
t
WDU
LT3689/LT3689-5
t
t
RST
RST
3689 TD
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