Datasheet LT3473, LT3473A (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Micropower 1A Boost Converter with Schottky and Output Disconnect |
| 页数 / 页 | 12 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS TA = 25. C unless otherwise noted. … |
| 文件格式/大小 | PDF / 276 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS TA = 25. C unless otherwise noted. Sleep Mode Quiescent Current. (Not Switching)
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LT3473/LT3473A
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25
°
C unless otherwise noted. Sleep Mode Quiescent Current Sleep Mode Quiescent Current (Not Switching) SHDN Pin Current
105 102 2.5 SHDN = 3V SHDN = 3V A) A) µ VIN = 3V µ 100 VIN = 3V 2.0 SHDN = 3V A) 98 µ 100 1.5 96 94 1.0 95 92 SHDN = 1.5V SHDN PIN CURRENT ( 0.5 90 SLEEP MODE QUIESCENT CURRENT ( SLEEP MODE QUIESCENT CURRENT ( 90 88 0 –50 0 50 100 0 2 4 6 8 10 12 14 16 –50 0 50 100 TEMPERATURE (°C) INPUT VOLTAGE, VIN (V) TEMPERATURE (°C) 3473 G04 3473 G5 3473 G06
Switch VCE(SAT) Switch Saturation Voltage Schottky I-V Characteristic
450 50 1000 ISW = 100mA 400 900 49 350 800 48 700 300 47 600 250 46 500 200 45 400 150 300 100 44 200 SWITCH SATURATION VOLTAGE (mV) 50 SWITCH SATURATION VOLTAGE (mV) 43 SCHOTTKY FORWARD CURRENT (mA) 100 0 42 0 0 200 400 600 800 1000 1200 –50 0 50 100 0 200 400 600 800 1000 SWITCH CURRENT (mA) TEMPERATURE (°C) SCHOTTKY FORWARD DROP (mV) 3473 G07 3473 G08 3473 G09
Schottky Forward Voltage Output Disconnect Voltage Drop Switching Frequency
550 400 1.4 ID = 100mA 90°C 350 25°C 1.2 500 300 –45°C 1.0 250 450 0.8 200 400 0.6 150 VOLTAGE DROP (mV) 0.4 100 350 SWITCHING FREQUENCY (MHz) SCHOTTKY FORWARD VOLTAGE (mV) 50 0.2 300 0 0 –50 0 50 100 0 20 40 60 80 100 0 5 10 15 TEMPERATURE (°C) COLLECTOR CURRENT (mA) INPUT VOLTAGE, VIN (V) 3473 G10 3473 G11 3473 G12 3473f 4
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25
°
C unless otherwise noted. Sleep Mode Quiescent Current Sleep Mode Quiescent Current (Not Switching) SHDN Pin Current
105 102 2.5 SHDN = 3V SHDN = 3V A) A) µ VIN = 3V µ 100 VIN = 3V 2.0 SHDN = 3V A) 98 µ 100 1.5 96 94 1.0 95 92 SHDN = 1.5V SHDN PIN CURRENT ( 0.5 90 SLEEP MODE QUIESCENT CURRENT ( SLEEP MODE QUIESCENT CURRENT ( 90 88 0 –50 0 50 100 0 2 4 6 8 10 12 14 16 –50 0 50 100 TEMPERATURE (°C) INPUT VOLTAGE, VIN (V) TEMPERATURE (°C) 3473 G04 3473 G5 3473 G06
Switch VCE(SAT) Switch Saturation Voltage Schottky I-V Characteristic
450 50 1000 ISW = 100mA 400 900 49 350 800 48 700 300 47 600 250 46 500 200 45 400 150 300 100 44 200 SWITCH SATURATION VOLTAGE (mV) 50 SWITCH SATURATION VOLTAGE (mV) 43 SCHOTTKY FORWARD CURRENT (mA) 100 0 42 0 0 200 400 600 800 1000 1200 –50 0 50 100 0 200 400 600 800 1000 SWITCH CURRENT (mA) TEMPERATURE (°C) SCHOTTKY FORWARD DROP (mV) 3473 G07 3473 G08 3473 G09
Schottky Forward Voltage Output Disconnect Voltage Drop Switching Frequency
550 400 1.4 ID = 100mA 90°C 350 25°C 1.2 500 300 –45°C 1.0 250 450 0.8 200 400 0.6 150 VOLTAGE DROP (mV) 0.4 100 350 SWITCHING FREQUENCY (MHz) SCHOTTKY FORWARD VOLTAGE (mV) 50 0.2 300 0 0 –50 0 50 100 0 20 40 60 80 100 0 5 10 15 TEMPERATURE (°C) COLLECTOR CURRENT (mA) INPUT VOLTAGE, VIN (V) 3473 G10 3473 G11 3473 G12 3473f 4