Datasheet LT3844 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | High Voltage, Current Mode Switching Regulator Controller with Programmable Operating Frequency |
| 页数 / 页 | 26 / 4 — Typical perForMance characTerisTics. Shutdown Threshold (Rising). … |
| 文件格式/大小 | PDF / 292 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics. Shutdown Threshold (Rising). Shutdown Threshold (Falling). vs Temperature
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LT3844
Typical perForMance characTerisTics Shutdown Threshold (Rising) Shutdown Threshold (Falling) vs Temperature vs Temperature VCC vs Temperature
1.38 1.26 8.2 ICC = 20mA 1.37 1.25 8.1 8.0 1.36 1.24 7.9 1.35 1.23 (V) V CC 7.8 1.34 1.22 7.7 1.33 1.21 SHUTDOWN THRESHOLD, RISING (V) 7.6 SHUTDOWN THRESHOLD, FALLING (V) 1.32 1.20 7.5 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3844 G01 3844 G02 3844 G03
VCC vs ICC(LOAD) VCC vs VIN ICC Current Limit vs Temperature
8.05 9 I 200 T CC = 20mA A = 25°C TA = 25°C 8 175 8.00 7 150 (V) (V) 7.95 6 125 V CC V CC 5 100 CURRENT LIMIT (mA) 7.90 I CC 4 75 7.85 3 50 0 5 10 15 20 25 30 35 40 4 5 6 7 8 9 10 11 12 –50 –25 0 25 50 75 100 125 I V CC(LOAD) (mA) IN (V) TEMPERATURE (°C) 3844 G05 3844 G04 3844 G06
VCC UVLO Threshold (Rising) Error Amp Transconductance vs Temperature ICC vs VCC (SHDN = 0V) vs Temperature
6.5 25 350 TA = 25°C 6.4 345 20 340 6.3 15 (mA) 335 6.2 I CC 10 330 UVLO THRESHOLD, RISING (V) 6.1 5 V CC 325 ERROR AMP TRANSCONDUCTANCE (µS) 6.0 0 320 –50 –25 0 25 50 75 100 125 0 2 4 6 8 10 12 14 16 18 20 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) VCC (V) TEMPERATURE (°C) 3844 G07 3844 G08 3844 G09 3844fc 4 For more information www.linear.com/LT3844 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
Typical perForMance characTerisTics Shutdown Threshold (Rising) Shutdown Threshold (Falling) vs Temperature vs Temperature VCC vs Temperature
1.38 1.26 8.2 ICC = 20mA 1.37 1.25 8.1 8.0 1.36 1.24 7.9 1.35 1.23 (V) V CC 7.8 1.34 1.22 7.7 1.33 1.21 SHUTDOWN THRESHOLD, RISING (V) 7.6 SHUTDOWN THRESHOLD, FALLING (V) 1.32 1.20 7.5 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3844 G01 3844 G02 3844 G03
VCC vs ICC(LOAD) VCC vs VIN ICC Current Limit vs Temperature
8.05 9 I 200 T CC = 20mA A = 25°C TA = 25°C 8 175 8.00 7 150 (V) (V) 7.95 6 125 V CC V CC 5 100 CURRENT LIMIT (mA) 7.90 I CC 4 75 7.85 3 50 0 5 10 15 20 25 30 35 40 4 5 6 7 8 9 10 11 12 –50 –25 0 25 50 75 100 125 I V CC(LOAD) (mA) IN (V) TEMPERATURE (°C) 3844 G05 3844 G04 3844 G06
VCC UVLO Threshold (Rising) Error Amp Transconductance vs Temperature ICC vs VCC (SHDN = 0V) vs Temperature
6.5 25 350 TA = 25°C 6.4 345 20 340 6.3 15 (mA) 335 6.2 I CC 10 330 UVLO THRESHOLD, RISING (V) 6.1 5 V CC 325 ERROR AMP TRANSCONDUCTANCE (µS) 6.0 0 320 –50 –25 0 25 50 75 100 125 0 2 4 6 8 10 12 14 16 18 20 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) VCC (V) TEMPERATURE (°C) 3844 G07 3844 G08 3844 G09 3844fc 4 For more information www.linear.com/LT3844 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts