Datasheet LT8604 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | High Efficiency 42V/120mA Synchronous Buck |
| 页数 / 页 | 20 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency (5V Output). Efficiency … |
| 文件格式/大小 | PDF / 2.8 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency (5V Output). Efficiency (3.3V Output). FB Voltage. Load Regulation
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LT8604
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency (5V Output) Efficiency (5V Output) Efficiency (3.3V Output)
100 100 100 VIN = 12V 90 90 V 90 IN = 12V 80 VIN = 24V V 70 IN = 12V 80 VIN = 36V 80 V 60 IN = 24V V V IN = 36V IN = 36V 70 50 70 V 40 IN = 24V EFFICIENCY (%) 60 EFFICIENCY (%) EFFICIENCY (%) 60 30 20 50 50 L = 47µH L = 47µH 10 L = 33µH fSW = 2MHz fSW = 2MHz fSW = 2MHz 40 0 40 0 20 40 60 80 100 120 1µ 10µ 100µ 1m 10m 100m 0 20 40 60 80 100 120 OUTPUT CURRENT (mA) OUTPUT CURRENT (A) OUTPUT CURRENT (mA) 8604 G01 8604 G02 8604 G03
Efficiency (3.3V Output) FB Voltage Load Regulation
100 780 0.15 L = 33µH FRONT PAGE APPLICATION 90 fSW = 2MHz 80 779 0.10 70 V (%) 0.05 IN = 12V 60 TAGE (mV) 778 OUT 50 0.00 VIN = 36V 40 TION VOL 777 EFFICIENCY (%) VIN = 24V 30 –0.05 CHANGE IN V 20 776 FB REGULA –0.10 10 0 775 –0.15 1µ 10µ 100µ 1m 10m 100m –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 120 OUTPUT CURRENT (A) TEMPERATURE (°C) OUTPUT CURRENT (mA) 8604 G04 8604 G05 8604 G06
Line Regulation No-Load Supply Current
0.20 5.0 VOUT = 3.3V VOUT = 3.3V I 0.15 OUT = 40mA R1 = 309kΩ 4.5 R2 = 1MΩ 0.10 4.0 (%) 0.05 3.5 OUT 0 3.0 –0.05 2.5 CHANGE IN V INPUT CURRENT (µA) –0.01 2.0 –0.15 1.5 –0.20 1.0 0 6 12 18 24 30 36 42 0 6 12 18 24 30 36 42 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 8604 G07 8604 G08 Rev. 0 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 Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency (5V Output) Efficiency (5V Output) Efficiency (3.3V Output)
100 100 100 VIN = 12V 90 90 V 90 IN = 12V 80 VIN = 24V V 70 IN = 12V 80 VIN = 36V 80 V 60 IN = 24V V V IN = 36V IN = 36V 70 50 70 V 40 IN = 24V EFFICIENCY (%) 60 EFFICIENCY (%) EFFICIENCY (%) 60 30 20 50 50 L = 47µH L = 47µH 10 L = 33µH fSW = 2MHz fSW = 2MHz fSW = 2MHz 40 0 40 0 20 40 60 80 100 120 1µ 10µ 100µ 1m 10m 100m 0 20 40 60 80 100 120 OUTPUT CURRENT (mA) OUTPUT CURRENT (A) OUTPUT CURRENT (mA) 8604 G01 8604 G02 8604 G03
Efficiency (3.3V Output) FB Voltage Load Regulation
100 780 0.15 L = 33µH FRONT PAGE APPLICATION 90 fSW = 2MHz 80 779 0.10 70 V (%) 0.05 IN = 12V 60 TAGE (mV) 778 OUT 50 0.00 VIN = 36V 40 TION VOL 777 EFFICIENCY (%) VIN = 24V 30 –0.05 CHANGE IN V 20 776 FB REGULA –0.10 10 0 775 –0.15 1µ 10µ 100µ 1m 10m 100m –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 120 OUTPUT CURRENT (A) TEMPERATURE (°C) OUTPUT CURRENT (mA) 8604 G04 8604 G05 8604 G06
Line Regulation No-Load Supply Current
0.20 5.0 VOUT = 3.3V VOUT = 3.3V I 0.15 OUT = 40mA R1 = 309kΩ 4.5 R2 = 1MΩ 0.10 4.0 (%) 0.05 3.5 OUT 0 3.0 –0.05 2.5 CHANGE IN V INPUT CURRENT (µA) –0.01 2.0 –0.15 1.5 –0.20 1.0 0 6 12 18 24 30 36 42 0 6 12 18 24 30 36 42 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 8604 G07 8604 G08 Rev. 0 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 Typical Application Related Parts