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o2313hk 20131009-s00002/51513hk no.a2186- 1/16 semiconductor components industries, llc, 2013 october, 2013 http://onsemi.com lv5012md overview lv5012md is a high voltage led drive controller which dr ives led current with exte rnal mos fet. lv5012md is realized a simple led circuit with a few ex ternal parts and reduce circuit board space. it corresponds to various dimming controls including the triac dimming control without flickering. lv5012md is realized high efficiency du e to low operation current. function ? high voltage led controller ? various dimming control - triac & analog input & pwm input ? fixed switching frequency [70 khz] ? multiple internal reference voltage -auto level control output & 0.45v & 0.1v ? short protection circuit ? [latch off] ? over voltage protection ? [auto recovery circuit] ? 2staged thermal protection? [auto recovery circuit] ? external thermal protection adopted ? built-in triac stabilized function. bi-cmos lsi led driver ic mfp14s(225mil) ordering number : ena2186a ordering information see detailed ordering and shipping informa tion on page 16 of this data sheet.
lv5012md no.a2186-2/16 specifications maximum ratings at ta = 25 ? c parameter symbol conditions ratings unit high voltage input hv_abs ? ? ? ? ? c operating junction temperature topj ? ? c storage temperature tstg ? ? c *1: specified board = 64mm24mm1.2mm, glass epoxy board caution 1) absolute maximum ratings represent the va lues which cannot be exceeded for any length of time. caution 2) even when the device is used within the range of absolute maximum rati ngs, as a result of continuous usage under hig h temperature, high current, high voltage, or drastic temper ature change, the reliability of the ic may be degraded. please contact us for the further details. recommended operating conditions at ta = 25 ? c parameter symbol conditions ratings unit in p ut volta g e vin 8.5 to 24 v electrical characteristics at ta = 25 ? c, v in = 12v, unless otherwise specified. parameter symbol conditions ratings unit min typ max ? reference voltage block ? built-in reference voltage vref 0.45 v fet turn-off cs voltage vcs acs=2.0v ref_in=3v, alc_c=0v 0.45 v vin regulation of cs voltage vcs_ln vin=8.5 to 24v, ref_in=3v acs=2.0v, alc_c=0v 0.5 % ref_in input range refin_rng 0 3.2 v minimum alc_c voltage min_alc_c 0.5 v trc pin voltage of operation start trc_str 0.1 v trc pin voltage of operation stop trc_stp 0.05 v ? under voltage lockout ? operation start input voltage uvloon 8 9 10 v operation stop input voltage uvlooff 6.3 7.3 8.3 v hysteresis voltage uvloh 1.7 v ? oscillation ? frequency fosc 61 70 79 khz maximum duty maxduty 70 % ? comparator ? input current iiocs cs=0v 160 na duty on detection voltage vdtyon cs=0v, ref_in=3v 1.7 v duty off detection voltage vdtyoff cs=0v, ref_in=3v 1.3 v stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended oper ating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliabili ty.
lv5012md no.a2186-3/16 ? thermal protection circuit ? 1 st stage thermal protection otp *design guarantee 140 ? c 1 s t stage hysteresis [ 1 st stage to normal operation ] ? otp *design guarantee 12 ? c reference voltage at 1 st stage refotp *design guarantee 0.1 v thermal shutdown temperature tsd *design guarantee 155 ? c thermal shutdown hysteresis ? tsd *design guarantee 12 ? c ? drive circuit ? out sink current ioi vin=12v,cs=3v, out=2v 500 1000 ma out source current1 (first step driving current) ioo1 vin=12v,cs=0v, out=6v 50 ma out source current2 (second step driving current) ioo2 vin=12v,cs=0v, out=6v 200 ma ? switching stop function ? switching stop enb voltage enbsp 1.9 2.0 2.1 v switching start enb voltage enbst 1.7 1.8 1.9 v enb hysteresis voltage enbhy 0.2 v ? triac stabilization circuit ? threshold of dml load (threshold of bleeder) vacs load operation of the dml pin is started, when acs pin is less than this value. 