Datasheet LTC3834 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 30μA IQ Synchronous Step-Down Controller |
| 页数 / 页 | 30 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 793 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Maximum Current Sense Voltage
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LTC3834
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Maximum Current Sense Voltage SENSE Pins Total Input Maximum Current Sense vs ITH Voltage Cycle Bias Current Threshold vs Duty
100 60 120 FORCED CONTINUOUS 30 80 Burst Mode OPERATION (RISING) 0 100 Burst Mode OPERATION –30 TAGE (mV) 6O (FALLING) PULSE SKIPPING –60 80 40 –90 –120 60 20 –150 –180 40 0 –210 INPUT BIAS CURRENT (µA) –20 20 CURRENT SENSE THRESHOLD (mV) –240 –270 10% DUTY CYCLE MAXIMUM CURRENT SENSE VOL –40 –300 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 ITH PIN VOLTAGE (V) VSENSE COMMON MODE VOLTAGE (V) DUTY CYCLE (%) 3834 G13 3834 G14 3834 G15
SENSE Pins Total Input Foldback Current Limit Quiescent Current vs Temperature Bias Current vs ITH
120 40 4 38 100 TAGE (mV) 36 3 80 34 32 60 2 30 40 28 INPUT CURRENT (µA) QUIESCENT CURRENT (µA) 26 1 20 24 MAXIMUM CURRENT SENSE VOL 0 22 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) 3834 G16 3834 G17 3834 G18
TRACK/SS Pull-Up Current Shutdown (RUN) Threshold vs Temperature vs Temperature
1.30 1.00 1.25 0.95 0.90 1.20 0.85 1.15 0.80 TAGE (V) 1.10 0.75 1.05 0.70 0.65 RUN PIN VOL TRACK/SS CURRENT (µA) 1.00 0.60 0.95 0.55 0.90 0.50 –45 –30 –15 0 15 30 45 60 75 90 –45 –30 –15 0 15 30 45 60 75 90 TEMPERATURE (°C) TEMPERATURE (°C) 3834 G19 3834 G20 3834fc 6 For more information www.linear.com/LTC3834 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Maximum Current Sense Voltage SENSE Pins Total Input Maximum Current Sense vs ITH Voltage Cycle Bias Current Threshold vs Duty
100 60 120 FORCED CONTINUOUS 30 80 Burst Mode OPERATION (RISING) 0 100 Burst Mode OPERATION –30 TAGE (mV) 6O (FALLING) PULSE SKIPPING –60 80 40 –90 –120 60 20 –150 –180 40 0 –210 INPUT BIAS CURRENT (µA) –20 20 CURRENT SENSE THRESHOLD (mV) –240 –270 10% DUTY CYCLE MAXIMUM CURRENT SENSE VOL –40 –300 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 ITH PIN VOLTAGE (V) VSENSE COMMON MODE VOLTAGE (V) DUTY CYCLE (%) 3834 G13 3834 G14 3834 G15
SENSE Pins Total Input Foldback Current Limit Quiescent Current vs Temperature Bias Current vs ITH
120 40 4 38 100 TAGE (mV) 36 3 80 34 32 60 2 30 40 28 INPUT CURRENT (µA) QUIESCENT CURRENT (µA) 26 1 20 24 MAXIMUM CURRENT SENSE VOL 0 22 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) 3834 G16 3834 G17 3834 G18
TRACK/SS Pull-Up Current Shutdown (RUN) Threshold vs Temperature vs Temperature
1.30 1.00 1.25 0.95 0.90 1.20 0.85 1.15 0.80 TAGE (V) 1.10 0.75 1.05 0.70 0.65 RUN PIN VOL TRACK/SS CURRENT (µA) 1.00 0.60 0.95 0.55 0.90 0.50 –45 –30 –15 0 15 30 45 60 75 90 –45 –30 –15 0 15 30 45 60 75 90 TEMPERATURE (°C) TEMPERATURE (°C) 3834 G19 3834 G20 3834fc 6 For more information www.linear.com/LTC3834 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts