Datasheet LT8580 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization |
| Pages / Page | 32 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise … |
| Revision | B |
| File Format / Size | PDF / 1.4 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise specified. Switch Current Limit vs Duty Cycle
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LT8580
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise specified Switch Current Limit vs Duty Cycle Switch Saturation Voltage Commanded Switch Current vs SS
2.00 700 2.0 1.75 600 1.50 1.5 500 1.25 TAGE (mV) 400 1.00 1.0 300 0.75 TION VOL 0.50 TURA 200 SWITCH CURRENT (A) 0.5 SWITCH CURRENT LIMIT (A) SA 0.25 100 0 0 0 10 20 30 40 50 60 70 80 90 0 0.25 0.5 0.75 1 1.25 1.5 0 0.2 0.4 0.6 0.8 1 1.2 DUTY CYCLE (%) SWITCH CURRENT (A) SS VOLTAGE (V) 8580 G01 8580 G02 8580 G03
Switch Current Limit Positive and Negative Output vs Temperature Voltage Regulation
2.0 1.220 30 1.215 25 NEGATIVE FBX VOLTAGE (mV) 1.210 20 1.5 1.205 15 1.200 10 1.0 1.195 5 1.190 0 1.185 –5 0.5 SWITCH CURRENT LIMIT (A) POSITIVE FBX VOLTAGE (V) 1.180 –10 1.175 –15 0 1.170 –20 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 8580 G04 8580 G05
Positive and Negative FBX Current at Output Voltage Regulation Oscillator Frequency
86 86 NEGATIVE FBX CURRENT OUT OF PIN (µA) 1.8 1.6 RT = 56.2k 85 85 1.4 84 84 1.2 1.0 83 83 0.8 82 82 FREQUENCY (MHz) 0.6 0.4 81 81 RT = 422k POSITIVE FBX CURRENT INTO PIN (µA) 0.2 80 80 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 8580 G06 8580 G07 Rev. B 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise specified Switch Current Limit vs Duty Cycle Switch Saturation Voltage Commanded Switch Current vs SS
2.00 700 2.0 1.75 600 1.50 1.5 500 1.25 TAGE (mV) 400 1.00 1.0 300 0.75 TION VOL 0.50 TURA 200 SWITCH CURRENT (A) 0.5 SWITCH CURRENT LIMIT (A) SA 0.25 100 0 0 0 10 20 30 40 50 60 70 80 90 0 0.25 0.5 0.75 1 1.25 1.5 0 0.2 0.4 0.6 0.8 1 1.2 DUTY CYCLE (%) SWITCH CURRENT (A) SS VOLTAGE (V) 8580 G01 8580 G02 8580 G03
Switch Current Limit Positive and Negative Output vs Temperature Voltage Regulation
2.0 1.220 30 1.215 25 NEGATIVE FBX VOLTAGE (mV) 1.210 20 1.5 1.205 15 1.200 10 1.0 1.195 5 1.190 0 1.185 –5 0.5 SWITCH CURRENT LIMIT (A) POSITIVE FBX VOLTAGE (V) 1.180 –10 1.175 –15 0 1.170 –20 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 8580 G04 8580 G05
Positive and Negative FBX Current at Output Voltage Regulation Oscillator Frequency
86 86 NEGATIVE FBX CURRENT OUT OF PIN (µA) 1.8 1.6 RT = 56.2k 85 85 1.4 84 84 1.2 1.0 83 83 0.8 82 82 FREQUENCY (MHz) 0.6 0.4 81 81 RT = 422k POSITIVE FBX CURRENT INTO PIN (µA) 0.2 80 80 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 8580 G06 8580 G07 Rev. B 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
