Advanced LED Driver Specifications and Configuration Details
Discover detailed specifications and configuration information for the LP8868-Q1 SEMCO LED driver, designed for use with a 12V battery direct input and SFH47267AS A01 IR LEDs. Explore input voltage, current limits, dimming options, power components, thermal considerations, efficiency, and more to optimize your LED lighting setup efficiently and effectively.
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Presentation Transcript
LP8868-Q1 ( SEMCO) July/24
Input : 12V battery direct. 2 IR LED , IR LED : SFH47267AS A01 (Osram)
Comment Input voltage Vin 12 V Iout_Full Scale/string Max current per channel channel count Max output current PWM dimming duty Analog dimming duty Actual output current LED number # LED forward voltage Total LED Voltage Diode forward voltage Switching frequency switching frequency resistor Suggested power Inductor Actual power Inductor Actual power Inductor ESR Inductor peak current Inductor ripple current recommended inductor saturation current Sense resistor Actual sense resistor Power rating of sense resistor min. UVP upper resistor UVP lower resistor UVP verification Device package Device power loss Device thermal rise Thermal foldback Thermal foldback Efficiency Input capacitance Output caps Output caps ESR desired output ripple calculated output ripple 320 1 320 1 1 320 2 4.2 8.40 0.74 1 21 10 22 0.01 0.38 0.12 0.67 625.00 625.00 0.06 50 40 PASS VSON 0.16 4.71 105 46.1 0.9012 15 5 0.01 0.1 0.00 mA Iout_Full Scale total Dpwm Dadim Iout LED count/string LED Vf Vled VD Fsw RFET L Lact RL IL_peak IL_rip_pp IL_sat Rse Rse_actual mA mA V V V MHz k uH uH A A A m m W k k Rup1 Rup2 Ploss Trise Ttemp Rtemp W deg deg k TI recommended at least 25deg margin system efficiency Cin Cout ESR Vrip_d Vrip_c uF uF V V TI recommended at least 15uF MLCC calculated output ripple shuold be smaller than desired output ripple
