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MAX6498ATA+T Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX6498ATA+T Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 16 page 72V, Overvoltage-Protection Switches/Limiter Controllers with an External MOSFET _______________________________________________________________________________________ 3 Note 1: Specifications to -40°C are guaranteed by design and not production tested. Note 2: The MAX6495–MAX6499 power up with the external MOSFET in off mode (VGATE = GND). The external MOSFET turns on tSTART after all input conditions are valid. Note 3: For accurate overtemperature-shutdown performance, place the device in close thermal contact with the external MOSFET. ELECTRICAL CHARACTERISTICS (continued) (VIN = 14V, CGATE = 6nF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS OVSET to GATE Propagation Delay tOV SET rising from VTH - 100mV to VTH + 100mV 0.6 µs UVSET to GATE, POKSET to POK Propagation Delay POKSET, UVSET falling from VTH + 100mV to VTH - 100mV 20 µs VOUTFB = VIN = 5.5V, RGATE to IN = 1M Ω VIN + 3.4 VIN + 3.8 VIN + 4.2 GATE Output High Voltage VOH VOUTFB = VIN, VIN ≥ 14V, RGATE to IN = 1MΩ VIN + 8 VIN + 10 VIN + 11 V GATE sinking 20mA, OUTFB = GND 1 GATE Output Low Voltage VOL VIN = 5.5V, GATE sinking 1mA, OUTFB = GND 0.9 V GATE Charge-Pump Current IGATE GATE = GND 100 µA GATE to OUTFB Clamp Voltage VCLMP 12 18 V IN to GATEP Output Low Voltage IGATEP_SINK = 75µA, IGATEP_SOURCE = 1µA 7.5 11.7 V IN to GATEP Clamp Voltage VIN = 24V, IGATEP_SOURCE = 10µA 12 18 V SHDN, CLEAR Logic-High Input Voltage VIH 1.4 SHDN, CLEAR Logic-Low Input Voltage VIL 0.4 V SHDN Input Pulse Width 7µs CLEAR Input Pulse Width 0.5 µs SHDN, CLEAR Input Pulldown Current SHDN is Internally pulled down to GND 0.6 1.0 1.4 µA Thermal Shutdown (Note 3) +160 °C Thermal-Shutdown Hysteresis 20 °C POKSET to POK Delay (MAX6497/MAX6498) 35 µs VIN ≥ 14V, POKSET = GND, ISINK = 3.2mA 0.4 POK Output Low Voltage (MAX6497/MAX6498) VOL VIN ≥ 2.8V, POKSET = GND, ISINK = 100µA 0.4 V POK Leakage Current (MAX6497/MAX6498) VPOKSET = 14V 100 nA |
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