Datasheet LTC3614 (Analog Devices) - 7

LTC3614
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN unless otherwise noted. Tracking Up/Down in Forced Continuous Mode, DDR Pin Tied Reference Voltage Switch On-Resistance to SVIN vs Temperature vs Input Voltage
0.606 0.05 0.604 0.04 VOUT MAIN SWITCH 500mV/DIV 0.602 TAGE (V) 0.03 (Ω) 0.600 SYNCHRONOUS SWITCH VTRACK/SS R DS(0N) 0.02 200mV/DIV 0.598 REFERENCE VOL 0.01 PGOOD 0.596 2V/DIV 0.594 0 2ms/DIV 3614 G19 –60 –40 –20 0 20 40 60 80 100 120 140 160 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VOUT = 0V TO 1.2V TEMPERATURE (°C) INPUT VOLTAGE (V) IOUT = 3A, VTRACK/SS = 0V TO 0.4V VMODE = 1.5V, VSRLIM/DDR = 3.3V 3614 G20 3614 G21
Switch On-Resistance Frequency vs Resistor on vs Temperature RT/SYNC Pin Frequency vs Temperature
0.050 4500 1.0 0.045 4000 0.040 3500 0.5 MAIN SWITCH 0.035 3000 0.030 0 (Ω) 2500 0.025 2000 0.020 –0.5 R DS(ON) SYNCHRONOUS SWITCH FREQUENCY (kHz) 1500 0.015 1000 FREQUENCY VARIATION (%) 0.010 –1.0 500 0.005 0 0 –1.5 –60 –40 –20 0 20 40 60 80 100 120 140 160 0 200 400 600 800 1000 1200 1400 –60 –40 –20 0 20 40 60 80 100 120 140 160 TEMPERATURE (°C) RESISTOR ON RT/SYNC PIN (kΩ) TEMPERATURE (°C) 3614 G22 3614 G23 3614 G24
Switch Leakage vs Temperature, Switch Leakage vs Temperature, Frequency vs Input Voltage Main Switch Synchronous Switch
1.0 14000 16000 VIN = 2.25V VIN = 2.25V 0.5 12000 VIN = 3.3V 14000 VIN = 3.3V VIN = 5.5V VIN = 5.5V 0 12000 10000 10000 –0.5 8000 8000 –1.0 6000 6000 –1.5 SWITCH LEAKAGE (nA) 4000 SWITCH LEAKAGE (nA) FREQUENCY VARIATION (%) 4000 –2.0 2000 2000 –2.5 0 0 2.25 2.75 3.25 3.75 4.25 4.75 5.25 –60 –10 40 90 140 –60 –40 –20 0 20 40 60 80 100 120 140 160 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3614 G25 3614 G27 3614 G27 3614fc For more information www.linear.com/LTC3614 7 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Package Description Typical Application Related Parts