Datasheet LT3470A (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Micropower Buck Regulator with Integrated Boost and Catch Diodes |
| 页数 / 页 | 20 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| 修订版 | C |
| 文件格式/大小 | PDF / 747 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Efficiency, VOUT = 3.3V. Efficiency, VOUT = 5V
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LT3470A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V VFB vs Temperature
90 90 1.260 L = TOKO D52LC 47µH L = TOKO D52LC 47µH TA = 25°C VIN = 7V TA = 25°C VIN = 12V 80 VIN = 12V 80 1.255 70 70 VIN = 36V VIN = 24V V V 60 IN = 24V IN = 36V (V) 60 1.250 V FB EFFICIENCY (%) 50 EFFICIENCY (%) 50 1.245 40 40 30 30 1.240 0.1 1 10 100 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3470a G01 3470a G02 3470a G03
Top and Bottom Switch Current VIN Quiescent Current Limits (VFB = 0V) vs Temperature vs Temperature
600 50 550 40 500 BIAS < 3V 450 30 400 350 CURRENT (µA) 20 CURRENT LIMIT (mA) V IN 300 10 BIAS > 3V 250 200 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G04 3470a G05
BIAS Quiescent Current SHDN Bias Current (Bias > 3V) vs Temperature vs Temperature
30 9 8 VSHDN = 36V 25 7 20 6 5 15 CURRENT (µA) 4 BIAS CURRENT (µA) 10 3 SHDN 2 V 5 SHDN = 2.5V 1 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G06 3470a G07 Rev. C 4 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 Block Diagram Operation Applications Information Typical Applications Package Description Revision History related parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V VFB vs Temperature
90 90 1.260 L = TOKO D52LC 47µH L = TOKO D52LC 47µH TA = 25°C VIN = 7V TA = 25°C VIN = 12V 80 VIN = 12V 80 1.255 70 70 VIN = 36V VIN = 24V V V 60 IN = 24V IN = 36V (V) 60 1.250 V FB EFFICIENCY (%) 50 EFFICIENCY (%) 50 1.245 40 40 30 30 1.240 0.1 1 10 100 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3470a G01 3470a G02 3470a G03
Top and Bottom Switch Current VIN Quiescent Current Limits (VFB = 0V) vs Temperature vs Temperature
600 50 550 40 500 BIAS < 3V 450 30 400 350 CURRENT (µA) 20 CURRENT LIMIT (mA) V IN 300 10 BIAS > 3V 250 200 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G04 3470a G05
BIAS Quiescent Current SHDN Bias Current (Bias > 3V) vs Temperature vs Temperature
30 9 8 VSHDN = 36V 25 7 20 6 5 15 CURRENT (µA) 4 BIAS CURRENT (µA) 10 3 SHDN 2 V 5 SHDN = 2.5V 1 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G06 3470a G07 Rev. C 4 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 Block Diagram Operation Applications Information Typical Applications Package Description Revision History related parts