Datasheet LTC1735 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | High Efficiency Synchronous Step-Down Switching Regulator |
| Páginas / Página | 32 / 6 — TYPICAL PERFOR A CE CHARACTERISTICS. SENSE Pins Total Source Current. … |
| Formato / tamaño de archivo | PDF / 415 Kb |
| Idioma del documento | Inglés |
TYPICAL PERFOR A CE CHARACTERISTICS. SENSE Pins Total Source Current. Output Current vs Duty Cycle
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Versión de texto del documento
LTC1735
W U TYPICAL PERFOR A CE CHARACTERISTICS SENSE Pins Total Source Current I Output Current vs Duty Cycle TH Voltage vs Load Current
100 2.5 100 VIN = 10V (%) IOUT/IMAX (SYNC) VOUT = 3.3V I RSENSE = 0.01Ω MAX OUT/IMAX 2.0 /I 80 (FREE RUN) 50 fO = 300kHz OUT 1.5 CONTINUOUS 60 µA) ( MODE 0 SYNCHRONIZED f = fO I SENSE VOLTAGE (V) 1.0 40 I TH Burst Mode –50 OPERATION 0.5 20 AVERAGE OUTPUT CURRENT I fSYNC = fO –100 0 0 0 2 4 6 0 1 2 3 4 5 6 0 20 40 60 80 100 V LOAD CURRENT (A) DUTY CYCLE (%) SENSE COMMON MODE VOLTAGE (V) 1735 G16 1735 G17 1735 G14
Oscillator Frequency RUN/SS Pin Current vs Temperature vs Temperature FCB Pin Current vs Temperature
300 0 0 COSC = 47pF VRUN/SS = 0V VFCB = 0.85V 290 –1 –0.2 µA) µA) 280 –2 –0.4 270 –3 –0.6 FREQUENCY (kHz) FCB CURRENT ( RUN/SS CURRENT ( 260 –4 –0.8 250 –5 –1.0 –40 –15 10 35 60 85 110 135 –40 –15 10 35 60 85 110 135 –40 –15 10 35 60 85 110 135 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1735 G19 1735 G20 1735 G21
Supply Current in Shutdown Supply Current in Shutdown vs VRUN/SS vs Temperature
100 30 90 25 80 µA) 70 µA) 20 60 50 15 40 10 30 SUPPLY CURRENT ( SUPPLY CURRENT ( 20 5 10 0 0 0 0.5 1 1.5 2 –50 0 50 100 150 VRUN/SS TEMPERATURE (°C) 1735 G28 1735 G29 1735fc 6
W U TYPICAL PERFOR A CE CHARACTERISTICS SENSE Pins Total Source Current I Output Current vs Duty Cycle TH Voltage vs Load Current
100 2.5 100 VIN = 10V (%) IOUT/IMAX (SYNC) VOUT = 3.3V I RSENSE = 0.01Ω MAX OUT/IMAX 2.0 /I 80 (FREE RUN) 50 fO = 300kHz OUT 1.5 CONTINUOUS 60 µA) ( MODE 0 SYNCHRONIZED f = fO I SENSE VOLTAGE (V) 1.0 40 I TH Burst Mode –50 OPERATION 0.5 20 AVERAGE OUTPUT CURRENT I fSYNC = fO –100 0 0 0 2 4 6 0 1 2 3 4 5 6 0 20 40 60 80 100 V LOAD CURRENT (A) DUTY CYCLE (%) SENSE COMMON MODE VOLTAGE (V) 1735 G16 1735 G17 1735 G14
Oscillator Frequency RUN/SS Pin Current vs Temperature vs Temperature FCB Pin Current vs Temperature
300 0 0 COSC = 47pF VRUN/SS = 0V VFCB = 0.85V 290 –1 –0.2 µA) µA) 280 –2 –0.4 270 –3 –0.6 FREQUENCY (kHz) FCB CURRENT ( RUN/SS CURRENT ( 260 –4 –0.8 250 –5 –1.0 –40 –15 10 35 60 85 110 135 –40 –15 10 35 60 85 110 135 –40 –15 10 35 60 85 110 135 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1735 G19 1735 G20 1735 G21
Supply Current in Shutdown Supply Current in Shutdown vs VRUN/SS vs Temperature
100 30 90 25 80 µA) 70 µA) 20 60 50 15 40 10 30 SUPPLY CURRENT ( SUPPLY CURRENT ( 20 5 10 0 0 0 0.5 1 1.5 2 –50 0 50 100 150 VRUN/SS TEMPERATURE (°C) 1735 G28 1735 G29 1735fc 6