Datasheet LTC3614 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 4A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter |
| 页数 / 页 | 30 / 7 — Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN unless … |
| 文件格式/大小 | PDF / 808 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics VIN = 3.3V, RT/SYNC = SVIN unless otherwise noted. Tracking Up/Down in Forced
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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
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