Datasheet LTC1876 (Analog Devices) - 6

LTC1876
W U TYPICAL PERFOR A CE CHARACTERISTICS Maximum Current Sense Maximum Current Sense Threshold vs Sense Common Current Sense Threshold Threshold vs VRUN/SS (Soft-Start) Mode Voltage vs ITH Voltage
80 80 90 VSENSE(CM) = 1.6V 80 70 76 60 60 50 72 40 (mV) (mV) (mV) 40 30 SENSEV SENSE 20 V 68 SENSEV 10 20 0 64 –10 –20 0 60 –30 0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 VRUN/SS (V) COMMON MODE VOLTAGE (V) VITH (V) 1876 G10 1876 G11 1876 G12
Load Regulation (Controller) VITH vs VRUN/SS SENSE Pins Total Source Current
0.0 2.5 100 FCB = 0V VOSENSE = 0.7V VIN = 15V FIGURE 1 2.0 –0.1 50 (%) OUT 1.5 µA) ( –0.2 (V) 0 ITHV 1.0 I SENSE NORMALIZED V –0.3 –50 0.5 –0.4 0 –100 0 1 2 3 4 5 0 1 2 3 4 5 6 0 2 4 6 LOAD CURRENT (A) VRUN/SS (V) VSENSE COMMON MODE VOLTAGE (V) 1876 G13 1876 G14 1876 G15
Maximum Current Sense Current Sense Pin Input Current Threshold vs Temperature vs Temperature RUN/SS Current vs Temperature
80 35 1.8 VOUT = 5V 1.6 µA) 78 33 1.4 µA) 1.2 76 31 1.0 (mV) 0.8 SENSEV 74 29 0.6 RUN/SS CURRENT ( 0.4 72 27 0.2 CURRENT SENSE INPUT CURRENT ( 70 25 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1876 G16 1876 G18 1876 G17 1876fa 6