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ADP1877ACPZ-R7 Datasheet(PDF) 4 Page - Analog Devices |
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ADP1877ACPZ-R7 Datasheet(HTML) 4 Page - Analog Devices |
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4 / 32 page  ADP1877 Rev. 0 | Page 4 of 32 Parameter Symbol Conditions Min Typ Max Units LOGIC INPUT S EN1, EN2 EN1/EN2 rising 0.57 0.63 0.68 V EN1, EN2 Hysteresis 0.03 V EN1, EN2 Input Leakage Current IEN VIN = 2.75 V to 14.5 V 1 200 nA SYNC Logic Input Low 1.3 V SYNC Logic Input High 1.9 V SYNC Input Leakage Current ISYNC SYNC = 5 V, internal 1 MΩ pull-down 5 6.5 μA GATE DRIVERS DH Rise Time CDH = 3 nF, VBST − VSW = 5 V 16 ns DH Fall Time CDH = 3 nF, VBST − VSW = 5 V 14 ns DL Rise Time CDL = 3 nF 16 ns DL Fall Time CDL = 3 nF 14 ns DH to DL Dead Time External 3 nF is connected to DH and DL 25 ns DH or DL Driver RON, Sourcing Current1 RON_SOURC Sourcing 2 A with a 100 ns pulse 2 Ω Sourcing 1 A with a 100 ns pulse, VIN = 3 V 2.3 Ω DH or DL Driver RON, Tempco TCRON VIN = 3 V or 12 V 0.3 %/oC DH or DL 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 DH Maximum Duty Cycle fOSC = 300 kHz 90 % DH Maximum Duty Cycle fOSC = 1500 kHz 50 % Minimum DH On Time fOSC = 200 kHz to 1500 kHz 130 ns Minimum DH Off Time fOSC = 200 kHz to 1500 kHz 330 ns Minimum DL On Time fOSC = 200 kHz to 1500 kHz 280 ns COMP VOLTAGE RANGE COMP Pulse Skip Threshold VCOMP,THRES In pulse skip mode 0.9 V COMP 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 FB Overvoltage Threshold VOV VFB rising 0.67 0.7 0.73 V FB Overvoltage Hysteresis 40 mV FB Undervoltage Threshold VUV VFB rising 0.51 0.54 0.57 V FB Undervoltage Hysteresis 30 mV TRK INPUT VOLTAGE RANGE 0 5 V FB TO TRK OFFSET VOLTAGE TRK = 0.5 V to 0.6 V; offset = VFB − VTRK −120 −70 −25 mV SOFT START SS Output Current ISS During start-up 4.6 6.5 8.4 μA SS Pull-Down Resistor During a fault condition 1 kΩ |
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