Datasheet LTC3709 (Analog Devices) - 6

LTC3709
W U TYPICAL PERFOR A CE CHARACTERISTICS Shutdown Current at VCC = 5V Error Amplifier gm EA Load Regulation
45 1.6 0.4 40 µA) 1.5 0.3 35 30 (mS) m 1.4 0.2 EA g 25 SHUTDOWN CURRENT ( 1.3 EA LOAD REGULATION (%) 0.1 20 15 1.2 0 –40 –20 0 20 40 60 80 –40 –20 0 20 40 60 80 –40 –20 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3709 G10 3709 G11 3709 G12
VFB Pin Input Current RUN/SS Threshold Armed Threshold
–20 1.8 4.0 –25 1.6 3.5 –30 1.4 –35 3.0 1.2 –40 PIN INPUT CURRENT (nA) RUN/SS THRESHOLD (V) ARMED THRESHOLD (V) 2.5 FBV 1.0 –45 –50 0.8 2.0 –40 –20 0 20 40 60 80 –40 –20 0 20 40 60 80 –40 –20 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3709 G13 3709 G14 3709 G15
Current Sense Threshold UVLO Threshold On-Time vs ION Current vs ITH Voltage
4.5 10000 300 VRNG = 2V 250 VRNG = VCC 4.3 200 VRNG = 1V 1000 150 4.1 VRNG = 0V 100 50 3.9 ON-TIME (ns) VRNG = 0.5V 100 0 UVLO THRESHOLD (V) 3.7 –50 CURRENT SENSE THRESHOLD (mV) –100 3.5 10 –150 –40 –20 0 20 40 60 80 10 100 1000 0 0.6 1.2 1.8 2.4 TEMPERATURE (°C) ION CURRENT (µA) ITH VOLTAGE (V) 3709 G16 3709 G17 3709 G18 3709fb 6