Datasheet LT3492 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Triple Output LED Driver with 3000:1 PWM Dimming |
| 页数 / 页 | 22 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted). … |
| 文件格式/大小 | PDF / 338 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted). Switch Current Limit. Quiescent Current
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LT3492
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted) Switch Current Limit Quiescent Current Switch On Voltage vs Duty Cycle
14 600 1200 PWM1-3 = 5V 12 500 1000 10 400 800 8 300 600 6 PWM1-3 = 0V 200 400 INPUT CURRENT (mA) 4 SWITCH VOLTAGE (mV) SWITCH CURRENT LIMIT (mA) 2 100 200 VC = GND, NOT SWITCHING 0 0 0 0 10 20 30 40 0 200 400 600 800 1000 0 20 40 60 80 100 VIN (V) SWITCH CURRENT (mA) DUTY CYCLE (%) 3492 G01 3492 G02 3492 G03
Switch Current Limit vs Reference Voltage Temperature vs Temperature Switch Frequency vs FADJ
1200 2.04 2250 2.03 2000 1000 2.02 1750 800 1500 2.01 (V) 1250 600 2.00 REFV 1000 1.99 400 750 CURRENT LIMIT (mA) 1.98 SWITCH FREQUENCY (kHz) 500 200 1.97 250 0 1.96 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1.0 1.2 TEMPERATURE (°C) TEMPERATURE (°C) FADJ (V) 3492 G04 3492 G05 3492 G06 3492fa 5
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted) Switch Current Limit Quiescent Current Switch On Voltage vs Duty Cycle
14 600 1200 PWM1-3 = 5V 12 500 1000 10 400 800 8 300 600 6 PWM1-3 = 0V 200 400 INPUT CURRENT (mA) 4 SWITCH VOLTAGE (mV) SWITCH CURRENT LIMIT (mA) 2 100 200 VC = GND, NOT SWITCHING 0 0 0 0 10 20 30 40 0 200 400 600 800 1000 0 20 40 60 80 100 VIN (V) SWITCH CURRENT (mA) DUTY CYCLE (%) 3492 G01 3492 G02 3492 G03
Switch Current Limit vs Reference Voltage Temperature vs Temperature Switch Frequency vs FADJ
1200 2.04 2250 2.03 2000 1000 2.02 1750 800 1500 2.01 (V) 1250 600 2.00 REFV 1000 1.99 400 750 CURRENT LIMIT (mA) 1.98 SWITCH FREQUENCY (kHz) 500 200 1.97 250 0 1.96 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1.0 1.2 TEMPERATURE (°C) TEMPERATURE (°C) FADJ (V) 3492 G04 3492 G05 3492 G06 3492fa 5