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LTC1430AIGN Datasheet(PDF) 4 Page - Linear Technology |
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LTC1430AIGN Datasheet(HTML) 4 Page - Linear Technology |
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4 / 24 page  4 LTC1430A TEMPERATURE ( °C) –40 12.5 13.0 14.0 20 60 1430 G01 12.0 11.5 –20 0 40 80 100 11.0 10.5 13.5 VCC = 5V TEMPERATURE ( °C) –40 70 75 85 90 95 0 40 60 1430 G03 80 –20 20 80 100 100 VCOMP = VCC VFB = 1.265V TEMPERATURE ( °C) –40 210 220 240 20 60 1430 G02 200 190 –20 0 40 80 100 180 170 230 VCC = 5V FREQSET FLOATING Maximum Duty Cycle vs Temperature Oscillator Frequency vs Temperature Error Amplifier Transconductance vs Temperature TEMPERATURE ( °C) –40 350 400 500 550 600 850 700 0 40 60 100 1430 G04 450 750 800 650 –20 20 80 gm = ∆ICOMP ∆VFB ∆VFB vs Temperature TEMPERATURE ( °C) –40 6 8 20 1430 G05 0 –6 –4 –20 0 40 –8 –10 10 4 2 –2 60 80 100 VCC = 5V Load Regulation LOAD CURRENT (A) 0 –1.0 – 0.8 – 0.4 – 0.2 0 0.4 1 5 7 1460 G06 – 0.6 0.2 4 9 10 2 3 68 TA = 25°C VOUT = 3.3V VCC = 5V FIGURE 4 Supply Current vs Oscillator Frequency OSCILLATOR FREQUENCY (kHz) 1 10 100 1000 0 200 300 400 0.1 100 500 1430 G08 IPVCC (LOADED WITH 10,000pF, PVCC = 12V) IPVCC (NO LOAD, PVCC = 5V) IPVCC (NO LOAD, PVCC = 12V) IVCC TA = 25°C VCC = 5V FIGURE 4 Output Voltage vs Load Current with Current Limit LOAD CURRENT (A) 0 1.5 2.0 2.5 6 10 1430 G07 1.0 0.5 0 24 8 3.0 3.5 4.0 12 TA = 25°C VCC = 5V FIGURE 4 RI(MAX) = 10k RI(MAX) = 16k TYPICAL PERFOR A CE CHARACTERISTICS IMAX Pin Sink Current vs Temperature |
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