Datasheet LTC3810 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 100V Current Mode Synchronous Switching Regulator Controller |
| 页数 / 页 | 38 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Current Sense Threshold. Frequency … |
| 文件格式/大小 | PDF / 491 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Current Sense Threshold. Frequency vs Load Current. vs ITH Voltage. On-Time vs ION Current
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LTC3810
TYPICAL PERFORMANCE CHARACTERISTICS Current Sense Threshold Frequency vs Load Current vs ITH Voltage On-Time vs ION Current
350 400 10000 V V RNG = 2V ON = INTVCC 300 300 FORCED CONTINUOUS 1.4V 200 250 1V 1000 100 0.7V 200 0.5V 0 150 PULSE SKIP –100 ON-TIME (ns) FREQUENCY (kHz) 100 100 –200 50 CURRENT SENSE THRESHOLD (mV) –300 FRONT PAGE CIRCUIT 0 –400 10 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 3 10 100 1000 10000 LOAD CURRENT (A) ITH VOLTAGE (V) ION CURRENT (μA) 3810 G10 3810 G11 3810 G12
On-Time vs VON Voltage On-Time vs Temperature Current Limit Foldback
700 680 250 I I V ON = 300μA ON = 300μA RNG = INTVCC 600 660 200 500 640 150 400 620 300 100 ON-TIME (ns) ON-TIME (ns) 600 200 50 100 580 0 560 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 0 0.5 1 1.5 2 2.5 3 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 VON VOLTAGE (V) TEMPERATURE (°C) VFB (V) 3810 G13 3810 G14 38125 G15
Maximum Current Sense Maximum Current Sense Feedback Reference Voltage Threshold vs VRNG Voltage Threshold vs Temperature vs Temperature
400 230 0.803 VRNG = INTVCC 0.802 220 300 0.801 210 200 0.800 200 0.799 100 REFERENCE VOLTAGE (V) 190 0.798 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 180 0.797 0.5 1 1.5 2 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 V TEMPERATURE (°C) RNG VOLTAGE (V) TEMPERATURE (°C) 3810 G16 3810 G17 3810 G18 3810fc 6
TYPICAL PERFORMANCE CHARACTERISTICS Current Sense Threshold Frequency vs Load Current vs ITH Voltage On-Time vs ION Current
350 400 10000 V V RNG = 2V ON = INTVCC 300 300 FORCED CONTINUOUS 1.4V 200 250 1V 1000 100 0.7V 200 0.5V 0 150 PULSE SKIP –100 ON-TIME (ns) FREQUENCY (kHz) 100 100 –200 50 CURRENT SENSE THRESHOLD (mV) –300 FRONT PAGE CIRCUIT 0 –400 10 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 3 10 100 1000 10000 LOAD CURRENT (A) ITH VOLTAGE (V) ION CURRENT (μA) 3810 G10 3810 G11 3810 G12
On-Time vs VON Voltage On-Time vs Temperature Current Limit Foldback
700 680 250 I I V ON = 300μA ON = 300μA RNG = INTVCC 600 660 200 500 640 150 400 620 300 100 ON-TIME (ns) ON-TIME (ns) 600 200 50 100 580 0 560 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 0 0.5 1 1.5 2 2.5 3 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 VON VOLTAGE (V) TEMPERATURE (°C) VFB (V) 3810 G13 3810 G14 38125 G15
Maximum Current Sense Maximum Current Sense Feedback Reference Voltage Threshold vs VRNG Voltage Threshold vs Temperature vs Temperature
400 230 0.803 VRNG = INTVCC 0.802 220 300 0.801 210 200 0.800 200 0.799 100 REFERENCE VOLTAGE (V) 190 0.798 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 180 0.797 0.5 1 1.5 2 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 V TEMPERATURE (°C) RNG VOLTAGE (V) TEMPERATURE (°C) 3810 G16 3810 G17 3810 G18 3810fc 6