0.85 v dml load current idml dml=40v, acs=0.7v 20 ma ? reference out circuit ? ref_out voltage ref_out vin=12v, iref_out=0.5ma 2.8 3.0 3.2 v ref_out load iref_out vin=12v 1 ma ? startup circuit ? startup output voltage vin_out acs=2.0v, 11 12 13 v static startup current ihv acs=2.0v, out=open, cs=0.6v 1 ma leak current of startup circuit ihv2 hv=100v, vin=15v 20 ? a ? vin current ? uvlo mode vin current iccoff vin=7v 100 ? a low triac duty current iccltr trc=0v 250 ? a normal mode vin current ivin acs=2.0v, ref_in=3v, alc_c=0v, cs=0.6v, out=open 1 ma ? vin over voltage protection (ovp) circuit ? vin over voltage protection voltage vinovp 24 27 30 v vin current at ovp iinovp vin=30v 10 ma ? cs pin abnormal sensing circuit ? abnormal sensing voltage csocp 1.7 1.9 2.1 v
lv5012md no.a2186-4/16 block diagram ref_in cs built-in regulator vin current limit comparater oscillator 70khz tsd ovp uvlo control logic gnd out s r q 0.45v - + short protection circuit - + acs 0.85v ac_voltage sense comparator hv built-in hv regulator - + ac_duty sense comparator trc - 1.3v dml 1.0v enb alc_c ref_out 0.1v reference voltage auto level control function out2 1.7v 3.0v - + sd or normal 0.05 0.1v pin assignment
lv5012md no.a2186-5/16 pin function no pin symbol pin description 1 hv please connect about 10k ? between this pin and the rectified ac voltage. thereby hv regulator for ic startups operates. 2 dml this pin is drain of internal bleeder mosfet. this pin is used in triac dimming applications for triac stabilization. please connect the resistor ?rbl? between this pin and the rectified ac voltage. if acs pin is below 0.85v, the internal bleeder mos is turned on and bleeder current flows. please set ?rbl? so that the voltage of dml pin does not exceed 55v when the bleeder mos is turned on. [if this function not used, do not connect.] 3 nc no connect pin 4 gnd gnd pin. 5 enb switching operation on/off pin. if the input of this pin is above 2v, out pin is fixed low. if the input of this pin is below 1.8v, normal operation is started. connect it to gnd when unused. 6 acs this pin senses the rectifi ed ac voltage for triac dimming. if the voltage of this pin is below 0.85v, the inte rnal bleeder mos is turned on and bleeder current flows. if the voltage of this pin is above 1.7v, lv5012md rec ognizes ?triac on?. if the voltage of this pin is below 1.3v, lv5012md recognizes ?triac off?. [if this function not used, pl ease connect to ref_out pin.] 7 ref_out reference voltage (3.0v) output pin. 8 alc_c this pin is used for auto level control (alc) f unction. please connect a capacitor of about 0.1 ? f to gnd. thereby alc_c pin can output the smoothing value of ref_in pin voltage. 9 trc please connect a capacitor about 1 ? f to gnd, and a resistor about 4.7m ? to vin. if this pin is below 0.05v, the operation is stopped and vin current is less than 250 ? a (typ). if this pin is above 0.1v, the operation is started. 10 ref_in this pin senses the rectif ied ac voltage for the alc function. 11 cs current sense pin. when cs pin voltage exceeds the reference, the power mosfet is turned off. (the details of the reference are described in following ?functional description?.) if this pin voltage exceeds 1.9v, lv5012md stops switching. 12 vin power supply pin. operation : vin > uvloon(9v) stop : vin < uvlooff(7.3v) switching stop : vin > vinovp(27v) pull down to gnd : vin > 28v 13 gnd gnd pin. 14 out the external power mosfet is driven by this pin. please connect to mosfet gate.
