Datasheet LTC3729 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 550kHz, PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator |
| 页数 / 页 | 30 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Maximum Current Sense Threshold. … |
| 文件格式/大小 | PDF / 356 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Maximum Current Sense Threshold. Current Sense Threshold. vs VRUN/SS (Soft-Start)
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LTC3729
TYPICAL PERFORMANCE CHARACTERISTICS Maximum Current Sense Threshold Maximum Current Sense Threshold Current Sense Threshold vs VRUN/SS (Soft-Start) vs Sense Common Mode Voltage vs ITH Voltage
80 80 90 VSENSE(CM) = 1.6V 80 70 76 60 60 50 72 40 (mV) (mV) (mV) 40 30 V SENSE V SENSE 68 V SENSE 20 10 20 0 64 –10 –20 0 60 –30 0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 VRUN/SS (V) COMMON MODE VOLTAGE (V) VITH (V) 3729 G10 3729 G11 3729 G12
Load Regulation VITH vs VRUN/SS SENSE Pins Total Source Current
0.0 2.5 100 FCB = 0V VOSENSE = 0.7V VIN = 15V FIGURE 1 2.0 –0.1 50 (%) OUT 1.5 (V) (µA) –0.2 0 V ITH 1.0 I SENSE NORMALIZED V –0.3 –50 0.5 –0.4 0 –100 0 1 2 3 4 5 0 1 2 3 4 5 6 0 2 4 6 LOAD CURRENT (A) VRUN/SS (V) VSENSE COMMON MODE VOLTAGE (V) 3729 G13 3729 G14 3729 G15
Maximum Current Sense Threshold vs Temperature RUN/SS Current vs Temperature
80 1.8 1.6 78 1.4 1.2 76 (mV) 1.0 0.8 V SENSE 74 0.6 RUN/SS CURRENT (µA) 72 0.4 0.2 70 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3729 G17 3729 G19 3729fb 6 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Maximum Current Sense Threshold Maximum Current Sense Threshold Current Sense Threshold vs VRUN/SS (Soft-Start) vs Sense Common Mode Voltage vs ITH Voltage
80 80 90 VSENSE(CM) = 1.6V 80 70 76 60 60 50 72 40 (mV) (mV) (mV) 40 30 V SENSE V SENSE 68 V SENSE 20 10 20 0 64 –10 –20 0 60 –30 0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 VRUN/SS (V) COMMON MODE VOLTAGE (V) VITH (V) 3729 G10 3729 G11 3729 G12
Load Regulation VITH vs VRUN/SS SENSE Pins Total Source Current
0.0 2.5 100 FCB = 0V VOSENSE = 0.7V VIN = 15V FIGURE 1 2.0 –0.1 50 (%) OUT 1.5 (V) (µA) –0.2 0 V ITH 1.0 I SENSE NORMALIZED V –0.3 –50 0.5 –0.4 0 –100 0 1 2 3 4 5 0 1 2 3 4 5 6 0 2 4 6 LOAD CURRENT (A) VRUN/SS (V) VSENSE COMMON MODE VOLTAGE (V) 3729 G13 3729 G14 3729 G15
Maximum Current Sense Threshold vs Temperature RUN/SS Current vs Temperature
80 1.8 1.6 78 1.4 1.2 76 (mV) 1.0 0.8 V SENSE 74 0.6 RUN/SS CURRENT (µA) 72 0.4 0.2 70 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3729 G17 3729 G19 3729fb 6 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts