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LT3596 Datasheet(PDF) 3 Page - Linear Technology |
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LT3596 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  LT3597 3 3597f ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Operating Voltage l 6 55 V Quiescent Current from VIN EN/UVLO = 0.4V BIAS = 5V, Not Switching BIAS = 0V, Not Switching 2.1 4 2 4 6 µA mA mA Minimum BIAS Voltage 3 3.1 V Quiescent Current from BIAS EN/UVLO = 0.4V BIAS = 5V, Not Switching BIAS = 0V, Not Switching, Current Out of Pin 2 60 2 3 150 µA mA µA EN Threshold (Falling) 0.4 0.7 V UVLO Threshold (Falling) 1.47 1.51 1.53 V EN/UVLO Pin Current (Hysteresis) EN/UVLO = 1.6V EN/UVLO = 1.4V 4 10 5.1 6 nA µA FB1-3 Regulation Voltage 1.15 1.22 1.25 V FB1-3 Pin Bias Current FB = 6V 200 nA Maximum Duty Cycle RT = 220k (200kHz) RT = 33.2k (1MHz) 90 78 95 85 % % Switch Saturation Voltage ISW1-3 = 100mA 265 mV Switch Current Limit 400 510 700 mA DA Pin Current to Stop OSC 225 280 350 mA Switch Leakage VSW1-3 = 0V 700 nA BST1-3 Pin Current ISW1-3 = 100mA 2 mA Switching Frequency RT = 220k RT = 33.2k 170 900 200 1000 230 1100 kHz kHz SYNC Input Low 0.4 V SYNC Input High 1.6 V SYNC Frequency Range RT = 220k RT = 47k 240 1000 kHz kHz SYNC Pin Bias Current VSYNC = 3.3V 200 nA Soft-Start Time (Note 4) 2.5 ms VREF Voltage IVREF = 0µA l 1.96 2.0 2.04 V Maximum VREF Current 200 µA ISET1-3 Pin Voltage RISET1-3 = 20k, VCTRL = VCTRLM = TSET = 1.5V 1.0 V TSET Voltage for LED Current Derating 540 mV TSET Pin Leakage Current VTSET = 1.0V 200 nA ILED1-3 LED Current RISET1-3 = 20k l 98 97 100 100 102 103 mA mA The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 24V, BOOST = 29V, BIAS = 5V, EN/UVLO = 5V, PWM1-3 = 3.3V, CTRL1-3 = CTRLM = TSET = 2.0V, VOUT1-3 = 24V, SYNC = 0V, unless otherwise specified. (Note 2) |
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