Datasheet LTC3411A (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter |
| 页数 / 页 | 22 / 4 — Typical perForMance characTerisTics. TA = 25°C, VIN = 3.6V, fO = 1MHz, … |
| 文件格式/大小 | PDF / 1.5 Mb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics. TA = 25°C, VIN = 3.6V, fO = 1MHz, unless. otherwise noted. Efficiency vs Input Voltage
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LTC3411A
Typical perForMance characTerisTics TA = 25°C, VIN = 3.6V, fO = 1MHz, unless otherwise noted. Efficiency vs Input Voltage Efficiency vs Output Current Efficiency vs Output Current
100 100 100 IOUT = 100mA IOUT = 10mA 90 90 90 80 80 80 70 70 IOUT = 1.25A IOUT = 1mA 70 60 60 50 50 60 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 50 I 30 30 OUT = 0.1mA 20 VIN = 2.7V 20 VIN = 2.7V 40 VIN = 3.6V VIN = 3.6V V 10 V 10 V OUT = 1.8V IN = 4.2V V IN = 4.2V OUT = 1.8V VOUT = 1.5V 30 0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.1 1 10 100 1000 10000 0.1 1 10 100 1000 10000 INPUT VOLTAGE(V) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3411A G01 3411A G02 3411A G03
Efficiency vs Output Current Efficiency vs Frequency Load Regulation
100 95 1.00 Burst Mode 90 OPERATION 4.7µH 94 80 0.75 70 PULSE 93 SKIP 2.2µH 0.50 60 92 Burst Mode OPERATION 50 0.25 FORCED CONTINUOUS ERROR (%) 40 91 PULSE SKIP EFFICIENCY (%) EFFICIENCY (%) V OUT 30 0.00 90 1µH FORCED CONTINUOUS 20 89 –0.25 10 VOUT = 1.8V V I VOUT = 1.8V OUT = 1.8V LOAD = 400mA 0 88 –0.50 0.1 1 10 100 1000 10000 0 1 2 3 4 5 0 200 400 600 800 1000 1200 1400 OUTPUT CURRENT (mA) FREQUENCY (MHz) OUTPUT CURRENT(mA) 3411A G04 3411A G05 3411A G06
Reference Voltage vs Frequency Variation vs Line Regulation Temperature Temperature
0.6 815 6 VIN = 3.6V 0.4 810 4 0.2 805 2 TION (%) TAGE (mV) 0.0 ARIA 800 0 ERROR (%) V OUT –0.2 795 –2 REFERENCE VOL FREQUENCY V –0.4 790 –4 VOUT = 1.8V ILOAD = 400mA –0.6 785 –6 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE(V) TEMPERATURE(°C) TEMPERATURE(°C) 3411A G07 3411A G08 3411A G09 3411afd 4 For more information www.linear.com/LTC3411A Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, VIN = 3.6V, fO = 1MHz, unless otherwise noted. Efficiency vs Input Voltage Efficiency vs Output Current Efficiency vs Output Current
100 100 100 IOUT = 100mA IOUT = 10mA 90 90 90 80 80 80 70 70 IOUT = 1.25A IOUT = 1mA 70 60 60 50 50 60 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 50 I 30 30 OUT = 0.1mA 20 VIN = 2.7V 20 VIN = 2.7V 40 VIN = 3.6V VIN = 3.6V V 10 V 10 V OUT = 1.8V IN = 4.2V V IN = 4.2V OUT = 1.8V VOUT = 1.5V 30 0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.1 1 10 100 1000 10000 0.1 1 10 100 1000 10000 INPUT VOLTAGE(V) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3411A G01 3411A G02 3411A G03
Efficiency vs Output Current Efficiency vs Frequency Load Regulation
100 95 1.00 Burst Mode 90 OPERATION 4.7µH 94 80 0.75 70 PULSE 93 SKIP 2.2µH 0.50 60 92 Burst Mode OPERATION 50 0.25 FORCED CONTINUOUS ERROR (%) 40 91 PULSE SKIP EFFICIENCY (%) EFFICIENCY (%) V OUT 30 0.00 90 1µH FORCED CONTINUOUS 20 89 –0.25 10 VOUT = 1.8V V I VOUT = 1.8V OUT = 1.8V LOAD = 400mA 0 88 –0.50 0.1 1 10 100 1000 10000 0 1 2 3 4 5 0 200 400 600 800 1000 1200 1400 OUTPUT CURRENT (mA) FREQUENCY (MHz) OUTPUT CURRENT(mA) 3411A G04 3411A G05 3411A G06
Reference Voltage vs Frequency Variation vs Line Regulation Temperature Temperature
0.6 815 6 VIN = 3.6V 0.4 810 4 0.2 805 2 TION (%) TAGE (mV) 0.0 ARIA 800 0 ERROR (%) V OUT –0.2 795 –2 REFERENCE VOL FREQUENCY V –0.4 790 –4 VOUT = 1.8V ILOAD = 400mA –0.6 785 –6 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE(V) TEMPERATURE(°C) TEMPERATURE(°C) 3411A G07 3411A G08 3411A G09 3411afd 4 For more information www.linear.com/LTC3411A Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application Related Parts