Datasheet LTC3835 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | Low IQ Synchronous Step-Down Controller |
| 页数 / 页 | 30 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. … |
| 修订版 | F |
| 文件格式/大小 | PDF / 818 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. TRACK/SS Pull-Up Current. Shutdown (RUN) Threshold
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LTC3835
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. 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 0.80 802 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 0.55 REGULATED FEEDBACK VOLTAGE (mV) 794 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) 3835 G19 3835 G20 3835 G21
Sense Pins Total Input Current Shutdown Current Oscillator Frequency vs Temperature vs Input Voltage vs Temperature
200 25 800 V 100 OUT = 10V V 700 0 OUT = 3.3V 20 600 –100 VPLLLPF = INTVCC –200 15 500 V –300 400 PLLLPF = FLOAT –400 10 300 FREQUENCY (kHz) VPLLLPF = GND INPUT CURRENT (µA) –500 INPUT CURRENT (µA) 200 –600 V 5 OUT = OV –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 95 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3835 G22 3835 G23 3835 G24
Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current vs Temperature vs Input Voltage vs Temperature
4.2 404 12 4.1 402 10 4.0 3.9 400 8 3.8 RISING 3.7 398 6 VOLTAGE (V) CC 3.6 396 4 INTV 3.5 FREQUENCY (kHz) FALLING SHUTDOWN CURRENT (µA) 3.4 394 2 3.3 3.2 392 0 –45 –30 –15 0 15 30 45 60 75 90 5 10 15 20 25 30 35 –45 –30 –15 0 15 30 45 60 75 90 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3835 G25 3835 G26 3835 G27 Rev. F For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. 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 0.80 802 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 0.55 REGULATED FEEDBACK VOLTAGE (mV) 794 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) 3835 G19 3835 G20 3835 G21
Sense Pins Total Input Current Shutdown Current Oscillator Frequency vs Temperature vs Input Voltage vs Temperature
200 25 800 V 100 OUT = 10V V 700 0 OUT = 3.3V 20 600 –100 VPLLLPF = INTVCC –200 15 500 V –300 400 PLLLPF = FLOAT –400 10 300 FREQUENCY (kHz) VPLLLPF = GND INPUT CURRENT (µA) –500 INPUT CURRENT (µA) 200 –600 V 5 OUT = OV –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 95 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3835 G22 3835 G23 3835 G24
Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current vs Temperature vs Input Voltage vs Temperature
4.2 404 12 4.1 402 10 4.0 3.9 400 8 3.8 RISING 3.7 398 6 VOLTAGE (V) CC 3.6 396 4 INTV 3.5 FREQUENCY (kHz) FALLING SHUTDOWN CURRENT (µA) 3.4 394 2 3.3 3.2 392 0 –45 –30 –15 0 15 30 45 60 75 90 5 10 15 20 25 30 35 –45 –30 –15 0 15 30 45 60 75 90 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3835 G25 3835 G26 3835 G27 Rev. F For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts