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ADP1850ACPZ-R7 数据表(PDF) 4 Page - Analog Devices |
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ADP1850ACPZ-R7 数据表(HTML) 4 Page - Analog Devices |
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4 / 32 page  ADP1850 Data Sheet Rev. C | Page 4 of 32 Parameter Symbol Conditions Min Typ Max Unit GATE DRIVERS DHx Rise Time C DH = 3 nF, VBST − VSW = 5 V 16 ns DHx Fall Time C DH = 3 nF, VBST − VSW = 5 V 14 ns DLx Rise Time C DL = 3 nF 16 ns DLx Fall Time C DL = 3 nF 14 ns DHx to DLx Dead Time External 3 nF is connected to DHx and DLx 25 ns DHx or DLx Driver R ON, Sourcing Current1 R ON_SOURCE Sourcing 2 A with a 100 ns pulse 2 Ω Sourcing 1 A with a 100 ns pulse, V IN = 3 V 2.3 Ω DHx or DLx Driver R ON, Tempco TC RON V IN = 3 V or 12 V 0.3 %/oC DHx or DLx Driver R ON, Sinking Current1 R ON_SINK Sinking 2 A with a 100 ns pulse 1.5 Ω Sinking 1 A with a 100 ns pulse, V IN = 3 V 2 Ω DHx Maximum Duty Cycle f SW = 300 kHz 90 % DHx Maximum Duty Cycle f SW = 1500 kHz 50 % Minimum DHx On Time f SW = 200 kHz to 1500 kHz 135 ns Minimum DHx Off Time f SW = 200 kHz to 1500 kHz 335 ns Minimum DLx On Time f SW = 200 kHz to 1500 kHz 285 ns COMPx VOLTAGE RANGE COMPx Pulse Skip Threshold V COMP,THRES In pulse skip mode 0.9 V COMPx Clamp High Voltage V COMP,HIGH 2.25 V THERMAL SHUTDOWN Thermal Shutdown Threshold T TMSD 155 °C Thermal Shutdown Hysteresis 20 °C OVERVOLTAGE AND POWER GOOD THRESHOLDS FBx Overvoltage Threshold V OV V FB rising 0.635 0.65 0.665 V FBx Overvoltage Hysteresis 30 mV FBx Undervoltage Threshold V UV V FB 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 = V FB − VTRK −10 0 +10 mV SOFT START SSx Output Current I SS During start-up 4.6 6.5 8.4 µA SSx Pull-Down Resistor During a fault condition 3 kΩ FBx to SSx Offset V SS = 0.1 V to 0.6 V, offset = VFB − VSS −10 +10 mV PGOODx PGOODx Pull-up Resistor R PGOOD 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, f SW = 600 kHz 0 2 4 mV 1 Guaranteed by design. 2 Connect V IN to VCCO when 2.75 V < VIN < 5.5 V. |
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