Datasheet LTC3835-1 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Low IQ Synchronous Step-Down Controller |
| 页数 / 页 | 28 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 299 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Quiescent Current. SENSE Pins Total Input
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LTC3835-1
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Quiescent Current SENSE Pins Total Input Foldback Current Limit vs Temperature Bias Current vs ITH
120 100 12 TRACK/SS = 1V PLLIN/MODE = 0V VSENSE = 3.3V 100 95 10 90 80 8 85 60 80 6 75 40 4 INPUT CURRENT (μA) QUIESCENT CURRENT (μA) 70 20 2 65 MAXIMUM CURRENT SENSE VOLTAGE (V) 0 60 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 –45 –30 –15 0 15 30 45 60 75 90 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 FEEDBACK VOLTAGE (V) TEMPERATURE (°C) ITH VOLTAGE (V) 38351 G16 38351 G17 38351 G18
TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.20 1.00 808 1.15 0.95 806 0.90 1.10 804 0.85 1.05 802 0.80 1.00 0.75 800 0.95 0.70 798 RUN PIN VOLTAGE (V) 0.65 TRACK/SS CURRENT (μA) 0.90 796 0.60 0.85 794 0.55 REGULATED FEEDBACK VOLTAGE (mV) 0.80 0.50 792 –45 –30 –15 0 15 30 45 60 75 90 –45 –30 –15 0 15 30 45 60 75 90 –45 –30 –15 0 15 30 45 60 75 90 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 38351 G19 38351 G20 38351 G21
SENSE Pins Total Input Current Shutdown Current Oscillator Frequency vs Temperature vs Input Voltage vs Temperature
200 25 800 VOUT = 10V 100 V 700 OUT = 3.3V 0 20 600 –100 VPLLLPF = INTVCC –200 15 500 V –300 PLLLPF = FLOAT 400 –400 10 300 V FREQUENCY (kHz) PLLLPF = GND INPUT CURRENT (μA) –500 INPUT CURRENT (μA) 200 –600 V 5 OUT = 0V –700 100 –800 0 0 –45 –30 –15 0 15 30 45 60 75 90 5 10 15 20 25 30 35 –45 –25 –5 15 35 55 75 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 38351 G22 38351 G23 38351 G24 38351fc 6
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Quiescent Current SENSE Pins Total Input Foldback Current Limit vs Temperature Bias Current vs ITH
120 100 12 TRACK/SS = 1V PLLIN/MODE = 0V VSENSE = 3.3V 100 95 10 90 80 8 85 60 80 6 75 40 4 INPUT CURRENT (μA) QUIESCENT CURRENT (μA) 70 20 2 65 MAXIMUM CURRENT SENSE VOLTAGE (V) 0 60 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 –45 –30 –15 0 15 30 45 60 75 90 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 FEEDBACK VOLTAGE (V) TEMPERATURE (°C) ITH VOLTAGE (V) 38351 G16 38351 G17 38351 G18
TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.20 1.00 808 1.15 0.95 806 0.90 1.10 804 0.85 1.05 802 0.80 1.00 0.75 800 0.95 0.70 798 RUN PIN VOLTAGE (V) 0.65 TRACK/SS CURRENT (μA) 0.90 796 0.60 0.85 794 0.55 REGULATED FEEDBACK VOLTAGE (mV) 0.80 0.50 792 –45 –30 –15 0 15 30 45 60 75 90 –45 –30 –15 0 15 30 45 60 75 90 –45 –30 –15 0 15 30 45 60 75 90 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 38351 G19 38351 G20 38351 G21
SENSE Pins Total Input Current Shutdown Current Oscillator Frequency vs Temperature vs Input Voltage vs Temperature
200 25 800 VOUT = 10V 100 V 700 OUT = 3.3V 0 20 600 –100 VPLLLPF = INTVCC –200 15 500 V –300 PLLLPF = FLOAT 400 –400 10 300 V FREQUENCY (kHz) PLLLPF = GND INPUT CURRENT (μA) –500 INPUT CURRENT (μA) 200 –600 V 5 OUT = 0V –700 100 –800 0 0 –45 –30 –15 0 15 30 45 60 75 90 5 10 15 20 25 30 35 –45 –25 –5 15 35 55 75 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 38351 G22 38351 G23 38351 G24 38351fc 6