Datasheet LTC3636, LTC3636-1 (Analog Devices) - 3

LTC3636/LTC3636-1
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified 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
VIN1 Supply Range l 3.1 20 V VIN1 Supply Range l 3.1 20 V VIN2 Supply Range 3.1V < VIN1 < 20V l 1.5 20 V Output Voltage Range (Note 4) LTC3636 0.6 5 V LTC3636-1 1.8 12 V IQ Input DC Supply Current (VIN1 + VIN2) Both Channels Active (Note 5) MODE = 0V 1.3 mA Sleep Current MODE = INTVCC, VFB1, VFB2 > 0.6 600 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 = 3.1V to 20V 0.002 %/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 LTC3636 30 35 ns LTC3636-1 30 tOFF Minimum Off Time 100 ns fOSC Oscillator Frequency VRT = INTVCC 1.4 2 2.6 MHz RT = 162k 1.7 2 2.3 MHz RT = 80.6k 3.4 4 4.6 MHz ILIM Val ey Switch Current Limit ITH = 1.8V 6 6.6 7.2 A Negative Val ey Switch Current Limit –4.2 A RDS(ON) Top Switch On-Resistance 32 mΩ Bottom Switch On-Resistance 18 mΩ ISW(LKG) Switch Leakage Current VIN = 20V, VRUN = 0V 0.01 ±1 µA Internal Temperature Monitor TA = 25°C 1.5 V Internal Temperature Monitor Slope (Note 6) 200 °C/V VVIN-OV VIN Overvoltage Lockout Threshold VIN Rising 22.5 V VIN Falling 20.3 21.5 22.5 V INTVCC Voltage 3.6V < VIN < 20V, 0mA Load 3.1 3.3 3.5 V INTVCC Load Regulation 0mA to 50mA Load, VIN = 4V to 20V 1.3 % INTVCC Undervoltage Lockout Threshold INTVCC Rising, VIN = INTVCC 2.7 2.9 V INTVCC Falling, VIN = INTVCC 2.55 V RUN Threshold Rising l 1.16 1.22 1.28 V RUN Threshold Fal ing l 0.96 1.01 1.06 V RUN Leakage Current 0 ±3 µA 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 % 3636fb For more information www.linear.com/LTC3636 3 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description Typical Application Related Parts