xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 1 features n operation voltage dc 12v~80v. n 0.1v current sense voltage reference. n directly drive 1~8 series 1w led. n excellent line and load regulation. n internal optimize power hv-mosfet. n built in thermal shutdown function. n built in current limiting function. n built in soft-start circuit. n available in soic-8 package. n up to 97% efficiency. applications n led lighting & led lamp n general purpose led lighting general description the XL8001 is a monolithic high voltage switching regulator with pfm that is specifically designed to operate from a 12v~80v dc power supply. the XL8001 is a high efficiency led driver switching regulator. the led string is driven at dc constant current rather than constant voltage, thus providing constant light output and enhanced reliability. figure1. package type of XL8001 v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 2 pin configurations XL8001 1 3 5 2 4 vin start csp vreg csp 6 7 8 vin csn csn figure2. pin configuration of XL8001 (top view) table 1: pin description pin number pin name description 1 start internal soft start pin. 2 vreg internal voltage regulation pin. (the vreg is about 8v) 3,4 csp current sense positive pin. (the current sense voltage is 0.1v) 5,6 vin input high voltage pin. (operation voltage 12v~80v) 7,8 csn current sense negative pin. n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 3 function block figure3. function block diagram of XL8001 typical application circuit figure4. XL8001 typical application n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 4 ordering information part number marking id lead free lead free packing type XL8001e1 XL8001e1 tube package temperature range XL8001tre1 XL8001e1 tape & reel xlsemi pb-free products, as designated with e1 suffix in the par number, are rohs compliant. absolute maximum ratings note1 parameter symbol value unit input voltage vin -0.3 to 90 v power dissipation p d internally limited mw thermal resistance (sop-8l) (junction to ambient, no heatsink, free air) r ja 100 o c/w operating junction temperature t j -40 to 125 o c storage temperature t stg -65 to 150 o c lead temperature (soldering, 10 sec) t lead 260 o c esd (hbm) >3000 v note1: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 5 XL8001 electrical characteristics t a = 25 ;unless otherwise specified. reference test circuit figure4 symbol parameter test condition min. typ. max. unit vcsp csp voltage vin=60v; iled=300ma; series 1~8 1w led 95 100 105 mv efficiency ? vin=60v; iled=300ma; pout=8w - 93.9 - % electrical characteristics (dc parameters) parameters symbol test condition min. typ. max. unit input operation voltage vin 12 80 v switching frequency fosc figure4 (8*1w) vin=60v 65. 2 81. 5 97.8 khz max. duty cycle d max 85 % vdmos drain-source breakdown voltage v brds v gs =0v, i ds =250ua 90 v vdmos drain-source on resistor r dson i ds =0.5a, v gs =8v 100 120 mohm thermal shutdown otp tj 160 0 c thermal shutdown window 20 0 c n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 6 [1] typical system application (vin=12v~80v) figure5. XL8001 system application at vin=12v~80v schematic figure6. XL8001 system application at vin=12v~80v efficiency curve n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 7 table1: figure5 input vin=12v/24v/36v/48v/60v/72v system parameters table: vin=12v vin=24v vin=36v led string 1w*n fosc pout efficiency fosc pout efficiency fosc pout efficiency 1 21.9 k 1.02w 79.6 % 25.5k 1.035w 77.5% 25.6k 1.059w 75.4% 2 22.3 k 1.97w 89.9 % 26.6k 2.022w 87.1% 39.3k 2.042w 84.7% 3 41.5k 2.912w 91.1% 49.2k 3.012w 89.9% 4 40.5k 3.86w 93.5% 55.0k 3.943w 92.0% 5 33.4k 4.831w 95.4% 57.1k 4.865w 93.8% 6 20.9k 5.575w 96.6% 55.6k 5.728w 94.7% 7 50.7k 6.592w 95.8% 8 42.4k 7.402w 96.5% vin=48v vin=60v vin=72v led string 1w*n fosc pout efficiency fosc pout efficiency fosc pout efficiency 1 24.8 k 1.070w 74.2% 23.9k 1.097w 73.0% 22.8k 1.111w 70.1% 2 39.3 k 2.073w 84.5% 38.6k 2.120w 82.0% 37.3k 2.157w 80.9% 3 51.1 k 3.05w 88.0 % 51.1k 3.122w 86.5% 50.1k 3.176w 86.5% 4 59.8 k 3.994w 90.3% 61.3k 4.085w 89.5% 61.0k 4.165w 89.0% 5 66.1 k 4.933w 92.4% 69.6k 5.063w 91.4% 70.3k 5.141w 90.4% 6 69.4 k 5.836w 93.5% 75.6k 5.968w 92.7% 77.8k 6.062w 91.4% 7 70.0 k 6.690w 94.5% 79.5k 6.850w 92.8% 98.7k 6.980w 92.3% 8 68.3 k 7.542w 95.0% 81.5k 7.723w 93.9% 88.0k 7.847w 92.8% schottky diode selection table vr 1a 3a 20v 1n5817 ss32 sk 32 1n5820 mbr320 sr302 30v 1n5818 ss33 sk 33 1n5821 mbr330 sr303 40v 1n5819 ss34 sk 34 1n5822 mbr340 sr304 50 v ss35 sk 35 mbr350 sr305 60 v ss36 sk 36 mbr360 sr306 70 v ss37 sk 37 sr307 80 v ss38 sk 38 sr308 90 v ss39 sk 39 sr309 100 v ss310 s 310 sr310 n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi preliminary datasheet 80v 0.5a high efficiency buck pfm led constant current driver XL8001 rev 1.0 8 package information sop8 package mechanical dimensions n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
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