Datasheet LT3689, LT3689-5 (Analog Devices) - 8

LT3689/LT3689-5
TYPICAL PERFORMANCE CHARACTERISTICS Transient Duration vs POR Comparator Overdrive Watchdog Upper Boundary Period Watchdog Lower Boundary Period
800 21 7.0 CWDT = 1nF CWDT = 10nF 700 MURATA: MURATA: (ms) GRM1882C1H102FA01 (ms) GRM1885C1H102FA01 600 6.5 t WDU 20 t WDL TION (µs) 500 RESET OCCURS 400 ABOVE THE CURVE Y PERIOD, 19 Y PERIOD, 6.0 300 TRANSIENT DURA 200 18 5.5 100 UPPER BOUNDAR LOWER BOUNDAR 0 17 5.0 0.10 1.00 10.00 100.00 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 POR COMPARATOR OVERDRIVE VOLTAGE AS PERCENTAGE TEMPERATURE (°C) TEMPERATURE (°C) 3689 G32 OF RESET THRESHOLD, V 3689 G31 RST (%) 3689 G30
Watchdog Upper Boundary Period Reset Timeout Period vs Capacitance
21 100000 CPOR = 8.2nF MURATA: GRM2195C1H822FA01 10000 (ms) (ms) U 20 t RST WD 1000 19 Y PERIOD, t 100 10 18 1 RESET TIMEOUT PERIOD, UPPER BOUNDAR 17 0.1 –50 –25 0 25 50 75 100 125 150 0.001 0.01 0.1 1 10 100 1000 TEMPERATURE (°C) CWDT PIN CAPICITANCE, CWDT (nF) 3689 G33 3689 G34
Reset Timeout Period Watchdog Lower Boundary Period vs Capacitance vs Capacitance
10000 10000 1000 (ms) 1000 (ms) WDL RST 100 100 10 Y PERIOD, t 10 1 1 0.1 0.1 RESET TIMEOUT PERIOD, t LOWER BOUNDAR 0.01 0.01 0.001 0.01 0.1 1 10 100 1000 10000 0.001 0.01 0.1 1 10 100 1000 10000 CPOR PIN CAPICITANCE, CPOR (nF) CWDT PIN CAPICITANCE, CWDT (nF) 3689 G35 3689 G36 3689fe 8 For more information www.linear.com/LT3689 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts