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ADP8863DBCP-EVALZ 数据表(PDF) 3 Page - Analog Devices |
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ADP8863DBCP-EVALZ 数据表(HTML) 3 Page - Analog Devices |
3 / 48 page ADP8863 Rev. 0 | Page 3 of 48 SPECIFICATIONS VIN = 3.6 V, SCL = 2.7 V, SDA = 2.7 V, nINT = open, nRST = 2.7 V, CMP_IN = 0 V, VD1:D7 = 0.4 V, Capacitor C1 = 1 μF, Capacitor C2 = 1 μF, COUT = 1 μF, typical values are at TA = 25°C and are not guaranteed, minimum and maximum limits are guaranteed from TA = −40°C to +85°C, unless otherwise noted. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit SUPPLY Input Voltage Operating Range VIN 2.5 5.5 V Start-Up Level VIN(START) VIN increasing 2.05 2.30 V Low Level VIN(STOP) VIN decreasing 1.75 1.97 V VIN(START) Hysteresis VIN(HYS) After startup 80 mV UVLO Noise Filter tUVLO 10 μs Quiescent Current IQ Prior to VIN(START) IQ(START) VIN = VIN(START) − 100 mV 10 μA During Standby IQ(STBY) VIN = 3.6 V, Bit nSTBY = 0, SCL = SDA = 0 V 0.3 1.0 μA After Startup and Switching IQ(ACTIVE) VIN = 3.6 V, Bit nSTBY = 1, IOUT = 0 mA, gain = 2× 4.5 7.2 mA OSCILLATOR Switching Frequency fSW 0.8 1 1.32 MHz Duty Cycle D 50 % OUTPUT CURRENT CONTROL Maximum Drive Current ID1:D7(MAX) VD1:D7 = 0.4 V D1 to D7 Bit SCR = 0 in the ISC7 register TJ = 25°C 26.2 30 34.1 mA TJ = −40°C to +85°C 24.4 34.1 mA D7 Only (60 mA Setting) ID7(60 mA) VD7 = 0.4 V, Bit SCR = 1 in the ISC7 register TJ = 25°C 52.5 60 67 mA TJ = −40°C to +85°C 48.8 67 mA LED Current Source Matching1 IMATCH All Current Sinks IMATCH7 VD1:D7 = 0.4 V 2.0 % D2 to D7 Current Sinks IMATCH6 VD2:D7 = 0.4 V 1.5 % Leakage Current on LED Pins ID1:D7(LKG) VIN = 5.5 V, VD1:D7 = 2.5 V, Bit nSTBY = 1 0.5 μA Equivalent Output Resistance ROUT Gain = 1× VIN = 3.6 V, IOUT = 100 mA 0.5 Ω Gain = 1.5× VIN = 3.1 V, IOUT = 100 mA 3.0 Ω Gain = 2× VIN = 2.5 V, IOUT = 100 mA 3.8 Ω Regulated Output Voltage VOUT(REG) VIN = 3 V, gain = 2×, IOUT = 10 mA 4.3 4.9 5.5 V AUTOMATIC GAIN SELECTION Minimum Voltage Gain Increases VHR(UP) Decrease VD1:D7 until the gain switches up 162 200 276 mV Minimum Current Sink Headroom Voltage VHR(MIN) IDX = IDX(MAX) × 95% 180 mV Gain Delay tGAIN The delay after gain has changed and before gain is allowed to change again 100 μs AMBIENT LIGHT SENSING COMPARATORS Ambient Light Sensor Current IALS CMP_IN = VD6 = 2.8 V, Bit CMP2_SEL = 1 0.70 1.08 1.33 mA DAC Bit Step Threshold L2 Level IL2BIT IL2BIT = IALS/250 4.3 μA Threshold L3 Level IL3BIT IL3BIT = IALS/2000 0.54 μA FAULT PROTECTION Start-Up Charging Current Source ISS VIN = 3.6 V, VOUT = 0.8 × VIN 2.5 3.75 5.5 mA |
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