Datasheet LT3430, LT3430-1 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | High Voltage, 3A, 200kHz/100kHz Step-Down Switching Regulators |
| 页数 / 页 | 28 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Minimum Input Voltage with. … |
| 文件格式/大小 | PDF / 335 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Minimum Input Voltage with. Switching Frequency. 5V Output. BOOST Pin Current
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LT3430/LT3430-1
TYPICAL PERFORMANCE CHARACTERISTICS Minimum Input Voltage with Switching Frequency 5V Output BOOST Pin Current
230 7.5 90 (LT3430) TA = 25°C TA = 25°C 80 220 7.0 70 210 60 6.5 MINIMUM INPUT 50 200 VOLTAGE TO START 40 6.0 FREQUENCY (kHz) 190 INPUT VOLTAGE (V) 30 BOOST PIN CURRENT (mA) 5.5 MINIMUM INPUT 20 180 VOLTAGE TO RUN 10 170 5.0 0 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 1 2 3 JUNCTION TEMPERATURE (°C) LOAD CURRENT (A) SWITCH CURRENT (A) 3430 G10 3430 G11 3430 G12
VC Pin Shutdown Threshold Switch Voltage Drop
2.1 450 1.9 400 TJ = 125°C 350 1.7 300 TJ = 25°C 1.5 250 1.3 200 150 1.1 T THRESHOLD VOLTAGE (V) SWITCH VOLTAGE (mV) J = –40°C 100 0.9 50 0.7 0 –50 –25 0 25 50 75 100 125 0 1 2 3 JUNCTION TEMPERATURE (°C) SWITCH CURRENT (A) 3430 G13 3430 G14
Switch Minimum ON Time Switch Peak Current Limit vs Temperature
6.0 600 5.5 500 5.0 400 4.5 300 4.0 200 3.5 SWITCH MINIMUM ON TIME (ns) 100 SWITCH PEAK CURRENT LIMIT (A) 3.0 2.5 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 3430 G16 3430 G15 34301fa 5
TYPICAL PERFORMANCE CHARACTERISTICS Minimum Input Voltage with Switching Frequency 5V Output BOOST Pin Current
230 7.5 90 (LT3430) TA = 25°C TA = 25°C 80 220 7.0 70 210 60 6.5 MINIMUM INPUT 50 200 VOLTAGE TO START 40 6.0 FREQUENCY (kHz) 190 INPUT VOLTAGE (V) 30 BOOST PIN CURRENT (mA) 5.5 MINIMUM INPUT 20 180 VOLTAGE TO RUN 10 170 5.0 0 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 1 2 3 JUNCTION TEMPERATURE (°C) LOAD CURRENT (A) SWITCH CURRENT (A) 3430 G10 3430 G11 3430 G12
VC Pin Shutdown Threshold Switch Voltage Drop
2.1 450 1.9 400 TJ = 125°C 350 1.7 300 TJ = 25°C 1.5 250 1.3 200 150 1.1 T THRESHOLD VOLTAGE (V) SWITCH VOLTAGE (mV) J = –40°C 100 0.9 50 0.7 0 –50 –25 0 25 50 75 100 125 0 1 2 3 JUNCTION TEMPERATURE (°C) SWITCH CURRENT (A) 3430 G13 3430 G14
Switch Minimum ON Time Switch Peak Current Limit vs Temperature
6.0 600 5.5 500 5.0 400 4.5 300 4.0 200 3.5 SWITCH MINIMUM ON TIME (ns) 100 SWITCH PEAK CURRENT LIMIT (A) 3.0 2.5 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 3430 G16 3430 G15 34301fa 5