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ADP8140ACPZ-2-R7 数据表(PDF) 3 Page - Analog Devices |
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ADP8140ACPZ-2-R7 数据表(HTML) 3 Page - Analog Devices |
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3 / 23 page  Data Sheet ADP8140 Rev. B | Page 3 of 23 SPECIFICATIONS VIN = 12 V, EN = DIM = VT = 3.0 V, MIN = MODE = 0 V. Typical values are at TJ = 25°C and are not guaranteed. Minimum and maximum limits are guaranteed from TJ = −40°C to +125°C, unless otherwise noted. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit SUPPLY Input Voltage Operating Range VIN 3.0 30.0 V Undervoltage Lockout VUVLO 2.85 2.95 V Quiescent Current During Standby IQ(STBY) EN = 0 V, VIN = 3.3 V to 30 V 200 μA During Operation IQ(ACTIVE) EN = 3 V, VIN = 3.3 V to 30 V, RSET = 71.5 kΩ 4.1 4.5 mA REG Output Output Voltage VREG1 VIN = 3.3 V to 30 V, IREG = 1 mA 2.85 3.0 3.15 V VREG2 VIN = 3 V, IREG = 1 mA 2.85 2.95 V Source Current IREGMAX VIN = 3.3 V to 30 V 15 mA Load Regulation VIN = 3.3 V to 30 V, IREG = 0.1 mA to 15 mA 0.75 mV/mA FEEDBACK OUTPUT FB_OUT Error Amplifier (EA) Accuracy VEA(450) 430 450 476 mV VEA(350) 324 350 380 mV FB_OUT NMOS Pull-Down Current IFB_PD SINKx = 0 V, FB_OUT = 3 V 12.0 15.0 18.0 mA FB_OUT Stage Gain GFB Force 1.2 V and 1.3 V on COMP, measure FB_OUT current (FB_OUT = 12 V) 12500 17000 22000 μmho FB_OUT Fault Current IFB_FC Fault activated, FB_OUT = 30 V 0.04 1 μA Amplifier Transconductance COMPGM 30 60 120 μmho Amplifier Transconductance Output Source COMPSOURCE COMP pin output source current 110 μA Sink COMPSINK COMP pin output sink current 1.5 mA Resistance COMPRO 20 MΩ Low Gain EA GBUFF Gain in buffer mode (MODE = 30.1 kΩ to GND) 3.6 3.9 4.2 Low Gain Bandwidth MODE = 30.1 kΩ to GND 100 kHz ISET Accuracy ILED_500 RSET = 5.11 kΩ, SINKx = 600 mV 475 500 525 mA ILED_350 RSET = 7.32 kΩ, SINKx = 600 mV 332.5 350 367.5 mA ILED_100 RSET = 25.5 kΩ, SINKx = 600 mV 95 100 105 mA ILED_35 RSET = 71.5 kΩ, SINKx = 600 mV 33.0 35 37.5 mA Shorted Current ISET = GND 500 570 620 mA Open Current ISET = open 15 17 mA CURRENT SINKS Current Sink Headroom Voltage at Maximum Current VHR_500 RSET = 5.11 kΩ, ILED = 95% × ILED_500 320 430 mV VHR_350 RSET = 7.32 kΩ, ILED = 95% × ILED_350 210 324 mV Current at 350 mV IHR_350 Maximum guaranteed current using the 350 mV reference option 350 mA Sink Matching Matching = (ISINK_MAX − ISINK_MIN)/(ISINK_MAX + ISINK_MIN) × 100 At 500 mA Current IMATCH500 0.2 2 % At 350 mA Current IMATCH350 0.25 2 % At 100 mA Current IMATCH100 0.25 2 % At 35 mA Current IMATCH35 0.3 2 % |
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