Datasheet LT3500 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller |
| 页数 / 页 | 28 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Shutdown Input Currents. Shutdown … |
| 文件格式/大小 | PDF / 331 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Shutdown Input Currents. Shutdown Quiescent Current. vs Temperature
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LT3500
TYPICAL PERFORMANCE CHARACTERISTICS Shutdown Input Currents Shutdown Quiescent Current vs Temperature vs Temperature Error Amplifi er gm vs Temperature
6 15.0 400 5 12.5 350 VSHDN = 0.9V 4 10.0 300 3 7.5 250 VSHDN = 0.7V CURRENT (μA) CURRENT (μA) 2 5.0 200 1 2.5 TRANSCONDUCTANCE (μmhos) 150 0 0 100 –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) 3500 G04 3500 G05 3500 G06
Soft-Start Source Current Soft-Start Feedback Offset VC Switching Threshold vs Temperature vs Temperature vs Temperature
3.5 150 0.95 3.3 0.90 3.1 125 0.85 2.9 LFB 0.80 2.7 0.75 2.5 100 0.70 2.3 CURRENT (μA) VOLTAGE (mV) FB VOLTAGE (V) 2.1 0.65 75 1.9 0.60 1.7 0.55 1.5 50 0.50 –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) 3500 G07 3500 G08 3500 G09
Power Good Thresholds Power Good Sink Currents vs Temperature vs Temperature Frequency vs Temperature
0.75 1000 600 RRT/SYNC = 90.9k 0.74 900 580 PG 0.73 800 560 RISING EDGE 0.72 700 540 0.71 600 520 PG 0.70 500 500 FALLING EDGE VOLTAGE (V) 0.69 400 480 CURRENT (μA) 0.68 300 FREQUENCY (kHz) 460 0.67 200 440 0.66 100 420 0.65 0 400 –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) 3500 G10 3500 G11 3500 G12 3500fc 5
TYPICAL PERFORMANCE CHARACTERISTICS Shutdown Input Currents Shutdown Quiescent Current vs Temperature vs Temperature Error Amplifi er gm vs Temperature
6 15.0 400 5 12.5 350 VSHDN = 0.9V 4 10.0 300 3 7.5 250 VSHDN = 0.7V CURRENT (μA) CURRENT (μA) 2 5.0 200 1 2.5 TRANSCONDUCTANCE (μmhos) 150 0 0 100 –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) 3500 G04 3500 G05 3500 G06
Soft-Start Source Current Soft-Start Feedback Offset VC Switching Threshold vs Temperature vs Temperature vs Temperature
3.5 150 0.95 3.3 0.90 3.1 125 0.85 2.9 LFB 0.80 2.7 0.75 2.5 100 0.70 2.3 CURRENT (μA) VOLTAGE (mV) FB VOLTAGE (V) 2.1 0.65 75 1.9 0.60 1.7 0.55 1.5 50 0.50 –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) 3500 G07 3500 G08 3500 G09
Power Good Thresholds Power Good Sink Currents vs Temperature vs Temperature Frequency vs Temperature
0.75 1000 600 RRT/SYNC = 90.9k 0.74 900 580 PG 0.73 800 560 RISING EDGE 0.72 700 540 0.71 600 520 PG 0.70 500 500 FALLING EDGE VOLTAGE (V) 0.69 400 480 CURRENT (μA) 0.68 300 FREQUENCY (kHz) 460 0.67 200 440 0.66 100 420 0.65 0 400 –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) 3500 G10 3500 G11 3500 G12 3500fc 5