Datasheet LT8364 (Analog Devices) - 3

LT8364
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, EN/UVLO = 12V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range l 2.8 60 V VIN Quiescent Current at Shutdown VEN/UVLO = 0.2V 1 2 μA l 1 15 μA VEN/UVLO = 1.5V 2 5 μA l 2 25 μA
VIN Quiescent Current
Sleep Mode (Not Switching) SYNC = 0V 9 15 μA l 9 30 μA Active Mode (Not Switching) SYNC = 0V or INTVCC, BIAS = 0V 1200 1600 µA l 1200 1850 µA SYNC = 0V or INTVCC, BIAS = 5V 22 40 µA l 22 65 µA BIAS Threshold Rising, BIAS Can Supply INTVCC 4.4 4.65 V Falling, BIAS Cannot Supply INTVCC 4 4.25 V VIN Falling Threshold to Supply INTVCC BIAS = 12V BIAS – 2V V BIAS Falling Threshold to Supply INTVCC VIN = 12V VIN V
FBX Regulation
FBX Regulation Voltage FBX > 0V l 1.568 1.6 1.632 V FBX < 0V l –0.820 –0.80 –0.780 V FBX Line Regulation FBX > 0V, 2.8V < VIN < 60V 0.005 0.015 %/V FBX < 0V, 2.8V < VIN < 60V 0.005 0.015 %/V FBX Pin Current FBX = 1.6V, –0.8V l –10 10 nA
Oscillator
Switching Frequency (fOSC) RT = 165k l 273 300 327 kHz RT = 45.3k l 0.92 1 1.08 MHz RT = 20k l 1.85 2 2.15 MHz SSFM Maximum Frequency Deviation ∆f/fOSC • 100, RT = 20k 14 20 25 % Minimum On-Time Burst Mode, VIN = 24V (Note 6) 85 110 ns Pulse-Skip Mode, VIN = 24V (Note 6) 60 85 ns Minimum Off-Time l 50 75 ns SYNC/Mode, Mode Thresholds (Note 5) High (Rising) l 1.3 1.7 V Low (Falling) l 0.14 0.2 V SYNC/Mode, Clock Thresholds (Note 5) Rising l 1.3 1.7 V Falling l 0.4 0.8 V fSYNC/fOSC Allowed Ratio RT = 20k 0.95 1 1.25 kHz/kHz SYNC Pin Current SYNC = 2V 10 25 µA SYNC = 0V, Current Out of Pin 10 25 µA
Switch
Maximum Switch Current Limit Threshold l 4 5 6.4 A Switch Overcurrent Threshold Discharges SS Pin 7.5 A Switch RDS(ON) ISW = 0.5A 100 mΩ Switch Leakage Current VSW = 60V 0.1 1 µA 8364f For more information www.linear.com/LT8364 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS