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DS3994Z+ Datasheet(PDF) 5 Page - Maxim Integrated Products |
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DS3994Z+ Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 28 page 4-Channel Cold-Cathode Fluorescent Lamp Controller _____________________________________________________________________ 5 ACTIVE SUPPLY CURRENT vs. SUPPLY VOLTAGE SUPPLY VOLTAGE (V) 5.3 5.1 4.9 4.7 6 7 8 9 10 5 4.5 5.5 4 DPWM = 10% DPWM = 50% DPWM = 100% GATE QC = 3.5nC SVM < 2V fLF:OSC = 64kHz ACTIVE SUPPLY CURRENT vs. TEMPERATURE TEMPERATURE ( °C) 22.5 6.5 7.0 7.5 8.0 9.0 8.5 9.5 10.0 10.5 11.0 6.0 -40.0 85.0 VCC = 5.5V VCC = 5.0V DPWM = 100% fLF:OSC = 64kHz GATE QC = 3.5nC VCC = 4.5V INTERNAL FREQUENCY CHANGE vs. TEMPERATURE TEMPERATURE ( °C) 22.5 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 -0.6 -0.8 -1.0 -40.0 85.0 LAMP FREQUENCY DPWM FREQUENCY TYPICAL OPERATION AT 12V 10 µs 5.0V GA 10 µs 5.0V GB 10 µs 2.0V LCM 10 µs 2.0V OVD BURST DIMMING AT 150Hz AND 10% 1ms 5.0V GA 1ms 5.0V GB 1ms 2.0V LCM 1ms 2.0V OVD TYPICAL OPERATION AT 15V 10 µs 5.0V GA 10 µs 5.0V GB 10 µs 2.0V LCM 10 µs 2.0V OVD TYPICAL OPERATION AT 18V 10 µs 5.0V GA 10 µs 5.0V GB 10 µs 2.0V LCM 10 µs 2.0V OVD TYPICAL STARTUP WITH SVM 5ms 2.0V SVM 5ms 5.0V GB 5ms 2.0V LCM 5ms 1.0V OVD Typical Operating Characteristics (VCC = +5.0V, TA = +25°C, unless otherwise noted.) |
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