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LTC3533 Datasheet(PDF) 9 Page - Linear Technology |
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LTC3533 Datasheet(HTML) 9 Page - Linear Technology |
9 / 28 page LTC3780 9 3780fe PIN FUNCTIONS Load Step Load Step Load Step Line Transient Line Transient TYPICAL PERFORMANCE CHARACTERISTICS VOUT 500mV/DIV 200μs/DIV VIN = 18V VOUT = 12V LOAD STEP: 0A TO 5A CONTINUOUS MODE 3780 G27 IL 5A/DIV VOUT 500mV/DIV 200μs/DIV VIN = 12V VOUT = 12V LOAD STEP: 0A TO 5A CONTINUOUS MODE 3780 G28 IL 5A/DIV VOUT 500mV/DIV 200μs/DIV VIN = 6V VOUT = 12V LOAD STEP: 0A TO 5A CONTINUOUS MODE 3780 G29 IL 5A/DIV VOUT 500mV/DIV VIN 10V/DIV 500μs/DIV VOUT = 12V ILOAD = 1A VIN STEP: 7V TO 20V CONTINUOUS MODE 3780 G30 IL 1A/DIV VOUT 500mV/DIV VIN 10V/DIV 500μs/DIV VOUT = 12V ILOAD = 1A VIN STEP: 20V TO 7V CONTINUOUS MODE 3780 G31 IL 1A/DIV (SSOP/QFN) PGOOD (Pin 1/Pin 30): Open-Drain Logic Output. PGOOD is pulled to ground when the output voltage is not within ±7.5% of the regulation point. SS (Pin 2/Pin 31): Soft-start reduces the input power sources’ surge currents by gradually increasing the controller’s current limit. A minimum value of 6.8nF is recommended on this pin. SENSE+ (Pin 3/Pin 1): The (+) Input to the Current Sense and Reverse Current Detect Comparators. The ITH pin voltage and built-in offsets between SENSE– and SENSE+ pins, in conjunction with RSENSE, set the current trip threshold. SENSE– (Pin 4/Pin 2): The (–) Input to the Current Sense and Reverse Current Detect Comparators. ITH (Pin 5/Pin 3): Current Control Threshold and Error Amplifier Compensation Point. The current comparator threshold increases with this control voltage. The voltage ranges from 0V to 2.4V. TA = 25°C, unless otherwise noted. |
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