Datasheet LTC3543 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum |
| Pages / Page | 20 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 342 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Main Switch Resistance
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LTC3543
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Main Switch Resistance Synchronous Switch Resistance RDS(ON) vs Input Voltage (VIN) vs Temperature vs Temperature
500 500 500 450 450 450 400 VIN = 2.7V 350 MAIN SWITCH 400 400 VIN = 2.7V 300 VIN = 3.6V V (mΩ) (mΩ) (mΩ) IN = 3.6V 250 350 350 SYNCHRONOUS SWITCH DS(ON) 200 DS(ON) DS(ON) R R R 300 V 300 150 IN = 4.2V VIN = 4.2V 100 250 250 50 0 200 200 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –25 –10 5 20 35 50 65 80 95 110 125 –40 –25 –10 5 20 35 50 65 80 95 110 125 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3543 G07 3543 G08 3543 G09
Switching Frequency Switching Frequency vs Input Voltage (VIN) vs Temperature Output Voltage vs Load Current
2.8 2.40 1.56 VIN = 3.6V 2.7 2.35 2.6 1.54 2.30 2.5 2.4 2.25 1.52 2.3 2.20 2.2 1.50 2.15 2.1 LOAD CURRENT (mA) V 2.10 IN = 2.7V SWITCHING FREQUENCY (MHz) 2.0 SWITCHING FREQUENCY (MHz) 1.48 VIN = 3.6V 1.9 2.05 VIN = 4.2V 1.8 2.00 1.46 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –25 –10 5 20 35 50 65 80 95 110 125 0 200 400 600 800 1000 INPUT VOLTAGE (V) TEMPERATURE (°C) OUTPUT VOLTAGE (V) 3543 G10 3543 G11 3543 G12
Feedback Voltage (VFB) Feedback Voltage (VFB) vs Input Voltage (VIN) vs Temperature
612 612 VIN = 3.6V 610 610 608 608 606 606 604 604 TAGE (mV) 602 TAGE (mV) 602 600 600 598 598 596 596 FEEDBACK VOL 594 FEEDBACK VOL 594 592 592 590 590 588 588 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –25 –10 5 20 35 50 65 80 95 110 125 INPUT VOLTAGE (V) TEMPERATURE (°C) 3543 G13 3543 G14 3543fa 4
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Main Switch Resistance Synchronous Switch Resistance RDS(ON) vs Input Voltage (VIN) vs Temperature vs Temperature
500 500 500 450 450 450 400 VIN = 2.7V 350 MAIN SWITCH 400 400 VIN = 2.7V 300 VIN = 3.6V V (mΩ) (mΩ) (mΩ) IN = 3.6V 250 350 350 SYNCHRONOUS SWITCH DS(ON) 200 DS(ON) DS(ON) R R R 300 V 300 150 IN = 4.2V VIN = 4.2V 100 250 250 50 0 200 200 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –25 –10 5 20 35 50 65 80 95 110 125 –40 –25 –10 5 20 35 50 65 80 95 110 125 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3543 G07 3543 G08 3543 G09
Switching Frequency Switching Frequency vs Input Voltage (VIN) vs Temperature Output Voltage vs Load Current
2.8 2.40 1.56 VIN = 3.6V 2.7 2.35 2.6 1.54 2.30 2.5 2.4 2.25 1.52 2.3 2.20 2.2 1.50 2.15 2.1 LOAD CURRENT (mA) V 2.10 IN = 2.7V SWITCHING FREQUENCY (MHz) 2.0 SWITCHING FREQUENCY (MHz) 1.48 VIN = 3.6V 1.9 2.05 VIN = 4.2V 1.8 2.00 1.46 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –25 –10 5 20 35 50 65 80 95 110 125 0 200 400 600 800 1000 INPUT VOLTAGE (V) TEMPERATURE (°C) OUTPUT VOLTAGE (V) 3543 G10 3543 G11 3543 G12
Feedback Voltage (VFB) Feedback Voltage (VFB) vs Input Voltage (VIN) vs Temperature
612 612 VIN = 3.6V 610 610 608 608 606 606 604 604 TAGE (mV) 602 TAGE (mV) 602 600 600 598 598 596 596 FEEDBACK VOL 594 FEEDBACK VOL 594 592 592 590 590 588 588 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –25 –10 5 20 35 50 65 80 95 110 125 INPUT VOLTAGE (V) TEMPERATURE (°C) 3543 G13 3543 G14 3543fa 4
