Datasheet LT4356-3 (Analog Devices) - 3

LT4356-3
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Operating Voltage Range l 4 80 V ICC VCC Supply Current VSHDN = Float l 1 1.5 mA VSHDN = 0V, IN+ = 1.3V 7 25 µA LT4356C, LT4356I l 7 30 µA LT4356H, LT4356MP l 7 40 µA IR Reverse Input Current VSNS = VCC = –30V, SHDN Open l 0.3 1 mA VSNS = VCC = VSHDN = –30V l 0.8 2 mA ΔVGATE GATE Pin Output High Voltage VCC = 4V; (VGATE – VOUT) l 4.5 8 V 80V ≥ VCC ≥ 8V; (VGATE – VOUT) l 10 16 V IGATE(UP) GATE Pin Pull-Up Current VGATE = 12V; VCC = 12V; LT4356C, LT4356I, LT4356H l –4 –23 –36 µA VGATE = 12V; VCC = 12V; LT4356MP l –4 –23 –38 µA VGATE = 48V; VCC = 48V l –4.5 –30 –50 µA IGATE(DN) GATE Pin Pull-Down Current Overvoltage, VFB = 1.4V, VGATE = 12V l 75 150 mA Overcurrent, VCC – VSNS = 120mV, VGATE = 12V l 4 10 mA Shutdown Mode, VSHDN = 0V, VGATE = 12V l 1.5 5 mA VFB FB Pin Servo Voltage VGATE = 12V, VOUT = 12V; LT4356C, LT4356I l 1.225 1.25 1.275 V VGATE = 12V, VOUT = 12V; LT4356H, LT4356MP l 1.215 1.25 1.275 V IFB FB Pin Input Current VFB = 1.25V l 0.3 1 µA ΔVSNS Overcurrent Fault Threshold ΔVSNS = (VCC – VSNS), VCC = 12V; LT4356C, LT4356I l 45 50 55 mV ΔVSNS = (VCC – VSNS), VCC = 12V; LT4356H l 42.5 50 55 mV ΔVSNS = (VCC – VSNS), VCC = 12V; LT4356MP l 42.5 50 56 mV ΔV l SNS = (VCC – VSNS), VCC = 48V; LT4356C, LT4356I 46 51 56 mV ΔV l SNS = (VCC – VSNS), VCC = 48V; LT4356H 43 51 56 mV l ΔVSNS = (VCC – VSNS), VCC = 48V; LT4356MP 43 51 57 mV ISNS SNS Pin Input Current VSNS = VCC = 12V to 48V l 5 10 22 µA ILEAK FLT, EN Pins Leakage Current FLT, EN = 80V l 2.5 µA AOUT Pin Leakage Current AOUT = 80V 4.5 µA ITMR TMR Pin Pull-up Current VTMR = 1V, VFB = 1.5V, (VCC – VOUT) = 0.5V l –1.5 –2.5 –4 µA VTMR = 1V, VFB = 1.5V, (VCC – VOUT) = 75V l –44 –50 –56 µA VTMR = 1.3V, VFB = 1.5V, (VCC – VOUT) = 75V l –3.5 –5.5 –8.5 µA V l TMR = 1V, ΔVSNS = 60mV, (VCC – VOUT) = 0.5V –2.5 –4.5 –6.5 µA V l TMR = 1V, ΔVSNS = 60mV, (VCC – VOUT) = 80V –195 –260 –325 µA TMR Pin Pull-down Current VTMR = 1V, VFB = 1V, ΔVSNS = 0V l 1.5 2.2 2.7 µA VTMR TMR Pin Thresholds FLT From High to Low, VCC = 5V to 80V l 1.22 1.25 1.28 V ΔVTMR Early Warning Period From FLT going Low to GATE Going Low, VCC = 5V to 80V l 80 100 120 mV V + IN IN+ Pin Threshold l 1.22 1.25 1.28 V I + + IN IN+ Pin Input Current VIN = 1.25V l 0.3 1 µA VOL FLT, EN, AOUT Pins Output Low ISINK = 2mA l 2 8 V ISINK = 0.1mA l 300 800 mV IOUT OUT Pin Input Current VOUT = VCC = 12V; LT4356C, LT4356I, LT4356H l 200 300 µA VOUT = VCC = 12V; LT4356MP l 200 310 µA VOUT = VCC = 12V, VSHDN = 0V l 6 14 mA ΔVOUT OUT Pin High Threshold ΔVOUT = VCC – VOUT; EN From Low to High l 0.25 0.5 0.7 V Rev D For more information www.analog.com 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application .18702 Applications Typical Application Description 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