Datasheet LTC3890-2 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller |
| 页数 / 页 | 42 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS. Current Limit. vs Feedback Voltage. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 958 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Current Limit. vs Feedback Voltage. Quiescent Current vs Temperature
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LTC3890-2
TYPICAL PERFORMANCE CHARACTERISTICS Current Limit vs Feedback Voltage Quiescent Current vs Temperature INTVCC vs Load Current
80 80 5.50 VIN = 12V VIN = 12V 70 ILIM = FLOAT 75 5.25 70 TAGE (mV) 60 EXTVCC = 0V 65 5.00 50 EXTVCC = 8.5V I 60 LIM = INTVCC 40 55 4.75 VOLTAGE (V) 30 50 CC ILIM = GND 45 4.50 EXTV INTV CC = 5V 20 QUIESCENT CURRENT (µA) 40 4.25 10 35 MAXIMUM CURRENT SENSE VOL 0 30 4.00 0 100 200 300 400 500 600 700 800 –75 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 FEEDBACK VOLTAGE (MV) TEMPERATURE (°C) LOAD CURRENT (mA) 38902 G16 38902 G17 38902 G18
TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.10 1.40 808 1.35 806 1.05 1.30 RUN1 RISING 804 RUN2 RISING 1.25 802 1.00 1.20 800 1.15 RUN1 FALLING 798 RUN PIN VOLTAGE (V) TRACK/SS CURRENT (µA) 0.95 1.10 RUN2 FALLING 796 1.05 REGULATED FEEDBACK VOLTAGE (mV) 794 0.90 1.00 792 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 38902 G19 38902 G20 38902 G21 Rev. A 8 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration 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 Current Limit vs Feedback Voltage Quiescent Current vs Temperature INTVCC vs Load Current
80 80 5.50 VIN = 12V VIN = 12V 70 ILIM = FLOAT 75 5.25 70 TAGE (mV) 60 EXTVCC = 0V 65 5.00 50 EXTVCC = 8.5V I 60 LIM = INTVCC 40 55 4.75 VOLTAGE (V) 30 50 CC ILIM = GND 45 4.50 EXTV INTV CC = 5V 20 QUIESCENT CURRENT (µA) 40 4.25 10 35 MAXIMUM CURRENT SENSE VOL 0 30 4.00 0 100 200 300 400 500 600 700 800 –75 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 FEEDBACK VOLTAGE (MV) TEMPERATURE (°C) LOAD CURRENT (mA) 38902 G16 38902 G17 38902 G18
TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.10 1.40 808 1.35 806 1.05 1.30 RUN1 RISING 804 RUN2 RISING 1.25 802 1.00 1.20 800 1.15 RUN1 FALLING 798 RUN PIN VOLTAGE (V) TRACK/SS CURRENT (µA) 0.95 1.10 RUN2 FALLING 796 1.05 REGULATED FEEDBACK VOLTAGE (mV) 794 0.90 1.00 792 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 38902 G19 38902 G20 38902 G21 Rev. A 8 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts