Datasheet LTC3809 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | No RSENSE , Low EMI, Synchronous DC/DC Controller |
| 页数 / 页 | 24 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| 文件格式/大小 | PDF / 298 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Regulated Feedback Voltage
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LTC3809
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Regulated Feedback Voltage Undervoltage Lockout Threshold Shutdown (RUN) Threshold vs Temperature vs Temperature vs Temperature
0.606 2.55 1.20 2.50 0.604 VIN RISING 2.45 1.15 0.602 2.40 TAGE (V) TAGE (V) 0.600 2.35 TAGE (V) 1.10 2.30 0.598 INPUT VOL V RUN VOL IN FALLING FEEDBACK VOL 2.25 1.05 0.596 2.20 0.594 2.15 1.00 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3809 G08 3809 G09 3809 G10
Maximum Current Sense SYNC/MODE Pull-Down Current Oscillator Frequency Threshold vs Temperature vs Temperature vs Temperature
135 2.80 10 IPRG = FLOAT 8 2.75 6 130 2.70 4 2.65 2 125 2.60 0 –2 2.55 –4 120 2.50 –6 NORMALIZED FREQUENCY (%) 2.45 SYNC/MODE PULL-DOWN CURRENT (μA) –8 MAXIMUM CURRENT SENSE THRESHOLD (mV) 115 2.40 –10 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3809 G11 3809 G12 3809 G13
Oscillator Frequency Shutdown Quiescent Current vs Input Voltage vs Input Voltage Sleep Current vs Input Voltage
5 18 130 4 16 120 T (%) 3 14 2 12 110 1 10 0 100 8 –1 6 90 –2 SLEEP CURRENT (μA) –3 SHUTDOWN CURRENT (μA) 4 80 NORMALIZED FREQUENCY SHIF –4 2 –5 0 70 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3809 G14 3809 G15 3809 G16 3809fc 5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Regulated Feedback Voltage Undervoltage Lockout Threshold Shutdown (RUN) Threshold vs Temperature vs Temperature vs Temperature
0.606 2.55 1.20 2.50 0.604 VIN RISING 2.45 1.15 0.602 2.40 TAGE (V) TAGE (V) 0.600 2.35 TAGE (V) 1.10 2.30 0.598 INPUT VOL V RUN VOL IN FALLING FEEDBACK VOL 2.25 1.05 0.596 2.20 0.594 2.15 1.00 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3809 G08 3809 G09 3809 G10
Maximum Current Sense SYNC/MODE Pull-Down Current Oscillator Frequency Threshold vs Temperature vs Temperature vs Temperature
135 2.80 10 IPRG = FLOAT 8 2.75 6 130 2.70 4 2.65 2 125 2.60 0 –2 2.55 –4 120 2.50 –6 NORMALIZED FREQUENCY (%) 2.45 SYNC/MODE PULL-DOWN CURRENT (μA) –8 MAXIMUM CURRENT SENSE THRESHOLD (mV) 115 2.40 –10 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3809 G11 3809 G12 3809 G13
Oscillator Frequency Shutdown Quiescent Current vs Input Voltage vs Input Voltage Sleep Current vs Input Voltage
5 18 130 4 16 120 T (%) 3 14 2 12 110 1 10 0 100 8 –1 6 90 –2 SLEEP CURRENT (μA) –3 SHUTDOWN CURRENT (μA) 4 80 NORMALIZED FREQUENCY SHIF –4 2 –5 0 70 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3809 G14 3809 G15 3809 G16 3809fc 5