Datasheet LT7101 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 105V, 1A Low EMI Synchronous Step-Down Regulator with Fast Current Programming |
| 页数 / 页 | 38 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 3.2 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Top and Bottom Switch. Minimum On-Time vs
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LT7101
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Top and Bottom Switch Minimum On-Time vs Resistance vs Temperature Temperature
1350 50 1200 45 1050 900 40 TOP SWITCH 750 ANCE (mΩ) 600 35 RESIST BOTTOM SWITCH 450 MINIMUM ON-TIME (ns) 30 300 150 25 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) 7101 G19 7101 G20
Oscillator Frequency vs Quiescent Input Current vs Input Temperature Voltage
3 10.0 SLEEP, EXTVCC = GND 2 8.0 1 6.0 0 Y CURRENT (µA) 4.0 –1 SUPPL FREQ = GND (300kHz) CHANGE IN FREQUENCY (%) V IN 2.0 –2 FREQ = 12.5k (200kHz) FREQ = 57.5k (2MHz) SHUTDOWN FREQ = INTVCC (1MHz) –3 0.0 –55 –25 5 35 65 95 125 155 0 15 30 45 60 75 90 105 TEMPERATURE (°C) VIN VOLTAGE (V) 7101 G21 7101 G22
VIN Quiescent Current vs Temperature Inductor Current at Light Load
25 VIN = 100V EXTVCC = GND BURST MODE 20 500mA/DIV PULSE–SKIPPING 15 MODE 500mA/DIV SLEEP Y CURRENT (uA) 10 FORCED CONTINUOUS SUPPL MODE V IN 5 500mA/DIV 10µs/DIV 7101 G24 SHUTDOWN VIN = 48V I 0 LOAD = 200µA –55 –25 5 35 65 95 125 155 FIGURE 14 CIRCUIT TEMPERATURE (°C) 7101 G23 Rev. 0 For more information www.analog.com 7 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 Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Top and Bottom Switch Minimum On-Time vs Resistance vs Temperature Temperature
1350 50 1200 45 1050 900 40 TOP SWITCH 750 ANCE (mΩ) 600 35 RESIST BOTTOM SWITCH 450 MINIMUM ON-TIME (ns) 30 300 150 25 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) 7101 G19 7101 G20
Oscillator Frequency vs Quiescent Input Current vs Input Temperature Voltage
3 10.0 SLEEP, EXTVCC = GND 2 8.0 1 6.0 0 Y CURRENT (µA) 4.0 –1 SUPPL FREQ = GND (300kHz) CHANGE IN FREQUENCY (%) V IN 2.0 –2 FREQ = 12.5k (200kHz) FREQ = 57.5k (2MHz) SHUTDOWN FREQ = INTVCC (1MHz) –3 0.0 –55 –25 5 35 65 95 125 155 0 15 30 45 60 75 90 105 TEMPERATURE (°C) VIN VOLTAGE (V) 7101 G21 7101 G22
VIN Quiescent Current vs Temperature Inductor Current at Light Load
25 VIN = 100V EXTVCC = GND BURST MODE 20 500mA/DIV PULSE–SKIPPING 15 MODE 500mA/DIV SLEEP Y CURRENT (uA) 10 FORCED CONTINUOUS SUPPL MODE V IN 5 500mA/DIV 10µs/DIV 7101 G24 SHUTDOWN VIN = 48V I 0 LOAD = 200µA –55 –25 5 35 65 95 125 155 FIGURE 14 CIRCUIT TEMPERATURE (°C) 7101 G23 Rev. 0 For more information www.analog.com 7 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 Typical Application Related Parts