xlsemi datasheet 80v 0.5a switching current buck pfm led constant current driver XL8003 rev 1.2 1 features n wide 24v to 80v input voltage range n 0.2v current sense voltage reference. n directly drive 3~8 series 1w led. n excellent line and load regulation. n high efficiency up to 96%. n internal optimize power hv-mosfet. n built in thermal shutdown function. n built in uvlo function. n built in current limiting function. n built in led open & short protection. n built in soft-start circuit. n available in soic-8 package. applications n ebike led lighting n led lighting & led lamp n general purpose lighting general description the XL8003 is a monolithic high voltage switching regulator with pfm that is specifically designed to operate from a 24v~80v dc supply. the XL8003 is a high efficiency led driver switching regulator. the led string is driven at dc constant current rather than constant voltage, thus providing constant current output and enhanced reliability. figure1. package type of XL8003 v?mw`r?y?b? w w w . g o f o t e c h . c o m
xlsemi datasheet 80v 0.5a switching current buck pfm led constant current driver XL8003 rev 1.2 2 pin configurations XL8003 1 3 5 2 4 vin nc csp vdd sw 6 7 8 vin csn csn figure2. pin configuration of XL8003 (top view) table 1 pin description pin number pin name description 1 nc no connected. 2 vdd the chip supply voltage. 3 csp current sense positive terminal. 4 sw output switching pin 5, 6 vin input high voltage pin. (operation voltage 24v~ 80v) 7, 8 csn current sense negative terminal. function block figure3. function block diagram of XL8003 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 datasheet 80v 0.5a switching current buck pfm led constant current driver XL8003 rev 1.2 3 typical application circuit figure4. XL8003 typical application (3w~8w led lamp) ordering information order information marking id package type packing type supplied as XL8003e1 XL8003e1 soic- 8 2500 units on 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 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 datasheet 80v 0.5a switching current buck pfm led constant current driver XL8003 rev 1.2 4 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. XL8003 electrical characteristics t a = 25 ;unless otherwise specified. reference test circuit figure4 symbol parameter test condition min. typ. max. unit vcsp csp voltage vin = 24v to 80v, iled=0.3a, pout=8w 190 200 210 mv efficiency ? vin=48v, iled=0.3a, pout=8w - 94.78 - % efficiency ? vin=60v, iled=0.3a, pout=8w - 93.99 - % efficiency ? vin=72v, iled=0.3a, pout=8w - 92.55 - % electrical characteristics (dc parameters) parameters symbol test condition min. typ. max. unit input operation voltage vin 24 80 v switching frequency fosc figure4 (8*1w) vin=48v 53. 8 67.2 80.6 khz switching frequency fosc figure4 (8*1w) vin=60v 64. 2 80.2 96.2 khz switching frequency fosc figure4 (8*1w) vin=72v 70. 0 87.4 104.8 khz output led open voltage vopen figure4 vin=72v 36 v dmos drain-source breakdown voltage v brds v gs =0v, i ds =250ua 90 v dmos drain-source on resistor r dson i ds =0.5a, v gs =10v 0. 1 0.15 ohm thermal shutdown otp tj 165 0 c thermal shutdown window 25 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 datasheet 80v 0.5a switching current buck pfm led constant current driver XL8003 rev 1.2 5 [1] typical application circuit (3w ~ 8w) figure5. XL8003 system application (3w ~ 8w) the figure5 system parameters as following: vin=36v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3 35.97 89 9.60 297 44.9 89.06 4 35.98 114 12.79 294 50.0 91.68 5 35.98 140 16.07 291 53.7 92.84 6 35.97 164 19.22 289 53.0 94.16 7 35.96 188 22.41 287 49.1 95.14 8 35.96 212 25.68 285 41.8 96.00 vin=48v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3 47.99 68 9.62 300 47.6 88.44 4 47.99 87 12.79 298 56.2 91.29 5 47.99 107 16.07 295 62.6 92.32 6 47.98 125 19.21 292 66.6 93.53 7 47.98 144 22.41 290 68.1 94.06 8 47.98 162 25.67 287 67.2 94.78 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 datasheet 80v 0.5a switching current buck pfm led constant current driver XL8003 rev 1.2 6 vin=60v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3 59.99 55 9.62 303 48.4 88.34 4 59.99 71 12.78 301 58.4 90.32 5 59.98 87 16.06 298 66.8 91.71 6 59.99 102 19.21 295 73.1 92.61 7 59.98 117 22.40 292 77.6 93.20 8 59.98 132 25.66 290 80.2 93.99 vin=72v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3 71.97 47 9.62 306 48.7 87.03 4 71.97 60 12.80 304 59.5 90.11 5 71.97 74 16.08 301 69.0 90.88 6 71.96 87 19.23 298 76.4 91.53 7 71.96 100 22.42 296 82.7 92.22 8 71.95 113 25.68 293 87.4 92.55 figure6. XL8003 system 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 datasheet 80v 0.5a switching current buck pfm led constant current driver XL8003 rev 1.2 7 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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