Datasheet LT3434 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | High Voltage 3A, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current |
| 页数 / 页 | 24 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS. FB Voltage. Oscillator Frequency. … |
| 文件格式/大小 | PDF / 418 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS. FB Voltage. Oscillator Frequency. SHDN Threshold. SHDN Pin Current. Shutdown Supply Current
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LT3434
W U TYPICAL PERFOR A CE CHARACTERISTICS FB Voltage Oscillator Frequency SHDN Threshold
1.30 250 1.40 1.29 240 1.35 1.28 230 1.30 1.27 220 1.26 210 1.25 1.25 200 1.20 VOLTAGE (V) 1.24 190 VOLTAGE (V) 0.15 1.23 FREQUENCY (kHz) 180 1.10 1.22 170 1.21 160 1.05 1.20 150 1.00 –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) 3434 G01 3434 G02 3434 G03
SHDN Pin Current Shutdown Supply Current Sleep Mode Supply Current
5.5 25 200 TJ = 25°C 5.0 180 4.5 20 160 VBIAS = 0V VIN = 60V 4.0 140 µA) 3.5 µA) 15 µA) 120 3.0 100 2.5 10 80 CURRENT ( CURRENT ( CURRENT ( 2.0 60 VBIAS = 5V 1.5 5 40 V 1.0 IN = 42V VIN = 12V 20 0 0 0 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 SHDN VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3434 G04 3434 G05 3434 G06
Bias Sleep Current PGFB Threshold PG Sink Current
200 1.20 250 180 1.18 160 1.16 200 140 1.14 µA) 120 1.12 µA) 150 100 1.10 80 1.08 100 CURRENT ( VOLTAGE (V) CURRENT ( 60 1.06 40 1.04 50 20 1.02 0 1.00 0 –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) 3434 G07 3434 G08 3434 G09 3434fb 4
W U TYPICAL PERFOR A CE CHARACTERISTICS FB Voltage Oscillator Frequency SHDN Threshold
1.30 250 1.40 1.29 240 1.35 1.28 230 1.30 1.27 220 1.26 210 1.25 1.25 200 1.20 VOLTAGE (V) 1.24 190 VOLTAGE (V) 0.15 1.23 FREQUENCY (kHz) 180 1.10 1.22 170 1.21 160 1.05 1.20 150 1.00 –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) 3434 G01 3434 G02 3434 G03
SHDN Pin Current Shutdown Supply Current Sleep Mode Supply Current
5.5 25 200 TJ = 25°C 5.0 180 4.5 20 160 VBIAS = 0V VIN = 60V 4.0 140 µA) 3.5 µA) 15 µA) 120 3.0 100 2.5 10 80 CURRENT ( CURRENT ( CURRENT ( 2.0 60 VBIAS = 5V 1.5 5 40 V 1.0 IN = 42V VIN = 12V 20 0 0 0 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 SHDN VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3434 G04 3434 G05 3434 G06
Bias Sleep Current PGFB Threshold PG Sink Current
200 1.20 250 180 1.18 160 1.16 200 140 1.14 µA) 120 1.12 µA) 150 100 1.10 80 1.08 100 CURRENT ( VOLTAGE (V) CURRENT ( 60 1.06 40 1.04 50 20 1.02 0 1.00 0 –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) 3434 G07 3434 G08 3434 G09 3434fb 4