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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADP1850 датащи(PDF) 4 Page - Analog Devices |
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ADP1850 датащи(HTML) 4 Page - Analog Devices |
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4 / 32 page  ADP1850 Rev. 0 | Page 4 of 32 Parameter Symbol Conditions Min Typ Max Unit GATE DRIVERS DHx Rise Time CDH = 3 nF, VBST − VSW = 5 V 16 ns DHx Fall Time CDH = 3 nF, VBST − VSW = 5 V 14 ns DLx Rise Time CDL = 3 nF 16 ns DLx Fall Time CDL = 3 nF 14 ns DHx to DLx Dead Time External 3 nF is connected to DHx and DLx 25 ns DHx or DLx Driver RON, Sourcing Current1 RON_SOURCE Sourcing 2 A with a 100 ns pulse 2 Ω Sourcing 1 A with a 100 ns pulse, VIN = 3 V 2.3 Ω DHx or DLx Driver RON, Tempco TCRON VIN = 3 V or 12 V 0.3 %/oC DHx or DLx Driver RON, Sinking Current1 RON_SINK Sinking 2 A with a 100 ns pulse 1.5 Ω Sinking 1 A with a 100 ns pulse, VIN = 3 V 2 Ω DHx Maximum Duty Cycle fSW = 300 kHz 90 % DHx Maximum Duty Cycle fSW = 1500 kHz 50 % Minimum DHx On Time fSW = 200 kHz to 1500 kHz 135 ns Minimum DHx Off Time fSW = 200 kHz to 1500 kHz 335 ns Minimum DLx On Time fSW = 200 kHz to 1500 kHz 285 ns COMPx VOLTAGE RANGE COMPx Pulse Skip Threshold VCOMP,THRES In pulse skip mode 0.9 V COMPx Clamp High Voltage VCOMP,HIGH 2.25 V THERMAL SHUTDOWN Thermal Shutdown Threshold TTMSD 155 C Thermal Shutdown Hysteresis 20 C OVERVOLTAGE AND POWER GOOD THRESHOLDS FBx Overvoltage Threshold VOV VFB rising 0.635 0.65 0.665 V FBx Overvoltage Hysteresis 30 mV FBx Undervoltage Threshold VUV VFB falling 0.525 0.55 0.578 V FBx Undervoltage Hysteresis 30 mV TRKx INPUT VOLTAGE RANGE 0 5 V FBx TO TRKx OFFSET VOLTAGE TRKx = 0.1 V to 0.57 V, offset = VFB − VTRK −10 0 +10 mV SOFT START SSx Output Current ISS During start-up 4.6 6.5 8.4 μA SSx Pull-Down Resistor During a fault condition 3 kΩ FBx to SSx Offset VSS = 0.1 V to 0.6 V, offset = VFB − VSS −10 +10 mV PGOODx PGOODx Pull-up Resistor RPGOOD Internal pull-up resistor to VCCO 12.5 kΩ PGOODx Delay 12 μs Over Voltage or Under Voltage This is the minimum duration required to trip the PGOOD signal 10 μs Minimum Duration ILIM1, ILIM2 Threshold Voltage1 Relative to PGNDx −5 0 +5 mV ILIM1, ILIM2 Output Current ILIMx = PGNDx 47 50 53 μA Current Sense Blanking Period After DLx goes high, current limit is not sensed during this period 100 ns INTEGRATED RECTIFIER (BOOST DIODE) RESISTANCE At 20 mA forward current 16 Ω ZERO CURRENT CROSS OFFSET (SWx TO PGNDx)1 In pulse skip mode only, fSW = 600 kHz 0 2 4 mV 1 Guaranteed by design. 2 Connect VIN to VCCO when 2.75 V < VIN < 5.5 V. |
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