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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC4259A датащи(PDF) 3 Page - Linear Technology |
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LTC4259A датащи(HTML) 3 Page - Linear Technology |
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3 / 32 page  LTC4259A 3 4259Af ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AGND = DGND = 0V, VDD = 3.3V, VEE = –48V unless otherwise noted (Note 6). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Gate Driver IGON GATE Pin Current Gate On, VGATEn = VEE q –20 –50 –70 µA IGOFF GATE Pin Current Gate Off, VGATEn = VEE + 5V q 30 50 95 µA IGPD GATE Pin Short-Circuit Pull-Down VGATEn = VEE + 5V 100 mA ∆VGATE External Gate Voltage (VGATEn – VEE)IGATE = – 1µA (Note 3) q 10 13 15 V Output Voltage Sense VPG Power Good Threshold Voltage VOUTn – VEE q 123 V IVOUT Out Pin Bias Current 0V > VOUT > –10V q –6 µA –10V > VOUT > –30V q –18 µA VOUT = –48V –20 µA Current Sense VCUT Overcurrent Detection Sense Voltage VSENSEn – VEE, VOUT = VEE (Note 9) 166 187.5 199 mV VLIM Current Limit Sense Voltage VSENSEn – VEE, VOUT = VEE 201 212.5 224 mV VSENSEn – VEE, VOUT = AGND – 30V 201 224 mV VSENSEn – VEE, VOUT = AGND – 10V 30.2 mV VMIN DC Disconnect Sense Voltage VSENSEn – VEE 2.52 3.75 4.97 mV VSC Short-Circuit Sense Voltage 275 mV ISENSE SENSE Pin Bias Current VSENSEn = VEE –50 µA AC Disconnect (Note 10) ROSCIN Input Impedance of OSCIN Pin 0.1V < VOSCIN < 3V, fSINEIN < 200Hz q 200 500 k Ω AVACD Voltage Gain OSCIN to DETECT1, 2 Port Powered, PD Not Present q –2.7 –3 –3.3 V/V Voltage Gain OSCIN to DETECT3, 4 Port Powered, PD Not Present q 2.7 3 3.3 V/V IACDMAX AC Disconnect DETECT n Output Current Port Powered, –6V < VDETECTn < 0V q ±600 µA IACDMIN Remain Connected DETECT Pin Current Port Powered, VDETECTn = –3.4V q 150 200 260 µA Digital Interface VOLD Digital Output Low Voltage ISDAOUT = 3mA, IINT = 3mA q 0.4 V ISDAOUT = 5mA, IINT = 5mA q 0.7 V VILD Digital Input Low Voltage SCL, SDAIN, RESET, SHDN n, AUTO q 0.8 V VIHD Digital Input High Voltage SCL, SDAIN, RESET, SHDN n, AUTO q 2.4 V RPU Pull-Up Resistor to VDD AD0 to AD3, RESET, SHDN n 50 k Ω RPD Pull-Down Resistor to DGND AUTO 50 k Ω AC Characteristics tDETDLY Detection Delay From Detect Command or Application of PD to Port q 170 590 ms to Detect Complete tDET Detection Duration Time to Measure PD Signature Resistance (Figure 2) q 170 230 ms tCLSDLY Classification Delay From Successful Detect in Auto or Semiauto Mode q 10.1 52 ms to Class Complete From Classify Command in Manual q 10.1 420 ms tCLASS Classification Duration (Figure 2) q 10.1 13 ms tPON Power On Delay, Auto Mode From Valid Detect to Port On in Auto Mode (Figure 2) q 90 ms From Port On Command to GATE Pin Current = IGON q 1ms (Note 10) tSTART Maximum Current Limit Duration During tSTART1 = 0, tSTART0 = 0 (Figure 3) q 50 60 70 ms Port Start-Up tSTART1 = 0, tSTART0 = 1 q 25 30 35 ms tSTART1 = 1, tSTART0 = 0 q 100 120 140 ms tSTART1 = 1, tSTART0 = 1 q 200 240 280 ms |
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