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xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 1 features n wide 24v to 80v input voltage range n 0.2v current sense voltage reference. n directly drive 3~8 series 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 to252-5l package. applications n ebike led lighting n led lighting & led lamp n general purpose lighting general description the xl8004 is a monolithic high voltage switching regulator with pfm that is specifically designed to operate from a 24v~80v dc supply. the xl8004 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 xl8004
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 2 pin configurations figure2. pin configuration of xl8004 (top view) table 1 pin description pin number pin name description 1 vdd the chip supply voltage. 2 csn current sense negative terminal. 3 vin input high voltage pin. (operation voltage 24v~ 80v) 4 csp current sense positive terminal. 5 sw output switching pin. function block figure3. function block diagram of xl8004
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 3 typical application circuit figure4. xl8004 typical application (3w~8w led lamp) ordering information order information marking id package type packing type supplied as XL8004E1 XL8004E1 to252-5l 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 (to252-5l) (junction to ambient, no heatsink, free air) r ja 50 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
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 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. xl8004 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 - 94.9 - % efficiency ? vin=60v, iled=0.3a, pout=8w - 94.6 - % efficiency ? vin=72v, iled=0.3a, pout=8w - 92.4 - % 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 47.8 59.7 71.6 khz switching frequency fosc figure4 (8*1w) vin=60v 56.5 70.6 84.7 khz switching frequency fosc figure4 (8*1w) vin=72v 61.2 76.4 91.6 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
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 5 [1] typical application circuit (3w ~ 8w) figure5. xl8004 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 35.98 88 9.59 300 40.1 90.86 4 35.97 113 12.75 297 45.5 93.16 5 35.97 139 16.02 294 48.0 94.20 6 35.97 163 19.15 290 47.7 94.72 7 35.96 187 22.33 287 44.4 95.30 8 35.96 210 25.59 285 38.0 96.58 vin=48v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3 47.99 67 9.61 305 41.9 91.16 4 47.99 87 12.76 301 49.6 91.99 5 47.98 107 16.04 298 55.4 93.11 6 47.98 125 19.18 295 58.8 94.34 7 47.98 143 22.36 292 60.2 95.16 8 47.98 162 25.60 288 59.7 94.85
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 6 vin=60v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3 59.99 56 9.61 310 42.3 88.68 4 59.98 72 12.78 307 51.2 90.85 5 59.98 88 16.06 304 58.6 92.50 6 59.98 103 19.20 300 64.1 93.23 7 59.98 118 22.39 297 68.2 93.96 8 59.97 133 25.65 294 70.6 94.55 vin=72v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3 72.06 49 9.63 315 42.1 85.91 4 72.05 63 12.80 312 51.6 87.98 5 72.05 76 16.09 309 60.0 90.80 6 72.04 89 19.23 305 66.6 91.48 7 72.04 101 22.42 302 72.0 93.06 8 72.04 115 25.68 298 76.4 92.37 figure6. xl8004 system efficiency curve
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 7 [2] typical application circuit (6w ~ 16w) figure7. xl8004 system application (6w ~ 16w) the figure7 system parameters as following: vin=36v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3*2 35.97 183 9.77 595 22.0 88.31 4*2 35.96 234 12.99 591 24.7 91.23 5*2 35.95 286 16.28 586 25.8 92.79 6*2 35.94 336 19.48 583 25.3 94.05 7*2 35.94 385 22.70 579 23.2 94.99 8*2 35.93 433 25.88 575 19.5 95.65 vin=48v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3*2 47.98 140 9.78 601 23.4 87.50 4*2 47.97 179 13.00 597 27.6 90.38 5*2 47.96 218 16.29 593 30.6 92.39 6*2 47.96 256 19.49 589 32.3 93.50 7*2 47.95 294 22.71 585 32.9 94.24 8*2 47.95 330 25.91 581 32.4 95.14
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 8 vin=60v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3*2 59.96 115 9.95 609 24.1 87.88 4*2 59.96 148 13.22 605 29.0 90.13 5*2 59.96 180 16.53 600 33.0 91.89 6*2 59.96 211 19.73 596 35.9 92.95 7*2 59.95 242 22.98 592 38.0 93.77 8*2 59.95 271 26.18 587 39.0 94.59 vin=72v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 3*2 72.08 97 9.86 615 24.2 86.73 4*2 72.07 124 13.12 611 29.4 89.70 5*2 72.06 151 16.43 606 34.0 91.50 6*2 72.05 178 19.66 603 37.7 92.44 7*2 72.04 204 22.90 598 40.7 93.18 8*2 72.04 229 26.11 594 43.0 94.01 figure8. xl8004 system efficiency curve
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 9 [3] typical application circuit (9w ~ 14w) xl8004 r1 330k df mbrs2h100 csn rcs 0.68 l1 1mh/0.6a cout 100uf/50v iled=0.2v/rcs output series 9~14 * 1w led vdd dc 48v~80v c1 2.2uf vin ceramic 1 3 2 [1] input dc 48v~80v. [2] output constant current drive series 9~14 * 1w led. [3] support output led open & short protection. dd 1n4148 cin 33uf/100v r2 30k 0.25w dz 15v csp 5 sw 4 figure9. xl8004 system application (9w ~ 14w) the figure9 system parameters as following: vin=48v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 9 47.99 173 28.69 276 66.8 95.4 10 47.99 191 31.93 274 61.3 95.4 11 47.98 207 35.15 272 53.5 96.3 12 47.97 225 38.41 271 43.1 96.4 13 47.98 242 41.63 270 30.4 96.8 vin=60v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 9 59.99 141 28.63 278 84.4 94.1 10 59.99 155 31.88 276 83.8 94.6 11 59.99 169 35.10 274 81.0 94.9 12 59.98 183 38.34 272 76.6 95.0 13 59.98 196 41.58 270 70.5 95.5 14 59.98 209 44.80 268 62.3 95.8
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 10 vin=72v dc 1w led series vin(v) iin(ma) vout(v) iout(ma) fosc(khz) effiency(%) 9 72.04 120 28.61 281 94.4 93.0 10 72.03 132 31.86 278 96.5 93.2 11 72.02 143 35.07 276 97.2 94.0 12 72.02 156 38.33 274 96.4 93.5 13 72.02 168 41.56 272 94.2 93.4 14 72.01 180 44.78 269 90.5 92.9 figure10. xl8004 system efficiency curve
xlsemi datasheet 80v 1a switching current buck pfm led constant current driver xl8004 rev 1.1 www.xlsemi.com 11 package information to2 5 2-5l

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