Datasheet LTC3826 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 30µA IQ, Dual, 2-Phase Synchronous Step-Down Controller |
| 页数 / 页 | 36 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. TRACK/SS Pull-Up Current. Shutdown … |
| 文件格式/大小 | PDF / 485 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. TRACK/SS Pull-Up Current. Shutdown (RUN) Threshold. Regulated Feedback Voltage
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LTC3826
TYPICAL PERFORMANCE CHARACTERISTICS TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.20 1.00 808 0.95 1.15 806 0.90 1.10 804 0.85 1.05 0.80 802 1.00 0.75 800 0.95 0.70 798 0.65 TRACK/SS CURRENT (μA) RUN PIN VOLTAGE (V) 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) 3826 G19 3826 G20 3826 G21
Sense Pins Total Input Bias Shutdown Current Oscillator Frequency Current vs Temperature vs Input Voltage vs Temperature
60 6 800 30 700 0 5 –30 VOUT = 10V 600 V –60 PLLLPF = INTVCC V 4 OUT = 3.3V 500 –90 V –120 PLLLPF = FLOAT 3 400 –150 300 –180 V V 2 FREQUENCY (kHz) PLLLPF = GND INPUT CURRENT (μA) OUT = 0V INPUT CURRENT (μA) –210 200 –240 1 100 –270 –300 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) 3826 G22 3826 G23 3827 G24
Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current vs Temperature vs Input Voltage vs Temperature
4.2 392 6 4.1 390 5 4.0 RISING 3.9 388 4 3.8 3.7 386 3 VOLTAGE (V) FALLING CC 3.6 384 2 INTV 3.5 SHUTDOWN CURRENT (μA) 3.4 OSCILLATOR FREQUENCY (kHz) 382 1 3.3 3.2 380 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) 3826 G25 3826 G26 3826 G27 3826fc 7
TYPICAL PERFORMANCE CHARACTERISTICS TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.20 1.00 808 0.95 1.15 806 0.90 1.10 804 0.85 1.05 0.80 802 1.00 0.75 800 0.95 0.70 798 0.65 TRACK/SS CURRENT (μA) RUN PIN VOLTAGE (V) 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) 3826 G19 3826 G20 3826 G21
Sense Pins Total Input Bias Shutdown Current Oscillator Frequency Current vs Temperature vs Input Voltage vs Temperature
60 6 800 30 700 0 5 –30 VOUT = 10V 600 V –60 PLLLPF = INTVCC V 4 OUT = 3.3V 500 –90 V –120 PLLLPF = FLOAT 3 400 –150 300 –180 V V 2 FREQUENCY (kHz) PLLLPF = GND INPUT CURRENT (μA) OUT = 0V INPUT CURRENT (μA) –210 200 –240 1 100 –270 –300 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) 3826 G22 3826 G23 3827 G24
Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current vs Temperature vs Input Voltage vs Temperature
4.2 392 6 4.1 390 5 4.0 RISING 3.9 388 4 3.8 3.7 386 3 VOLTAGE (V) FALLING CC 3.6 384 2 INTV 3.5 SHUTDOWN CURRENT (μA) 3.4 OSCILLATOR FREQUENCY (kHz) 382 1 3.3 3.2 380 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) 3826 G25 3826 G26 3826 G27 3826fc 7