1/4 rev. b structure silicon monolithic integrated circuit name of product dc-ac inverter control ic type ? function ?2ch control with half-bridge ?lamp current and voltage sense feed back control ?sequencing easily achieved with soft start control ?short circuit protection with timer latch ?under voltage lock out ?short circuit protection with over voltage ?mode-selectable the operating or stand-by mode by stand-by pin ?synchronous operating the other BD9885FV ics ?burst mode controlled by pwm and dc input ?variable to standard voltage for lamp current feed back absolute maximum ratingsta = 25 parameter symbol limits unit supply voltage v cc 15 v operating temperature range topr -40+90 storage temperature range tstg -55+125 power dissipation pd 850 * mw maximum junction temperature tjmax +125 * pd derated at 8.5mw/ for temperature above ta = 25 (when mounted on a pcb 70.0mm70.0mm1.6mm) recommended operating condition parameter symbol limits unit supply voltage v cc 5.014.0 v ct oscillation frequency f ct 20150 khz bct oscillation frequency f bct 0.050.50 khz
2/4 rev. b ???ta=25vcc=7v parameter symbol limits unit conditions min. typ. max. whole device operating current icc1 11.0 17.0 ma ct=0.5v stand-by current icc2 2 10 a over voltage detect fb over voltage detect voltage vovf 2.20 2.40 2.60 v stand by control stand-by voltage h vsth 1.4 vcc v system stand-by voltage l vstl -0.3 0.5 v system stand-by hysteresis Svst 0.10 0.25 0.40 v timer latch timer latch voltage vcp 1.8 2.0 2.2 v timer latch current icp 0.5 1.0 1.5 a osc block osc constant current i ct 1.35/rt 1.5/rt 1.65/rt a osc max voltage vosch 1.8 2.0 2.2 v f ct =60khz osc min voltage voscl 0.3 0.5 0.7 v f ct =60khz max duty maxduty 44 46.5 49 % f ct =60khz soft start current iss 1.0 2.0 3.0 a is comp detect voltage visc 0.45 0.50 0.55 v ss comp detect voltage vss 2.0 2.2 2.4 v srt on resistance rsrt 200 400 uvlo block operating voltage vuvloh 4.100 4.300 4.500 v lock out voltage vuvlol 3.900 4.100 4.300 v operating voltage (external uvlo) vuvlo1 1.900 2.000 2.100 v lock out voltage (external uvlo) vuvlo2 2.100 2.200 2.300 v feed back block is threshold voltage1 vis1 1.220 1.250 1.280 v vref=open is threshold voltage2 vis2 - vref2 - v vref=applying voltage vs threshold voltage vvs 1.220 1.250 1.280 v is source current 1 iis1 1.5 a duty=2.0v is source current 2 iis2 13.0 20.0 27.0 a duty=0vis=0.5v vs source current ivs 1.0 a output block pch output voltage h voutph vcc-0.3 vcc-0.1 v nch output voltage h voutnh vcc-0.3 vcc-0.1 v pch output voltage l voutpl 0.1 0.3 v nch output voltage l voutnl 0.1 0.3 v pch output sink resistance rsinkp 8 16 isink = 10ma pch output source resistance rsourcep 10 20 isource = 10ma nch output sink resistance rsinkn 8 16 isink = 10ma nch output source resistance rsourcen 10 20 isource = 10ma burst mode block bosc max voltage vburh 1.94 2.0 2.06 v f bct =0.2khz bosc min voltage vburl 0.4 0.5 0.6 v f bct =0.2khz bosc constant current i bct 1.35/brt 1 .5/ brt 1.65/brt a reg block reg output voltage vreg 3.038 3.100 3.162 v reg source current ireg 5.0 ma vref voltage vref1 1.220 1.250 1.280 v vref=open vref input voltage range vref2 0.60 - 1.60 v vref=applying voltage comp block over voltage detect vcomph 2.20 2.5 2.80 v under voltage detect vcompl 0.590 0.640 0.690 v protect clock normal output voltage vph 2.9 3.1 3.3 v protect output voltage vpl 0.5 v this product is not designed for normal operation with in a ra dio active environment.
3/4 rev. b package dimensions block diagram pin description pin no. pin name function 1 duty control pwm mode and burst mode 2 brt external resistor from brt to gnd for adjusting the burst triangle oscillator 3 bct external capacitor from bct to gnd for adjusting the burst triangle oscillator 4 rt external resistor from srt to rt for adjusting the triangle oscillator 5 srt external resistor from srt to rt for adjusting the triangle oscillator 6 ct external capacitor from ct to gnd for adjusting the triangle oscillator 7 gnd ground 8 fb1 error amplifier output 9 is1 error amplifier input 10 vs1 error amplifier input 11 fb2 error amplifier output 12 is2 error amplifier input 13 vs2 error amplifier input 14 vref reference voltage for isnece error amplifier 15 fail protect clock output 16 stb stand-by switch 17 comp1 under, over voltage detect for 1ch 18 comp2 under, over voltage detect for 2ch 19 uvlo external under voltage lock out 20 reg internal regulator output 21 ss external capacitor from ss to gnd for soft start control 22 scp external capacitor from scp to gnd for timer latch 23 p2 fet driver for 2ch 24 n2 fet driver for 2ch 25 pgnd ground for fet drivers 26 n1 fet driver for 1ch 27 p1 fet driver for 1ch 28 vcc supply voltage input BD9885FV lot no. ssop-b28 (unit:mm) device mark stb block systemon/off osc bosc ct vcc rt brt bct duty uvlo p1 n1 stb is1 duty block reg block uvlo block vcc reg vref f/b block pwm block logic block output block ss ct vs1 ss fb1 p2 n2 is2 f/b block pwm block logic block block ss ct vs2 fb2 fail protect block gnd pgnd comp1 comp2 scp srt vcc vcc output (include burr 10.35 )
4/4 rev. b ( k i 5 k o r n k h k g f u v t w e v w t g q h c $ k r q n c t + % p substrate parasitic diode gnd n p 9 p 9 resistance 9 transistor (npn) 9? 9? 9? 9? other adjacent components parasitic diode (pinb) (pina) p 9 gnd p substrate gnd n n b c e n n (pina) (pinb) parasitic diode gnd gnd parasitic diode c b e
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