Datasheet LTC3619 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit |
| 页数 / 页 | 22 / 5 — Typical perForMance characTerisTics TA = 25°C, VIN = 5V, unless otherwise … |
| 文件格式/大小 | PDF / 512 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics TA = 25°C, VIN = 5V, unless otherwise noted. Efficiency vs Load Current
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LTC3619
Typical perForMance characTerisTics TA = 25°C, VIN = 5V, unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current
100 100 100 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 VIN = 2.7V VIN = 3.6V VIN = 3.6V VIN = 3.6V 10 VOUT = 3.3V VIN = 4.2V 10 VOUT = 3.3V VIN = 4.2V 10 VOUT = 1.2V VIN = 4.2V CHANNEL 1 V CHANNEL 2 V CHANNEL 1 V 0 IN = 5V 0 IN = 5V 0 IN = 5V 0.0001 0.001 0.01 0.1 1 0.0001 0.001 0.01 0.1 1 0.0001 0.001 0.01 0.1 1 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 3619 G10 3619 G11 3619 G12
Efficiency vs Load Current Load Regulation (Channel 1)
100 2.0 VOUT = 1.8V 90 1.5 VOUT = 2.5V 80 VOUT = 3.3V 1.0 70 60 0.5 50 0 ERROR (%) 40 EFFICIENCY (%) –0.5 30 V OUT –1.0 20 VIN = 2.7V VIN = 3.6V 10 V –1.5 OUT = 1.2V VIN = 4.2V CHANNEL 2 V 0 IN = 5V –2.0 0.0001 0.001 0.01 0.1 1 0 100 200 300 400 OUTPUT CURRENT (A) LOAD CURRENT (mA) 3619 G13 3619 G14
Load Regulation (Channel 2) Line Regulation
2.0 0.6 VOUT = 1.8V VOUT = 1.8V 1.5 VOUT = 2.5V ILOAD = 100mA VOUT = 3.3V 0.4 1.0 0.2 0.5 0 0 ERROR (%) ERROR (%) –0.5 V OUT V OUT –0.2 –1.0 –0.4 –1.5 –2.0 –0.6 0 200 400 600 800 2.5 3.0 3.5 4.0 4.5 5.0 5.5 LOAD CURRENT (mA) VIN (V) 3619 G15 3619 G16 3619fa 5 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Functional Diagram Operation Applications Information Package Description Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, VIN = 5V, unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current
100 100 100 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 VIN = 2.7V VIN = 3.6V VIN = 3.6V VIN = 3.6V 10 VOUT = 3.3V VIN = 4.2V 10 VOUT = 3.3V VIN = 4.2V 10 VOUT = 1.2V VIN = 4.2V CHANNEL 1 V CHANNEL 2 V CHANNEL 1 V 0 IN = 5V 0 IN = 5V 0 IN = 5V 0.0001 0.001 0.01 0.1 1 0.0001 0.001 0.01 0.1 1 0.0001 0.001 0.01 0.1 1 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 3619 G10 3619 G11 3619 G12
Efficiency vs Load Current Load Regulation (Channel 1)
100 2.0 VOUT = 1.8V 90 1.5 VOUT = 2.5V 80 VOUT = 3.3V 1.0 70 60 0.5 50 0 ERROR (%) 40 EFFICIENCY (%) –0.5 30 V OUT –1.0 20 VIN = 2.7V VIN = 3.6V 10 V –1.5 OUT = 1.2V VIN = 4.2V CHANNEL 2 V 0 IN = 5V –2.0 0.0001 0.001 0.01 0.1 1 0 100 200 300 400 OUTPUT CURRENT (A) LOAD CURRENT (mA) 3619 G13 3619 G14
Load Regulation (Channel 2) Line Regulation
2.0 0.6 VOUT = 1.8V VOUT = 1.8V 1.5 VOUT = 2.5V ILOAD = 100mA VOUT = 3.3V 0.4 1.0 0.2 0.5 0 0 ERROR (%) ERROR (%) –0.5 V OUT V OUT –0.2 –1.0 –0.4 –1.5 –2.0 –0.6 0 200 400 600 800 2.5 3.0 3.5 4.0 4.5 5.0 5.5 LOAD CURRENT (mA) VIN (V) 3619 G15 3619 G16 3619fa 5 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Functional Diagram Operation Applications Information Package Description Typical Application Related Parts