Datasheet LTC3447 (Analog Devices) - 5

LTC3447
W U TYPICAL PERFOR A CE CHARACTERISTICS RDS(ON) vs Supply Voltage RDS(ON) vs Temperature Output Voltage vs Supply Voltage
0.60 0.60 2.060 0.720 VIN = 3.6V 0.55 0.55 2.055 0.715 DAC = MAX 0.50 0.50 2.050 0.710 ) V Ω 0.45 Ω 0.45 PFET 2.045 0.705 OUTMIN ( (V) PFET 0.40 0.40 2.040 0.700 (V) DS(ON) DS(ON) R 0.35 R 0.35 OUTMAXV 2.035 0.695 NFET DAC = MIN NFET 0.30 0.30 2.030 0.690 0.25 0.25 2.025 0.685 0.20 0.20 2.020 0.680 2.5 3.5 4.5 5.5 – 40 –20 0 20 40 60 80 100 120 2.5 3.5 4.5 5.5 SUPPLY VOLTAGE (V) TEMPERATURE (°C) SUPPLY VOLTAGE (V) 3447 G10 3447 G11 3447 G12
Feedback Reference vs Supply Feedback Voltage vs Voltage Temperature Load Step (200mA to 400mA)
610 618 612 VOUT 605 50mV/DIV 606 (V) (V) 600 600 FB V FB LOAD CURRENT 594 595 200mA/DIV 588 590 582 2.5 3.5 4.5 5.5 – 40 –20 0 20 40 60 80 100 120 40µs/DIV SUPPLY VOLTAGE (V) TEMPERATURE (°C) 3447 G13 3447 G15 3447 G15
Soft-Start with No Load VOUT(MIN) to VOUT(MAX) Transition VOUT(MAX) to VOUT(MIN) Transition
PULSE SKIP MODE BURST MODE OPERATION 500mV/DIV 500mV/DIV VOUT VOUT 500mV/DIV 500mV/DIV VOUT 5V/DIV PGOOD INDUCTOR CURRENT 100mA/DIV 200mA/DIV 200mA/DIV INDUCTOR CURRENT 5V/DIV 5V/DIV INDUCTOR CURRENT PGOOD PGOOD 3447 G16 3447 G17 3447 G18 200µs/DIV 100µs/DIV 100µs/DIV 3447f 5