Datasheet LT3592 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming |
| 页数 / 页 | 24 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, unless otherwise noted). … |
| 文件格式/大小 | PDF / 323 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, unless otherwise noted). Effi ciency (2 Red LEDS,. Effi ciency (1 Red LED,
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LT3592
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, unless otherwise noted) Effi ciency (2 Red LEDS, Effi ciency (1 Red LED, Effi ciency (2 Red LEDs, L = 10μH, 900kHz) L = 6.8μH, 900kHz) L = 22μH, 400kHz)
100 100 100 95 95 95 90 90 90 85 BRIGHT (500mA) 85 BRIGHT (500mA) 85 80 80 BRIGHT (500mA) 75 75 80 70 70 75 65 65 70 EFFICIENCY (%) 60 EFFICIENCY (%) 60 EFFICIENCY (%) 65 55 55 60 50 50 45 45 55 40 40 50 4 8 12 16 20 24 28 4 8 12 16 20 24 28 4 8 12 16 20 24 28 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3592 G01 3592 G02 3592 G03
Minimum VIN for 500mA Output Minimum VIN for 500mA Output Effi ciency (2 Red LEDs, Current vs VOUT, L = 22μH, Current vs VOUT, L = 6.8μH, L = 4.7μH, 2.2MHz) f = 400kHz (LED Loads) f = 900kHz (LED Loads)
100 12 12 95 11 11 90 10 10 85 BRIGHT (500mA) 9 9 80 8 8 TAGE (V) TAGE (V) 75 7 7 70 6 6 EFFICIENCY (%) 65 OUTPUT VOL 5 OUTPUT VOL 5 60 4 4 55 3 3 50 2 2 4 8 12 16 20 24 28 2 4 6 8 10 12 2 4 6 8 10 12 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3592 G04 3592 G05 3592 G06
Minimum VIN for 500mA Output Current vs VOUT, L = 4.7μH, Switch Voltage Drop Switch Voltage Drop at 500mA f = 2.2MHz (LED Loads) vs Switch Current vs Temperature
12 500 400 11 450 375 10 400 9 350 350 8 300 (mV) TAGE (V) (mV) SW 7 250 SW 325 – V – V 6 IN 200 V INV 300 5 150 OUTPUT VOL 4 100 275 3 50 2 0 250 2 4 6 8 10 12 14 16 0 100 200 300 400 500 600 700 800 –50 0 50 100 150 INPUT VOLTAGE (V) SWITCH CURRENT (mA) TEMPERATURE (°C) 3592 G08 3592 G07 3592 G09 3592fc 4
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, unless otherwise noted) Effi ciency (2 Red LEDS, Effi ciency (1 Red LED, Effi ciency (2 Red LEDs, L = 10μH, 900kHz) L = 6.8μH, 900kHz) L = 22μH, 400kHz)
100 100 100 95 95 95 90 90 90 85 BRIGHT (500mA) 85 BRIGHT (500mA) 85 80 80 BRIGHT (500mA) 75 75 80 70 70 75 65 65 70 EFFICIENCY (%) 60 EFFICIENCY (%) 60 EFFICIENCY (%) 65 55 55 60 50 50 45 45 55 40 40 50 4 8 12 16 20 24 28 4 8 12 16 20 24 28 4 8 12 16 20 24 28 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3592 G01 3592 G02 3592 G03
Minimum VIN for 500mA Output Minimum VIN for 500mA Output Effi ciency (2 Red LEDs, Current vs VOUT, L = 22μH, Current vs VOUT, L = 6.8μH, L = 4.7μH, 2.2MHz) f = 400kHz (LED Loads) f = 900kHz (LED Loads)
100 12 12 95 11 11 90 10 10 85 BRIGHT (500mA) 9 9 80 8 8 TAGE (V) TAGE (V) 75 7 7 70 6 6 EFFICIENCY (%) 65 OUTPUT VOL 5 OUTPUT VOL 5 60 4 4 55 3 3 50 2 2 4 8 12 16 20 24 28 2 4 6 8 10 12 2 4 6 8 10 12 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3592 G04 3592 G05 3592 G06
Minimum VIN for 500mA Output Current vs VOUT, L = 4.7μH, Switch Voltage Drop Switch Voltage Drop at 500mA f = 2.2MHz (LED Loads) vs Switch Current vs Temperature
12 500 400 11 450 375 10 400 9 350 350 8 300 (mV) TAGE (V) (mV) SW 7 250 SW 325 – V – V 6 IN 200 V INV 300 5 150 OUTPUT VOL 4 100 275 3 50 2 0 250 2 4 6 8 10 12 14 16 0 100 200 300 400 500 600 700 800 –50 0 50 100 150 INPUT VOLTAGE (V) SWITCH CURRENT (mA) TEMPERATURE (°C) 3592 G08 3592 G07 3592 G09 3592fc 4