lv5012md no.a2186-6/16 sample application circuit non-isolation dimmable configuration isolation dimmable configuration hv out dml gnd nc vin gnd cs enb ref_in acs trc ref_out alc_c 2 8 4 lv5012md ac 1 5 6 7 9 10 11 12 13 14 led- 3 led+ hv out dml gnd nc vin gnd cs enb ref_in acs trc ref_out alc_c 2 8 4 lv5012md ac 1 5 6 7 9 10 11 12 13 14 led- 3 led+
lv5012md no.a2186-7/16 package dimensions unit : mm 0.0 ? 0.2 ? 0.4 ? 0.6 ? 0.8 ? 1.0 ? \ 30 0 30 60 90 120 150 allowable power dissipation. pdmax - w ambient temperature, ta - ? c pd max -ta soic14 w / mfp14s (225 mil) case 751cb issue o date 29 feb 2012 specified board: 64mm24mm1.2mm, glass epoxy board
lv5012md no.a2186-8/16 trc_str ? ta 0.07 0.08 0.09 0.10 0.11 0.03 0.04 0.05 0.06 0.07 0.08 --50 50 0 100 0 50 100 0 50 100 0 50 100 0 50 100 0 50 100 0 50 100 150 150 ambient temperature, ta -- c trc_stp ? ta trc pin voltage of operation stop, trc_stp -- v --50 ambient temperature, ta -- c uvloon ? ta operation start input voltage, uvloon -- v 8.0 8.5 9.0 9.5 10.0 --50 150 ambient temperature, ta -- c uvlooff ? ta operation stop input voltage, uvlooff -- v 6.5 7.0 7.5 8.0 8.5 --50 150 ambient temperature, ta -- c trc pin voltage of operation start, trc_str -- v ambient temperature, ta -- c uvloh ? ta hysteresis voltage, uvloh -- v 1.60 1.80 --50 150 maximum duty, maxduty -- % ambient temperature, ta -- c fosc ? ta frequency, fosc -- khz 60 65 70 75 1.65 1.70 1.75 80 --50 150 ambient temperature, ta -- c maxduty ? ta 60 65 70 75 80 --50 150
lv5012md no.a2186-9/16 vdtyon ? ta 1.60 1.65 1.70 1.75 1.80 1.20 1.25 1.30 1.35 1.40 --50 50 0 100 0 50 100 0 50 100 0 50 100 0 50 100 0 50 100 0 50 100 0 50 100 150 150 ambient temperature, ta -- c vdtyoff ? ta duty off detection voltage, vdtyoff -- v --50 ambient temperature, ta -- c enbsp ? ta switching stop enb voltage, enbsp -- v 1.90 1.95 2.00 2.05 2.10 --50 150 ambient temperature, ta -- c enbst ? ta switching start enb voltage, enbst -- v 1.70 1.75 1.80 1.85 1.90 --50 150 ambient temperature, ta -- c duty on detection voltage, vdtyon -- v ambient temperature, ta -- c enbhy ? ta enb hysteresis voltage, enbhy -- v 0.10 0.25 --50 150 ambient temperature, ta -- c ref_out ? ta ref_out voltage, ref_out -- v dml load current, idml -- ma 2.8 2.9 3.0 3.1 3.2 --50 150 ambient temperature, ta -- c vacs ? ta threshold of dml load, vacs -- v 0.75 0.80 0.85 0.90 0.15 0.20 0.95 --50 150 ambient temperature, ta -- c idml ? ta 20 30 40 50 60 70 80 90 100 --50 150
lv5012md no.a2186-10/16 vin_out ? ta 11.0 11.5 12.0 12.5 13.0 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 --50 50 0 100 0 50 100 0 50 100 0 50 100 0 50 100 0 50 100 0 50 100 150 150 ambient temperature, ta -- c ihv ? ta static startup current, ihv -- ma --50 ambient temperature, ta -- c iccoff ? ta uvlo mode vin current, iccoff -- a 40 60 80 100 120 140 --50 150 ambient temperature, ta -- c iccltr ? ta low triac duty current, iccltr -- a 150 200 250 300 350 --50 150 ambient temperature, ta -- c startup output voltage, vin_out -- v ambient temperature, ta -- c ivin ? ta normal mode vin current, ivin -- ma 0.4 1.8 --50 150 ambient temperature, ta -- c vinovp ? ta vin over voltage protection voltage, vinovp -- v 24 25 26 27 28 29 30 --50 150 ambient temperature, ta -- c csocp ? ta abnormal sensing voltage, csocp -- v 1.6 1.7 1.8 1.9 2.0 2.1 0.6 0.8 1.0 1.2 1.4 1.6 2.2 --50 150
lv5012md no.a2186-11/16 functional description lv5012md is an led driver ic that op erates directly from the rectified ac voltage. lv5012md controls brightness of the led by controlling a peak current of the mosfet. 1. start up function lv5012md has a high voltage regulator built-in for self-supplying from the rectified ac voltage. it outputs 12v, and thereby the circuit in the ic starts. pl ease connect about 10k ? between hv pin and the rectified ac voltage to operate hv regulator normally. 