Datasheet LT8616 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5μA Quiescent Current |
| Pages / Page | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. FB Voltage vs Temperature. Line … |
| File Format / Size | PDF / 444 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. FB Voltage vs Temperature. Line Regulation vs VIN1. Load Regulation. Power-Good Thresholds
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LT8616
TYPICAL PERFORMANCE CHARACTERISTICS FB Voltage vs Temperature Line Regulation vs VIN1 Load Regulation
806 0.1 0.2 804 VIN1 = VIN2 802 0.08 0.15 800 0.06 798 0.1 796 0.04 794 (%) 0.02 0.05 792 OUT 790 0 0 TAGE (mV) 788 TAGE (%) –0.02 VOL 786 VOL –0.05 784 –0.04 CHANGE IN V 782 –0.1 780 –0.06 778 –0.08 –0.15 FB1 776 FB2 774 –0.1 –0.2 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 TEMPERATURE (°C) VIN1 (V) LOAD (A) 8616 G10 8616 G11 8616 G12
Power-Good Thresholds Soft-Start Tracking Switching Frequency
15 900 2.25 800 2.2 10 700 2.15 5 600 TIVE TO FB (%) 2.1 500 0 PG LOW FALLING PG HIGH RISING TAGE (mV) 2.05 400 PG LOW RISING 2 –5 PG HIGH FALLING FB VOL 300 FREQUENCY (MHz) 200 1.95 –10 PG THRESHOLD RELA 100 1.9 RT = 14.7kΩ –15 0 1.85 –50 –25 0 25 50 75 100 125 150 0 100 200 300 400 500 600 700 800 900 1000 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) SS/TR VOLTAGE (mV) TEMPERATURE (°C) 8616 G13 8616 G14 8616 G15
Switching Period vs RT Minimum On-Time Minimum Off-Time
240 50 90 220 85 200 45 180 80 160 40 75 140 120 35 70 100 TIME (ns) TIME (ns) RESISTOR (kΩ) 65 R T 80 30 60 60 40 25 55 20 0 20 50 0 1 2 3 4 5 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 SWITCHING PERIOD (µs) TEMPERATURE (°C) TEMPERATURE (°C) 8616 G16 8616 G17 8616 G18 8616fa 6 For more information www.linear.com/LT8616
TYPICAL PERFORMANCE CHARACTERISTICS FB Voltage vs Temperature Line Regulation vs VIN1 Load Regulation
806 0.1 0.2 804 VIN1 = VIN2 802 0.08 0.15 800 0.06 798 0.1 796 0.04 794 (%) 0.02 0.05 792 OUT 790 0 0 TAGE (mV) 788 TAGE (%) –0.02 VOL 786 VOL –0.05 784 –0.04 CHANGE IN V 782 –0.1 780 –0.06 778 –0.08 –0.15 FB1 776 FB2 774 –0.1 –0.2 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 TEMPERATURE (°C) VIN1 (V) LOAD (A) 8616 G10 8616 G11 8616 G12
Power-Good Thresholds Soft-Start Tracking Switching Frequency
15 900 2.25 800 2.2 10 700 2.15 5 600 TIVE TO FB (%) 2.1 500 0 PG LOW FALLING PG HIGH RISING TAGE (mV) 2.05 400 PG LOW RISING 2 –5 PG HIGH FALLING FB VOL 300 FREQUENCY (MHz) 200 1.95 –10 PG THRESHOLD RELA 100 1.9 RT = 14.7kΩ –15 0 1.85 –50 –25 0 25 50 75 100 125 150 0 100 200 300 400 500 600 700 800 900 1000 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) SS/TR VOLTAGE (mV) TEMPERATURE (°C) 8616 G13 8616 G14 8616 G15
Switching Period vs RT Minimum On-Time Minimum Off-Time
240 50 90 220 85 200 45 180 80 160 40 75 140 120 35 70 100 TIME (ns) TIME (ns) RESISTOR (kΩ) 65 R T 80 30 60 60 40 25 55 20 0 20 50 0 1 2 3 4 5 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 SWITCHING PERIOD (µs) TEMPERATURE (°C) TEMPERATURE (°C) 8616 G16 8616 G17 8616 G18 8616fa 6 For more information www.linear.com/LT8616
