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MAX16805 Arkusz danych(PDF) 7 Page - Maxim Integrated Products |
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MAX16805 Arkusz danych(HTML) 7 Page - Maxim Integrated Products |
7 / 19 page EEPROM-Programmable, High-Voltage, 350mA LED Drivers with LED Current Foldback _______________________________________________________________________________________ 7 LED CURRENT FALL TIME (EXPANDED) MAX16805 toc10 20 µs/div VDIM 2V/div ILED 200mA/div 0V 0A DIM PULSED AT 200Hz LED CURRENT RISE TIME (EXPANDED) MAX16805 toc11 20 µs/div VDIM 2V/div ILED 200mA/div 0V 0A DIM PULSED AT 200Hz OUTPUT CURRENT DUTY CYCLE vs. ANALOG DIM VOLTAGE VDIM (V) 3 2 1 20 40 60 80 100 120 0 04 VIN = 12V RAMP REGISTER = 0x07 CFD = GND TFP = 5V TFN = GND OUTPUT CURRENT DUTY CYCLE vs. INPUT VOLTAGE INPUT VOLTAGE (V) 18 16 14 12 10 8 6 4 2 20 40 60 80 100 120 0 020 BIT3 = 1 BIT3 = 0 LED CURRENT THRESHOLD REGISTER = (0x07) OUTPUT CURRENT DUTY CYCLE vs. INPUT VOLTAGE INPUT VOLTAGE (V) 25 20 15 10 5 20 40 60 80 100 120 0 030 BIT3 = 1 BIT3 = 0 LED CURRENT THRESHOLD REGISTER = (0x00) OUTPUT CLAMP vs. THERMAL FOLDBACK SLOPE VTFN (V) 1.4 1.2 0.8 1.0 0.4 0.6 0.2 5 10 15 20 25 30 35 40 45 0 0 1.6 THERMAL SLOPE = 4V/V THERMAL SLOPE = 4V/V THERMAL SLOPE = 8V/V THERMAL SLOPE = 12V/V THERMAL FOLDBACK CLAMP LEVEL = 40% THERMAL KNEE = +60 °C OUTPUT RESPONSE TO SW INPUT MAX16805 toc16 40ms/div VSW 5V/div VSENSE 200mV/div DEBOUNCE TIME DEBOUNCE TIME Typical Operating Characteristics (continued) (VIN = 12V, VEN = VIN, CV5 = 0.1µF, IV5 = 0, CS- = GND, RSENSE = 0.56Ω, connect OUT to CS+, VDIM = 4V, SW = VFD = open, VTFP/SC = 5V, VTFN/SD = GND, DGND = GND. TA = +25°C, unless otherwise noted.) |
Podobny numer części - MAX16805 |
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Podobny opis - MAX16805 |
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