Datasheet LTC3619B (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | 400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit |
| Seiten / Seite | 20 / 5 — Typical perForMance characTerisTics TA = 25°C, VIN = 5V, unless otherwise … |
| Dateiformat / Größe | PDF / 519 Kb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics TA = 25°C, VIN = 5V, unless otherwise noted. Efficiency vs Load Current
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LTC3619B
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 V VOUT = 3.3V VOUT = 1.2V 90 OUT = 3.3V CHANNEL 1 90 CHANNEL 2 90 CHANNEL 1 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 V 20 IN = 2.7V V 20 20 IN = 3.6V VIN = 3.6V VIN = 3.6V 10 VIN = 4.2V 10 VIN = 4.2V 10 VIN = 4.2V VIN = 5V VIN = 5V VIN = 5V 0 0 0 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) 3619B G10 3619B G11 3619B G12
Efficiency vs Load Current Load Regulation Load Regulation
100 3.0 3.0 VOUT = 1.2V CHANNEL 1 CHANNEL 2 90 CHANNEL 2 2.5 2.5 80 2.0 2.0 70 60 1.5 1.5 50 1.0 1.0 ERROR (%) ERROR (%) 40 EFFICIENCY (%) 0.5 0.5 V OUT 30 V OUT V 0 0 20 IN = 2.7V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V 10 VIN = 4.2V –0.5 V –0.5 OUT = 2.5V V V OUT = 2.5V IN = 5V V V 0 –1.0 OUT = 3.3V –1.0 OUT = 3.3V 0.0001 0.001 0.01 0.1 1 0 100 200 300 400 0 100 200 300 400 500 600 700 800 OUTPUT CURRENT (A) LOAD CURRENT (mA) LOAD CURRENT (mA) 3619B G13 3619B G14 3619B G15
Line Regulation Start-Up from Shutdown Start-Up from Shutdown
0.6 VOUT = 1.8V I RUN RUN LOAD = 100mA 0.4 2V/DIV 2V/DIV VOUT 0.2 2V/DIV VOUT R 0 1V/DIV LIM 1V/DIV ERROR (%) V OUT –0.2 IL I 250mA/DIV IN 500mA/DIV CHANNEL 2 –0.4 3619B G17 200µs/DIV 3619B G18 2ms/DIV VIN = 5V, VOUT = 3.3V VIN = 5V, VOUT = 3.4V –0.6 R R 2.5 3.0 3.5 4.0 4.5 5.0 5.5 LOAD = 7Ω L = NO LOAD, CL = 4.4mF CLOAD = 4.7µF CLIM = 2200pF, ILIM = 500mA VIN (V) 3619B G16 3619bfb 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Applications 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 V VOUT = 3.3V VOUT = 1.2V 90 OUT = 3.3V CHANNEL 1 90 CHANNEL 2 90 CHANNEL 1 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 V 20 IN = 2.7V V 20 20 IN = 3.6V VIN = 3.6V VIN = 3.6V 10 VIN = 4.2V 10 VIN = 4.2V 10 VIN = 4.2V VIN = 5V VIN = 5V VIN = 5V 0 0 0 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) 3619B G10 3619B G11 3619B G12
Efficiency vs Load Current Load Regulation Load Regulation
100 3.0 3.0 VOUT = 1.2V CHANNEL 1 CHANNEL 2 90 CHANNEL 2 2.5 2.5 80 2.0 2.0 70 60 1.5 1.5 50 1.0 1.0 ERROR (%) ERROR (%) 40 EFFICIENCY (%) 0.5 0.5 V OUT 30 V OUT V 0 0 20 IN = 2.7V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V 10 VIN = 4.2V –0.5 V –0.5 OUT = 2.5V V V OUT = 2.5V IN = 5V V V 0 –1.0 OUT = 3.3V –1.0 OUT = 3.3V 0.0001 0.001 0.01 0.1 1 0 100 200 300 400 0 100 200 300 400 500 600 700 800 OUTPUT CURRENT (A) LOAD CURRENT (mA) LOAD CURRENT (mA) 3619B G13 3619B G14 3619B G15
Line Regulation Start-Up from Shutdown Start-Up from Shutdown
0.6 VOUT = 1.8V I RUN RUN LOAD = 100mA 0.4 2V/DIV 2V/DIV VOUT 0.2 2V/DIV VOUT R 0 1V/DIV LIM 1V/DIV ERROR (%) V OUT –0.2 IL I 250mA/DIV IN 500mA/DIV CHANNEL 2 –0.4 3619B G17 200µs/DIV 3619B G18 2ms/DIV VIN = 5V, VOUT = 3.3V VIN = 5V, VOUT = 3.4V –0.6 R R 2.5 3.0 3.5 4.0 4.5 5.0 5.5 LOAD = 7Ω L = NO LOAD, CL = 4.4mF CLOAD = 4.7µF CLIM = 2200pF, ILIM = 500mA VIN (V) 3619B G16 3619bfb 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Applications Related Parts