2. peak current control lv5012md detects the current of extern al mosfet as shown in the following diagram. the current that flows into mosfet is a triangular wave shown in the diagram. the current peak value is determined by the relationship between the internal reference level and cs voltage. this relationship makes power factor correction (pfc). cs voltage is used by internal comparator to compare to the reference level. and out pin outputs the signal for mosfet control. lv5012md controls the peak value of mosfet current. here, the reference level is lower value of either ?alc_out? or ?vref(0.45v)?. ( ?alc_out? is described in ?3. auto level control function?.) the peak value of mosfet current (ipk) is determined by : in the case of ?alc_out < vref(0.45v)? ? rcs out alc ipk _ ? in the case of ?alc_out > vref(0.45v)? ? rcs v ipk 45 . 0 ? rectified ac voltage fet current alc_out out (fet gate) t on off ton toff vref (0.45vtyp) 0.5vtyp reference =alc_out reference =0.45v reference =alc_out reference r1,r2 : external resistor for ref_in pin setting rcs : external resistor for current sense m1 : external power mosfet
lv5012md no.a2186-12/16 3. auto level control (alc) function auto level control (alc) function makes the sine wave reference voltage which doesn?t depend on ac voltage. this function realizes both lower total harmonic distortion and g ood line regulation. alc function is realized by calculation shown in the following diagram. sine wave is inputted into ref_in pin. and alc_c pin is the smoothing value of ref_in pin voltage. the alc_c pin voltage is compared with internal reference 0.5v by the ?larger selection?. if the value of alc_c pin voltage is more than 0.5v, the ?larger selection? outputs alc_c voltage, otherwise outputs 0.5v. and the ?divider? divides the value of ref_in pin voltage by the ?larger selection? output. if th e ?larger selection? output is alc_c voltage, the output of ?divider? is ac voltage-independent sine wave. the ?multiplier? adjusts amplitude to 0.5vpeak sine wave. ? r1, r2 setting please set r1, r2 so that the voltage peak of the ref_in pin is around 1.1v to 1.9v. e.g. vac=230v r1=680k ? , r2=2.7k ? ref_in peak = (230v 2) 2.7k / (680k+2.7k) = 1.286v ? c1 setting please connect capacitor of about 0.1uf to an alc_c pin. 4. function for triac dimming applications lv5012md contains the function for triac dimming. this function is operated by setting acs pin and dml pin. 4-1. triac on/off detection function if acs pin voltage is above 1.7v (internal fixed voltage), lv5012md recognize ?triac on?. if acs pin voltage is below 1.3v (internal fixed voltage), lv5012md recognize ?triac off?. the peak value of mosfet current is controlle d by the following reference voltage level. ? during triac on (acs > 1.7v) the reference voltage level is lower value of either ?alc_out? or ?vref(0.45v)?. ? during triac off (acs < 1.3v) the reference voltage level is internal fixed 0.1v. 4-2. bleeder current circuit when acs pin voltage is below 0.85v (internal fixed voltage), the built-in mosfet for breeder current is turned on and the bleeder current flows. rectified ac alc_c ref_in t 0.5v(constant) t alc_out
lv5012md no.a2186-13/16 the following shows a diagram of triac dimming. the peak value of mosfet current (ipk) is determined below ? ? during triac on (acs > 1.7v) in the case of ?alc_out < vref(0.45v)? rcs out alc ipk _ ? in the case of ?alc_out > vref(0.45v)? rcs v ipk 45 . 0 ? ? ? during triac off (acs< 1.3v) rcs v ipk 1 . 0 ? the triac on threshold of the rectified ac is determined below. vac_triac on = v r r r 7 . 1 4 4 3 ? ? the triac off threshold of the rectified ac is determined below. vac_triac off = v r r r 3 . 1 4 4 3 ? ? the bleeder operation threshold of t he rectified ac is determined below. vac_bleeder = v r r r 85 . 0 4 4 3 ? ? please set r3, r4 on the basis of these expressions according to triac dimmer. in addition, please set rbl between the rectified ac volt age and dml pin to satisfy the following expression. ?? v rbl v r r r 50 02 . 0 85 . 0 4 4 3 ? ? ? ? ? ? ? ? ? ? ? fet current alc_out t vref (0.45vtyp) triac off triac on reference 0.1v triac off rectified ac voltage acs t rectified triac out 1.7v 1.3v 0.85v triac on triac off bleeder mos gate bleeder mos off bleeder mos on bleeder mos on r1,r2 : external resistor for ref_in pin setting r3,r4 : external resistor for acs pin setting rbl : external resistor for bleeder current rcs : external resistor for current sense rbl : external resistor for bleeder current m1 : external power mosfet m2 : internal mosfet for bleeder current
