xlsemi datasheet 100v 0.5a switching current buck pfm led constant current driver XL8005 rev 1.0 www.xlsemi.com 1 features n wide 24v to 100v 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 minimum drop out >6v. 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 XL8005 is a monolithic high voltage switching regulator with pfm that is specifically designed to operate from a 24v~100v dc supply. the XL8005 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 XL8005
xlsemi datasheet 100v 0.5a switching current buck pfm led constant current driver XL8005 rev 1.0 www.xlsemi.com 2 pin configurations XL8005 1 3 5 2 4 vin nc csp vdd sw 6 7 8 vin csn csn figure2. pin configuration of XL8005 (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~ 100v) 7, 8 csn current sense negative terminal. function block figure3. function block diagram of XL8005
xlsemi datasheet 100v 0.5a switching current buck pfm led constant current driver XL8005 rev 1.0 www.xlsemi.com 3 typical application circuit XL8005 r1 330k df s210 csn rcs 0.68 l1 1mh/0.6a cout 100uf/35v iled=0.2v/rcs output series 3~8 * 1w led vdd dc 24v~100v csp c1 2.2uf vin ceramic 2 4 5,6 7,8 [1] input dc 24v~100v. [2] output constant current drive series 3~8 * 1w led. [3] support output led open & short protection. dd bav21w cin 33uf/100v r2 30k 0.25w 3 sw figure4. XL8005 typical application (3w~8w led lamp) ordering information order information marking id package type packing type XL8005e1 XL8005e1 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 120 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
xlsemi datasheet 100v 0.5a switching current buck pfm led constant current driver XL8005 rev 1.0 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. XL8005 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 100v, iled=0.3a, pout=8w 190 200 210 mv efficiency ? vin=48v, iled=0.3a, pout=8w - 94.8 - % efficiency ? vin=60v, iled=0.3a, pout=8w - 94.0 - % efficiency ? vin=72v, iled=0.3a, pout=8w - 92.8 - % efficiency ? vin=84v, iled=0.3a, pout=8w - 92.3 - % electrical characteristics (dc parameters) parameters symbol test condition min. typ. max. unit input operation voltage vin 24 100 v switching frequency fosc figure4 (8*1w) vin=48v 47.4 59.3 71.1 khz switching frequency fosc figure4 (8*1w) vin=60v 56.2 70.3 84.3 khz switching frequency fosc figure4 (8*1w) vin=72v 61.2 76.5 91.8 khz switching frequency fosc figure4 (8*1w) vin=84v 64.1 80.2 96.2 khz dmos drain-source breakdown voltage v brds v gs =0v, i ds =250ua 120 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 100v 0.5a switching current buck pfm led constant current driver XL8005 rev 1.0 www.xlsemi.com 5 [1] typical application circuit (3w ~ 8w) XL8005 r1 330k df s210 csn rcs 0.68 l1 1mh/0.6a cout 100uf/35v iled=0.2v/rcs output series 3~8 * 1w led vdd dc 24v~100v csp c1 2.2uf vin ceramic 2 4 5,6 7,8 [1] input dc 24v~100v. [2] output constant current drive series 3~8 * 1w led. [3] support output led open & short protection. dd bav21w cin 33uf/100v r2 30k 0.25w 3 sw 3 4 5 6 7 8 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 efficiency vs led string efficiency(%) led string(n*1w) vin=24v,iled=300ma vin=36v,iled=300ma vin=48v,iled=300ma vin=60v,iled=300ma vin=72v,iled=300ma vin=84v,iled=300ma vin=96v,iled=300ma figure5. XL8005 system application& efficiency curve
xlsemi datasheet 100v 0.5a switching current buck pfm led constant current driver XL8005 rev 1.0 www.xlsemi.com 6 [2] typical application circuit (low led open voltage) XL8005 r1 330k df s210 csn rcs 0.68 l1 1mh/0.6a cout 100uf/35v iled=0.2v/rcs output series 3~8 * 1w led vdz=1.3*vout vdd dc 24v~100v csp c1 2.2uf ceramic vin 2 4 5,6 7,8 [1] input dc 24v~100v. [2] output constant current drive series 3~8 * 1w led. [3] support output led open & short protection. dd bav21w cin 33uf/100v r2 30k 0.25w 3 sw r3 2k dz zener figure6. XL8005 system application with low led open voltage
xlsemi datasheet 100v 0.5a switching current buck pfm led constant current driver XL8005 rev 1.0 www.xlsemi.com 7 package information sop8 package mechanical dimensions
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