Datasheet LTC3766 (Analog Devices) - 4

LTC3766
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 15V, GND = PGND = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Drivers and Control
FG, SG RUP FG, SG Driver Pull-Up On-Resistance 1.5 Ω FG, SG RDOWN FG, SG Driver Pull-Down On-Resistance 1.0 Ω PT+, PT– RUP PT+, PT– Driver Pull-Up Resistance 1.5 Ω PT+,PT– RDOWN PT+, PT– Driver Pull-Down Resistance 1.5 Ω tFGD FGD Delay RFGD = 10kΩ 50 65 80 ns RFGD = 100kΩ 436 545 654 ns tSGD SGD Delay RSGD = 15kΩ 60 75 90 ns RSGD = 50kΩ 195 230 265 ns VSW(REV) SG Reverse Overcurrent SW Threshold LV MODE 66 73 79 mV HV MODE 140 148 156 mV ISW(REV) SG Reverse Overcurrent Adjust Current LV MODE –86 –103 –120 µA HV MODE –34.5 –42 –49 µA
VCC Supply
VCCOP VCC Operating Voltage Range 5 10 V ICC Supply Current Normal Mode VFS/SYNC = VCC = 7V (Note 5) 5 mA Shutdown VRUN = GND 210 µA VUVLOR UV Lockout Rising VCC Rising, LV MODE l 4.6 4.7 4.8 V VCC Rising, HV MODE l 7.7 7.9 8.1 V VUVLOF UV Lockout Falling VCC Falling, LV MODE l 3.8 3.9 4.0 V VCC Falling, HV MODE l 6.7 6.9 7.1 V VREGSD REGSD Threshold Voltage VREGSD Rising 1.21 V IREGSD(C) REGSD Charge Current VREGSD = 0.7V 13 μA IREGSD(D) REGSD Discharge Current VREGSD = 0.7V 3 μA
VAUX Supply
VAUXOP VAUX Operating Voltage Range 5 15 V VCCVAUX Regulated VCC Output Voltage VAUX = 15V, LV MODE 6.7 7.0 7.3 V VAUX = 15V, HV MODE 8.1 8.5 8.9 V VAUXLR VCC Load Regulation ICC = 0mA to 120mA, VAUX = 8V, LV MODE 0.8 2 % VAUXSWP VAUX Switchover Voltage Rising VAUX Ramping Positive, LV MODE 4.50 4.70 4.88 V VAUX Ramping Positive, HV MODE 7.65 8.00 8.35 V VAUXSWN VAUX Switchover Voltage Falling VAUX Ramping Negative, LV MODE 4.30 4.50 4.70 V VAUX Ramping Negative, HV MODE 7.35 7.70 8.05 V RAUX VAUX Dropout Resistance ICC = 120mA, VAUX = 4.9V 1.7 2.5 Ω RPSL VAUX Pre-Switchover Load VAUX = 4V 920 Ω
VIN Supply
VINOP VIN Operating Voltage Range 5 32 V VINCL VIN Clamp Voltage IVIN = 2mA, VRUN = GND 28 30 32 V ICLMAX VIN Clamp Current Limit VIN = 33V, VRUN = GND 3.8 5.5 7.2 mA VCCVIN Regulated VCC Output Voltage LV MODE (Note 6) 6.7 7.2 7.3 V HV MODE (Note 6) 8.1 8.5 8.9 V IIN Supply Current Operating VFS/SYNC = VCC 900 1200 µA Shutdown VRUN = GND 450 µA VINUVLO VIN Undervoltage Lockout VIN Rising 2.6 3.2 3.8 V 3766fc 4 For more information www.linear.com/LTC3766 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagram Operation Applications Information Typical Applications Typical Applications Typical Applications Package Description Revision History Typical Application Related Parts