lv5012md no.a2186-14/16 5. protection function 5-1. uvlo(under voltage lock out) if vin voltage is 7.3v or lower, then uvlo operates and the ic stops. when uvlo operates, the power supply current of the ic is about 80ua or lower. if vin voltage is 9v or higher, then the ic starts switching operation. 5-2. ocp(over current protection) cs pin is used to sense current in primary winding of transf ormer via external mosfet. this provides an additional level of protection in the event of a fault. if the voltage of the cs pin exceeds vcsocp(1.9v typ. )(a), the internal comparator will detect the event and turn off the mosf et. the peak switch current is calculated iocp(peak) [a] = vcsocp[v] / rcs[ ? ] the vin pin is pulled down to fixed level, keeping the cont roller latched off. the latch reset occurs when the user disconnects led from vac and lets the vin falls below th e vin reset voltage,uvlooff(7.3v typ.)(b). switching restarts when vin rises uvloon(9v typ.)(c). tilte outline monitor point 1 uvlo under voltage lock out vin voltage 2 ocp over current protection cs voltage 3 ovp over voltage protection vin voltage 4 otp over temperature protec tion pn junction temperature vin voltage cs voltage output stage on off on time vcsocp(1.9vtyp) uvloon(9vtyp) uvloff(7.3vtyp) time a c b uvloon (9vtyp) uvlooff (7.3vtyp) vin voltage output stage on off on vin voltage time
lv5012md no.a2186-15/16 5-3. ovp(over voltage protection) if the voltage of vin pin is higher than the internal refere nce voltage vinovp(27v typ.), switching operation is stopped. the stopping operation is kept until the voltage of vin is lo wer than vinovp(27v typ.). if the voltage of vin pin is lower than vinovp(27v typ.), the switching opera tion is restated. please see ovp waveform chart. 5-4. otp(over thermal protection) lv5012md has the gradually thermal pr otection system. if the junction temper ature exceeds 140 degrees celsius, 1 st stage protection mode is started. at 1 st stage protection mode, the internal reference level compared with cs pin voltage is set to 0.1v. and the led current is restricted to low values (approximately 5%). if the junction temperature exceeds 155 degrees celsius, the switching operation and startup circuit are stopped. please see otp waveform chart. 128c 143c 140c 155c ic junction temperature led current time time normal condition normal condition 1 st stage thermal protection thermal shut down normal condition 100% approximately 5%
lv5012md no.a2186-16/16 6. pwm dimming function enb pin is used for pwm dimming. led current is adjusted according to pwm pulse duty of enb input. when pwm pulse is high(2v to 5v), the ic stops switching operation. when pwm pulse is low(below 0.6v), the ic restarts switching. please see the wa veform chart of pwm dimming. a enb [note] enb input voltage is, above 2v ? output off below 0.6v ? output on a c enb out (fet gate) the outline of pwm dimming using enb pin enb output sage l on h off h l fet current (cs voltage) enb out (fet gate) led current 0 enb duty (high side)[%] 100[%] 0[%] max led current vs enb duty (outline) ordering information device package shipping (qty / packing) LV5012MD-AH mfp14s(225mil) (pb-free / halogen free) 1000 / tape & reel on semiconductor and the on logo are registered trademarks of semiconductor components industries, llc (scillc). scillc owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a listing of scillc?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent-marking.pdf. scillc reserves the right to make changes without further notice to any products herein. scillc mak es no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability ar ising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequentia l or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s techn ical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorize d for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other appli cation in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of persona l injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture o fthe part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws a nd is not for resale in any manner. ps

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