Datasheet LTC3822 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | No RSENSE , Low Input Voltage, Synchronous Step-Down DC/DC Controller |
| 页数 / 页 | 20 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| 文件格式/大小 | PDF / 209 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Regulated Feedback Voltage
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LTC3822
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Regulated Feedback Voltage Undervoltage Lockout Threshold Shutdown (RUN) Threshold vs Temperature vs Temperature vs Temperature
0.604 2.55 1.20 0.603 2.50 VIN RISING 0.602 2.45 1.15 0.601 2.40 TAGE (V) TAGE (V) 0.600 2.35 TAGE (V) 1.10 0.599 2.30 INPUT VOL V RUN VOL IN FALLING FEEDBACK VOL 0.598 2.25 1.05 0.597 2.20 0.596 2.15 1.00 –50 0 50 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3822 G06 3822 G07 3822 G08
Maximum Current Sense Oscillator Frequency Oscillator Frequency Threshold vs Temperature vs Temperature vs Input Voltage
130 10 5 IPRG = FLOAT 8 4 T (%) 6 T (%) 3 125 4 2 2 1 120 0 0 –2 –1 –4 –2 115 –6 –3 NORMALIZED FREQUENCY SHIF –8 NORMALIZED FREQUENCY SHIF –4 MAXIMUM CURRENT SENSE THRESHOLD (mV) 110 –10 –5 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 2.5 3.0 3.5 4.0 4.5 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3822 G09 3822 G10 3822 G11
Shutdown Quiescent Current Quiescent Current in Normal vs Input Voltage Operation vs Input Voltage
18 370 16 360 14 12 350 10 340 8 6 330 SHUTDOWN CURRENT (μA) 4 QUIESCENT CURRENT (μA) 320 2 0 310 2.5 3.0 3.5 4.0 4.5 2.6 3.6 4.6 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3822 G12 3822 G13 3822fa 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
0.604 2.55 1.20 0.603 2.50 VIN RISING 0.602 2.45 1.15 0.601 2.40 TAGE (V) TAGE (V) 0.600 2.35 TAGE (V) 1.10 0.599 2.30 INPUT VOL V RUN VOL IN FALLING FEEDBACK VOL 0.598 2.25 1.05 0.597 2.20 0.596 2.15 1.00 –50 0 50 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3822 G06 3822 G07 3822 G08
Maximum Current Sense Oscillator Frequency Oscillator Frequency Threshold vs Temperature vs Temperature vs Input Voltage
130 10 5 IPRG = FLOAT 8 4 T (%) 6 T (%) 3 125 4 2 2 1 120 0 0 –2 –1 –4 –2 115 –6 –3 NORMALIZED FREQUENCY SHIF –8 NORMALIZED FREQUENCY SHIF –4 MAXIMUM CURRENT SENSE THRESHOLD (mV) 110 –10 –5 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 2.5 3.0 3.5 4.0 4.5 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3822 G09 3822 G10 3822 G11
Shutdown Quiescent Current Quiescent Current in Normal vs Input Voltage Operation vs Input Voltage
18 370 16 360 14 12 350 10 340 8 6 330 SHUTDOWN CURRENT (μA) 4 QUIESCENT CURRENT (μA) 320 2 0 310 2.5 3.0 3.5 4.0 4.5 2.6 3.6 4.6 INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3822 G12 3822 G13 3822fa 5