Datasheet LT8391 (Linear Technology) - 8
| Manufacturer | Linear Technology |
| Description | 60V Synchronous 4-Switch Buck-Boost LED Controller with Spread Spectrum |
| Pages / Page | 34 / 8 — TA = 25°C, unless otherwise noted. INTVCC Voltage vs Temperature. INTVCC … |
| Revision | A |
| File Format / Size | PDF / 466 Kb |
| Document Language | English |
TA = 25°C, unless otherwise noted. INTVCC Voltage vs Temperature. INTVCC Voltage vs VIN. INTVCC UVLO Threshold
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Text Version of Document
LT8391 TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, unless otherwise noted. INTVCC Voltage vs Temperature INTVCC Voltage vs VIN INTVCC UVLO Threshold
5.15 5.15 4.0 3.9 5.10 5.10 3.8 RISING 5.05 5.05 I 3.7 INTVCC = 20mA (V ) IINTVCC = 0mA (V) (V) VCC 5.00 VCC 5.00 VCC 3.6 FALLING V INT IINTVCC = 80mA V INT V INT 3.5 4.95 4.95 3.4 4.90 4.90 3.3 4.85 4.85 3.2 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 8391 G10 8391 G11 8391 G12
VREF Voltage vs Temperature VREF Voltage vs VIN VREF UVLO Threshold
2.04 2.04 2.00 2.03 2.03 1.95 2.02 2.02 1.90 RISING 2.01 2.01 IVREF = 0mA IVREF = 100µA (V) 2.00 (V) (V) 2.00 1.85 FALLING V REF V REF V REF 1.99 1.99 I 1.80 VREF = 1mA 1.98 1.98 1.75 1.97 1.97 1.96 1.96 1.70 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 8391 G13 8391 G14 8391 G15
EN/UVLO Enable Threshold EN/UVLO Hysteresis Current CTRL1/CTRL2 Dim-Off Threshold
1.240 3.0 0.30 1.235 2.8 1.230 0.25 RISING RISING 1.225 (V) 2.6 (V) 1.220 (µA) 0.20 I HYS V CTRL FALLING V EN/UVLO FALLING 1.215 2.4 1.210 0.15 2.2 1.205 1.200 2.0 0.10 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8391 G16 8391 G17 8391 G18 8391fa 8 For more information www.linear.com/LT8391
TA = 25°C, unless otherwise noted. INTVCC Voltage vs Temperature INTVCC Voltage vs VIN INTVCC UVLO Threshold
5.15 5.15 4.0 3.9 5.10 5.10 3.8 RISING 5.05 5.05 I 3.7 INTVCC = 20mA (V ) IINTVCC = 0mA (V) (V) VCC 5.00 VCC 5.00 VCC 3.6 FALLING V INT IINTVCC = 80mA V INT V INT 3.5 4.95 4.95 3.4 4.90 4.90 3.3 4.85 4.85 3.2 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 8391 G10 8391 G11 8391 G12
VREF Voltage vs Temperature VREF Voltage vs VIN VREF UVLO Threshold
2.04 2.04 2.00 2.03 2.03 1.95 2.02 2.02 1.90 RISING 2.01 2.01 IVREF = 0mA IVREF = 100µA (V) 2.00 (V) (V) 2.00 1.85 FALLING V REF V REF V REF 1.99 1.99 I 1.80 VREF = 1mA 1.98 1.98 1.75 1.97 1.97 1.96 1.96 1.70 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 8391 G13 8391 G14 8391 G15
EN/UVLO Enable Threshold EN/UVLO Hysteresis Current CTRL1/CTRL2 Dim-Off Threshold
1.240 3.0 0.30 1.235 2.8 1.230 0.25 RISING RISING 1.225 (V) 2.6 (V) 1.220 (µA) 0.20 I HYS V CTRL FALLING V EN/UVLO FALLING 1.215 2.4 1.210 0.15 2.2 1.205 1.200 2.0 0.10 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8391 G16 8391 G17 8391 G18 8391fa 8 For more information www.linear.com/LT8391
