Datasheet LTC3633 (Analog Devices) - 3

LTC3633
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TJ = 25°C (Note 2). VIN1 = VIN2 = 12V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Supply Range l 3.6 15 V IQ Input DC Supply Current (VIN1 + VIN2) Both Channels Active (Note 4) MODE = 0V 1.3 mA Sleep Current MODE = INTVCC, VFB1, VFB2 > 0.6 500 µA Shutdown RUN1 = RUN2 = 0V 13 µA VFB Feedback Reference Voltage l 0.594 0.6 0.606 V ∆VLINE_REG Reference Voltage Line Regulation VIN = 3.6V to 15V 0.02 %/V ∆VLOAD_REG Output Voltage Load Regulation ITH = 0.8V to 1.6V 0.05 % IFB Feedback Pin Input Current ±30 nA gm(EA) Error Amplifier Transconductance ITH = 1.2V 1.8 mS tON Minimum On Time VON = 1V, VIN = 4V 20 ns tOFF Minimum Off Time VIN = 6V 40 60 ns fOSC Oscillator Frequency VRT = INTVCC 1.4 2 2.6 MHz RT = 160k 1.7 2 2.3 MHz RT = 80k 3.4 4 4.6 MHz ILIM Positive Valley Switch Current Limit 2.6 3.5 4.5 A Negative Valley Switch Current Limit –2 A RDS(ON) Top Switch On-Resistance 130 mΩ Bottom Switch On-Resistance 65 mΩ ISW(LKG) Switch Leakage Current VIN = 15V, VRUN = 0V 0.01 ±1 µA VVIN-OV VIN Overvoltage Lockout Threshold VIN Rising 16.8 17.5 18 V VIN Falling 15.8 16.5 17 V INTVCC Voltage 3.6V < VIN < 15V, 0mA Load 3.1 3.3 3.5 V INTVCC Load Regulation 0mA to 50mA Load, VIN = 4V to 15V 0.7 % RUN Threshold Rising l 1.18 1.22 1.26 V RUN Threshold Falling l 0.98 1.01 1.04 V RUN Leakage Current VIN = 15V 0 ±3 µA V2P5 Voltage ILOAD = 0mA to 10mA l 2.46 2.5 2.54 V PGOOD Good-to-Bad Threshold VFB Rising 8 10 % VFB Falling –8 –10 % PGOOD Bad-to-Good Threshold VFB Rising –3 –5 % VFB Falling 3 5 % RPGOOD PGOOD Pull-Down Resistance 10mA Load 15 Ω tPGOOD Power Good Filter Time 20 40 µs tSS Internal Soft-Start Time 10% to 90% Rise Time 400 700 µs VFB During Tracking TRACKSS = 0.3V 0.28 0.3 0.315 V ITRACKSS TRACKSS Pull-Up Current 1.4 µA VPHMODE PHMODE Threshold Voltage PHMODE VIH 1 V PHMODE VIL 0.3 V VMODE/SYNC MODE/SYNC Threshold Voltage MODE VIH 1 V MODE VIL 0.4 V SYNC Threshold Voltage SYNC VIH 0.95 V IMODE MODE/SYNC Input Current MODE = 0V 1.5 µA MODE = INTVCC –1.5 µA 3633fd For more information www.linear.com/LTC3633 3 Document Outline Features Applications Description 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 Revision History Typical Application Related Parts