Datasheet LT8494 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | SEPIC/Boost DC/DC Converter with 2A, 70V Switch, and 7μA Quiescent Current |
| 页数 / 页 | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specified. … |
| 文件格式/大小 | PDF / 615 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specified. Overvoltage Lockout. Internal UVLO
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LT8494
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specified. Overvoltage Lockout Internal UVLO PG Pin Current vs Supply Voltage
35.5 2.50 20 PG = 0.4V 18 35.0 16 V 2.45 IN = BIAS = SWEN 14 VIN OR BIAS RISING V TAGE (V) IN/BIAS RISING 34.5 12 TAGE (V) 2.40 10 VIN/BIAS FALLING 34.0 8 /BIAS VOL VIN = BIAS, SWEN = 0 OR BIAS VOL V IN 6 V IN VIN OR BIAS FALLING 2.35 PG PIN CURRENT (mA) 33.5 4 2 33.0 2.30 0 –50 0 50 100 150 –50 0 50 100 150 0 1 2 3 4 5 TEMPERATURE (°C) TEMPERATURE (°C) VIN VOLTAGE (V) 8494 G15 8494 G20 8494 G22
PG Output Voltage SWEN Pin Current FB Pin Current vs Supply Voltage
400 1000 10k PULL-UP FROM VIN TO PG 350 100 3 300 10 250 TAGE (V) 2 200 1 150 0.1 FB PIN CURRENT (µA) 1 SWEN PIN CURRENT (nA) 100 PG OUTPUT VOL 0.01 50 0 0.001 0 0 10 20 30 40 50 60 0 10 20 30 40 50 60 0 1 2 3 SWEN PIN VOLTAGE (V) FB VOLTAGE (V) VIN/BIAS VOLTAGE (V) 8494 G23 8494 G24 8494 G25
Pin Current Quiescent Current
60 VIN = 1.25V V 5 IN = 12V VSWEN = 1.2V VBIAS = VSWEN = 5V VFB = 1.25V 4 40 CURRENT INTO VIN 3 IFB 2 20 CURRENT INTO PIN (nA) ISWEN QUIESCENT CURRENT (µA) CURRENT INTO BIAS 1 0 0 –50 0 50 100 150 –50 0 50 100 150 TEMPERATURE (°C) TEMPERATURE (°C) 8494 G26 8494 G27 8494fa 6 For more information www.linear.com/LT8494 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specified. Overvoltage Lockout Internal UVLO PG Pin Current vs Supply Voltage
35.5 2.50 20 PG = 0.4V 18 35.0 16 V 2.45 IN = BIAS = SWEN 14 VIN OR BIAS RISING V TAGE (V) IN/BIAS RISING 34.5 12 TAGE (V) 2.40 10 VIN/BIAS FALLING 34.0 8 /BIAS VOL VIN = BIAS, SWEN = 0 OR BIAS VOL V IN 6 V IN VIN OR BIAS FALLING 2.35 PG PIN CURRENT (mA) 33.5 4 2 33.0 2.30 0 –50 0 50 100 150 –50 0 50 100 150 0 1 2 3 4 5 TEMPERATURE (°C) TEMPERATURE (°C) VIN VOLTAGE (V) 8494 G15 8494 G20 8494 G22
PG Output Voltage SWEN Pin Current FB Pin Current vs Supply Voltage
400 1000 10k PULL-UP FROM VIN TO PG 350 100 3 300 10 250 TAGE (V) 2 200 1 150 0.1 FB PIN CURRENT (µA) 1 SWEN PIN CURRENT (nA) 100 PG OUTPUT VOL 0.01 50 0 0.001 0 0 10 20 30 40 50 60 0 10 20 30 40 50 60 0 1 2 3 SWEN PIN VOLTAGE (V) FB VOLTAGE (V) VIN/BIAS VOLTAGE (V) 8494 G23 8494 G24 8494 G25
Pin Current Quiescent Current
60 VIN = 1.25V V 5 IN = 12V VSWEN = 1.2V VBIAS = VSWEN = 5V VFB = 1.25V 4 40 CURRENT INTO VIN 3 IFB 2 20 CURRENT INTO PIN (nA) ISWEN QUIESCENT CURRENT (µA) CURRENT INTO BIAS 1 0 0 –50 0 50 100 150 –50 0 50 100 150 TEMPERATURE (°C) TEMPERATURE (°C) 8494 G26 8494 G27 8494fa 6 For more information www.linear.com/LT8494 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts