Datasheet LTC3854 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | Small Footprint, Wide VIN Range Synchronous Step-Down DC/DC Controller |
| Páginas / Página | 28 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Oscillator Frequency. Undervoltage … |
| Formato / tamaño de archivo | PDF / 547 Kb |
| Idioma del documento | Inglés |
TYPICAL PERFORMANCE CHARACTERISTICS. Oscillator Frequency. Undervoltage Lockout Falling. vs Temperature
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Versión de texto del documento
LTC3854
TYPICAL PERFORMANCE CHARACTERISTICS Oscillator Frequency Undervoltage Lockout Falling vs Temperature Threshold vs Temperature Oscillator Frequency vs VIN
440 4.0 440 3.9 430 430 3.8 420 420 3.7 3.6 410 410 3.5 400 UVLO (V) 3.4 390 FREQUENCY (kHz) 400 3.3 FREQUENCY (kHz) 380 390 3.2 3.1 370 380 3.0 360 –40 –20 0 20 40 60 80 100 120 –40 –20 0 20 40 60 80 100 120 5 10 15 20 25 30 35 40 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3854 G15 3854 G16 3854 G17
Current Sense Threshold Shutdown Current vs ITH Voltage vs Input Voltage Shutdown Current vs Temperature
60 30 20 VIN = 15V 19 50 25 18 40 17 20 30 16 15 15 20 14 10 10 13 SHUTDOWN CURRENT (µA) SHUTDOWN CURRENT (µA) 12 5 CURRENT SENSE THRESHOLD (mV) 0 11 –10 0 10 0 0.5 1 1.5 2 2.5 3 4 8 12 16 20 24 28 32 36 40 –45 –30 –15 0 15 30 45 60 75 90 105 VITH (V) VIN (V) TEMPERATURE (°C) 3854 G18 3854 G19 3854 G20
RUN/SS Shutdown Threshold INTVCC Load Regulation INTVCC vs Temperature vs Temperature
5.20 5.20 1.40 VIN = 15V ILOAD = 10mA 5.15 5.15 VIN = 15V 1.35 5.10 5.10 1.30 5.05 5.05 (V) (V) V CC 5.00 V CC 5.00 1.25 INT 4.95 INT 4.95 RUN/SS (V) 1.20 4.90 4.90 1.15 4.85 4.85 4.80 4.80 1.10 0 5 10 15 20 25 30 35 40 –45 –30 –15 0 15 30 45 60 75 90 105 –45 –30 –15 0 15 30 45 60 75 90 105 LDO CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3854 G21 3854 G22 3854 G23 3854fb 6 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Oscillator Frequency Undervoltage Lockout Falling vs Temperature Threshold vs Temperature Oscillator Frequency vs VIN
440 4.0 440 3.9 430 430 3.8 420 420 3.7 3.6 410 410 3.5 400 UVLO (V) 3.4 390 FREQUENCY (kHz) 400 3.3 FREQUENCY (kHz) 380 390 3.2 3.1 370 380 3.0 360 –40 –20 0 20 40 60 80 100 120 –40 –20 0 20 40 60 80 100 120 5 10 15 20 25 30 35 40 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3854 G15 3854 G16 3854 G17
Current Sense Threshold Shutdown Current vs ITH Voltage vs Input Voltage Shutdown Current vs Temperature
60 30 20 VIN = 15V 19 50 25 18 40 17 20 30 16 15 15 20 14 10 10 13 SHUTDOWN CURRENT (µA) SHUTDOWN CURRENT (µA) 12 5 CURRENT SENSE THRESHOLD (mV) 0 11 –10 0 10 0 0.5 1 1.5 2 2.5 3 4 8 12 16 20 24 28 32 36 40 –45 –30 –15 0 15 30 45 60 75 90 105 VITH (V) VIN (V) TEMPERATURE (°C) 3854 G18 3854 G19 3854 G20
RUN/SS Shutdown Threshold INTVCC Load Regulation INTVCC vs Temperature vs Temperature
5.20 5.20 1.40 VIN = 15V ILOAD = 10mA 5.15 5.15 VIN = 15V 1.35 5.10 5.10 1.30 5.05 5.05 (V) (V) V CC 5.00 V CC 5.00 1.25 INT 4.95 INT 4.95 RUN/SS (V) 1.20 4.90 4.90 1.15 4.85 4.85 4.80 4.80 1.10 0 5 10 15 20 25 30 35 40 –45 –30 –15 0 15 30 45 60 75 90 105 –45 –30 –15 0 15 30 45 60 75 90 105 LDO CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3854 G21 3854 G22 3854 G23 3854fb 6 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts