Datasheet LT8335 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Low IQ Boost/SEPIC/ Inverting Converter with 2A, 28V Switch |
| Pages / Page | 20 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. FBX Positive Regulation Voltage. FBX … |
| File Format / Size | PDF / 1.5 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. FBX Positive Regulation Voltage. FBX Negative Regulation Voltage. EN/UVLO Pin Thresholds
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Text Version of Document
LT8335
TYPICAL PERFORMANCE CHARACTERISTICS FBX Positive Regulation Voltage FBX Negative Regulation Voltage EN/UVLO Pin Thresholds vs Temperature vs Temperature vs Temperature
1.630 –0.785 1.74 VIN = 12V VIN = 12V VIN = 12V 1.72 1.620 –0.790 1.70 1.68 1.610 –0.795 TAGE (V) 1.66 EN/UVLO RISING (TURN-ON) TAGE (V) 1.600 TAGE (V) –0.800 1.64 1.62 FBX VOL 1.590 FBX VOL –0.805 1.60 EN/UVLO PIN VOL EN/UVLO FALLING (TURN-OFF) 1.58 1.580 –0.810 1.56 1.570 –0.815 1.54 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 8335 G01 8335 G02 8335 G03
Switching Frequency Normalized Switching Frequency vs Temperature Switching Frequency vs VIN vs FBX Voltage
2.10 2.15 125 VIN = 12V V 2.08 IN = 12V 2.10 2.06 100 2.04 2.05 2.02 75 2.00 2.00 1.98 50 1.95 1.96 1.94 SWITCHING FREQUENCY (MHz) SWITCHING FREQUENCY (MHz) 1.90 25 1.92 NORMALIZED SWITCHING FREQUENCY (%) 1.90 1.85 0 –50 –25 0 25 50 75 100 125 150 175 0 5 10 15 20 25 –0.8 –0.4 0.0 0.4 0.8 1.2 1.6 JUNCTION TEMPERATURE (°C) VIN (V) FBX VOLTAGE (V) 8335 G04 8335 G05 8335 G06
Switch Current Limit vs Duty Switch Minimum On-Time Switch Minimum Off-Time Cycle vs Temperature vs Temperature
2.9 120 60 V V V IN = 12V IN = 12V IN = 12V 110 55 2.7 100 50 90 2.5 80 45 70 40 2.3 MINIMUM ON–TIME (nS) 60 MINIMUM OFF–TIME (ns) SWITCH CURRENT LIMIT (A) 35 50 2.1 40 30 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 DUTY CYCLE (%) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 8335 G07 8335 G08 8335 G09 8335f 4 For more information www.linear.com/LT8335
TYPICAL PERFORMANCE CHARACTERISTICS FBX Positive Regulation Voltage FBX Negative Regulation Voltage EN/UVLO Pin Thresholds vs Temperature vs Temperature vs Temperature
1.630 –0.785 1.74 VIN = 12V VIN = 12V VIN = 12V 1.72 1.620 –0.790 1.70 1.68 1.610 –0.795 TAGE (V) 1.66 EN/UVLO RISING (TURN-ON) TAGE (V) 1.600 TAGE (V) –0.800 1.64 1.62 FBX VOL 1.590 FBX VOL –0.805 1.60 EN/UVLO PIN VOL EN/UVLO FALLING (TURN-OFF) 1.58 1.580 –0.810 1.56 1.570 –0.815 1.54 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 8335 G01 8335 G02 8335 G03
Switching Frequency Normalized Switching Frequency vs Temperature Switching Frequency vs VIN vs FBX Voltage
2.10 2.15 125 VIN = 12V V 2.08 IN = 12V 2.10 2.06 100 2.04 2.05 2.02 75 2.00 2.00 1.98 50 1.95 1.96 1.94 SWITCHING FREQUENCY (MHz) SWITCHING FREQUENCY (MHz) 1.90 25 1.92 NORMALIZED SWITCHING FREQUENCY (%) 1.90 1.85 0 –50 –25 0 25 50 75 100 125 150 175 0 5 10 15 20 25 –0.8 –0.4 0.0 0.4 0.8 1.2 1.6 JUNCTION TEMPERATURE (°C) VIN (V) FBX VOLTAGE (V) 8335 G04 8335 G05 8335 G06
Switch Current Limit vs Duty Switch Minimum On-Time Switch Minimum Off-Time Cycle vs Temperature vs Temperature
2.9 120 60 V V V IN = 12V IN = 12V IN = 12V 110 55 2.7 100 50 90 2.5 80 45 70 40 2.3 MINIMUM ON–TIME (nS) 60 MINIMUM OFF–TIME (ns) SWITCH CURRENT LIMIT (A) 35 50 2.1 40 30 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 DUTY CYCLE (%) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 8335 G07 8335 G08 8335 G09 8335f 4 For more information www.linear.com/LT8335
