Datasheet LTC3811 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | High Speed Dual, Multiphase Step-Down DC/DC Controller |
| 页数 / 页 | 48 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS. DRVCC Line Regulation. DRVCC Load … |
| 文件格式/大小 | PDF / 552 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. DRVCC Line Regulation. DRVCC Load Regulation. DRVCC vs Temperature
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LTC3811
TYPICAL PERFORMANCE CHARACTERISTICS DRVCC Line Regulation DRVCC Load Regulation DRVCC vs Temperature
6.010 6.1 6.5 6.008 6.4 6.0 6.006 6.3 6.004 5.9 6.2 6.002 6.1 5.8 TAGE (V) TAGE (V) (V) 6.000 CC 6.0 VOL V VOL 5.7 CC 5.998 CC DR 5.9 V V DR 5.996 DR 5.6 5.8 5.994 5.7 5.5 5.992 5.6 5.990 5.4 5.5 0 4 8 12 16 20 24 28 32 36 0 50 100 150 200 250 300 350 –50 –30 –10 10 30 50 70 90 110 130 SUPPLY VOLTAGE (V) DRV TEMPERATURE (°C) CC LOAD CURRENT (mA) 3811 G19 3811 G20 3811 G21
DRVCC Undervoltage Lockout EXTVCC Thresholds vs Thresholds vs Temperature LDO Dropout Voltage vs Current Temperature
5.0 700 5.0 TA = 25°C 4.5 600 4.0 EXTV DRV CC RISING CC RISING 4.5 3.5 500 3.0 DRV 400 CC FALLING TAGE (mV) 2.5 EXTV 4.0 CC FALLING 300 2.0 THRESHOLDS (V) CC 1.5 V TAGE LOCKOUT THRESHOLDS (V) 200 DROPOUT VOL EXT 3.5 VOL 1.0 100 0.5 UNDER 0 0 3.0 –50 –30 –10 10 30 50 70 90 110 130 0 10 20 30 40 50 60 70 80 90 100 –50 –30 –10 10 30 50 70 90 110 130 TEMPERATURE (°C) CURRENT (mA) TEMPERATURE (°C) 3811 G22 3811 G23 3811 G24
RUN Pin Threshold vs Current Sense Amplifi er gm EXTVCC Switch IR Drop vs Current Supply Voltage vs Temperature
500 2.5 7.0 TA = 25°C 450 6.5 400 2.0 (mS) 6.0 350 m 300 5.5 1.5 25°C –40°C 250 5.0 200 1.0 SWITCH IR DROP (mV) 85°C 4.5 CC 150 V RUN PIN THRESHOLD (V) 4.0 EXT 100 0.5 CURRENT SENSE AMP g 50 3.5 0 0 3.0 0 10 20 30 40 50 60 70 80 90 100 0 4 8 12 16 20 24 28 32 36 –50 –30 –10 10 30 50 70 90 110 130 EXTVCC CURRENT (mA) SUPPLY VOLTAGE (V) TEMPERATURE (°C) 3811 G25 3811 G26 3811 G27 3811f 8
TYPICAL PERFORMANCE CHARACTERISTICS DRVCC Line Regulation DRVCC Load Regulation DRVCC vs Temperature
6.010 6.1 6.5 6.008 6.4 6.0 6.006 6.3 6.004 5.9 6.2 6.002 6.1 5.8 TAGE (V) TAGE (V) (V) 6.000 CC 6.0 VOL V VOL 5.7 CC 5.998 CC DR 5.9 V V DR 5.996 DR 5.6 5.8 5.994 5.7 5.5 5.992 5.6 5.990 5.4 5.5 0 4 8 12 16 20 24 28 32 36 0 50 100 150 200 250 300 350 –50 –30 –10 10 30 50 70 90 110 130 SUPPLY VOLTAGE (V) DRV TEMPERATURE (°C) CC LOAD CURRENT (mA) 3811 G19 3811 G20 3811 G21
DRVCC Undervoltage Lockout EXTVCC Thresholds vs Thresholds vs Temperature LDO Dropout Voltage vs Current Temperature
5.0 700 5.0 TA = 25°C 4.5 600 4.0 EXTV DRV CC RISING CC RISING 4.5 3.5 500 3.0 DRV 400 CC FALLING TAGE (mV) 2.5 EXTV 4.0 CC FALLING 300 2.0 THRESHOLDS (V) CC 1.5 V TAGE LOCKOUT THRESHOLDS (V) 200 DROPOUT VOL EXT 3.5 VOL 1.0 100 0.5 UNDER 0 0 3.0 –50 –30 –10 10 30 50 70 90 110 130 0 10 20 30 40 50 60 70 80 90 100 –50 –30 –10 10 30 50 70 90 110 130 TEMPERATURE (°C) CURRENT (mA) TEMPERATURE (°C) 3811 G22 3811 G23 3811 G24
RUN Pin Threshold vs Current Sense Amplifi er gm EXTVCC Switch IR Drop vs Current Supply Voltage vs Temperature
500 2.5 7.0 TA = 25°C 450 6.5 400 2.0 (mS) 6.0 350 m 300 5.5 1.5 25°C –40°C 250 5.0 200 1.0 SWITCH IR DROP (mV) 85°C 4.5 CC 150 V RUN PIN THRESHOLD (V) 4.0 EXT 100 0.5 CURRENT SENSE AMP g 50 3.5 0 0 3.0 0 10 20 30 40 50 60 70 80 90 100 0 4 8 12 16 20 24 28 32 36 –50 –30 –10 10 30 50 70 90 110 130 EXTVCC CURRENT (mA) SUPPLY VOLTAGE (V) TEMPERATURE (°C) 3811 G25 3811 G26 3811 G27 3811f 8