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ics for compact disc/cd-rom player 1 AN8789FB 4-channel driver ic for portable cd/md player n overview the AN8789FB is a low power consumption h- bridge system 4-channel driver with a switching regula- tor incorporating dc-dc converter which allows for low supply voltage operation. it is especially suited for a por- table cd/md player. n features low power consumption due to pwm control of driver supply by an external circuit. chargeable battery driving is possible due to a built-in rapid charging circuit. dc-dc converter can be constructed with an external circuit. rationalization of set design due to a built-in reset circuit with mute and battery voltage detection circuit. ripple filter for d/a converter can be constructed with one external capacitor. thermal shut-down circuit built-in (with hysteresis) n applications portable cd/md player cd/md player qfp044-p-1010c unit: mm 10.000.20 12.000.20 33 23 111 12 22 44 34 12.000.20 10.000.20 (1.00) (1.00) 0.80 0.35 +0.10 C0.05 seating plane 0.100.10 1.950.20 (1.00) 0.500.20 0 to 10 0.15 +0.10 C0.05 maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://panasonic.net/sc/en
AN8789FB ics for compact disc/cd-rom player 2 n block diagram 40 5 38 23 2 9 10 4 39 1 35 34 3 28 32 31 30 29 24 25 26 27 36 21 22 16 18 19 20 17 43 37 44 pwmg tb sgnd info v ref intr ldon insp pc intv trvstop av dd crip sv cc in fb spro ded aref fo + fo - tr + tr - sp + sp - tv + tv - pgnd reset mrst emp v sen start ct pv cc1 42 i out 41 pv cc2 33 i cont 15 drv cc clk power out pwm maximum value btl btl btl starter triangular wave thermal shut-down switching circuit ripple filter btl absolute value absolute value absolute value absolute value rapid charging circuit 14 11 12 7 6 8 initial setting of starter changeover power off
ics for compact disc/cd-rom player AN8789FB 3 pin no. symbol description 23 trvstop driver on-off control pin 24 tr - driver output pin 25 tr + driver output pin 26 fo - driver output pin 27 fo + driver output pin 28 pgnd gnd pin 29 sp + driver output pin 30 sp - driver output pin 31 tv + driver output pin 32 tv - driver output pin 33 i cont charge current setting pin 34 mrst muting reset output pin 35 emp empty detection output pin 36 v c driver supply voltage pin 37 tb pwm circuit output pin 38 clk external sync. input pin 39 start oscillation start input pin 40 power power on-off input pin 41 pv cc2 power supply pin 42 i out charge-cum-battery check pin 43 sgnd gnd pin 44 pwmg pwm loop gain adjustment pin n pin descriptions pin no. symbol description 1v sen empty detection input pin 2pv cc1 power supply pin 3 reset reset output pin 4 ded dead time input pin 5 out dc-dc converter output pin 6 fb error amp. output pin 7 in error amp. input pin 8 spro short circuit protection input pin 9 ct triangular oscillation pin 10 aref 1/2 av dd output pin 11 crip ripple rejection capacitor pin 12 sv cc power supply pin 13 n.c. ? 14 av dd ripple filter output pin 15 drv cc power supply pin 16 v ref 1/2 v cc inpiut pin 17 info driver input pin 18 intr driver input pin 19 ldon driver on-off control pin 20 insp driver input pin 21 pc driver on-off control pin 22 intv driver input pin parameter symbol rating unit supply voltage pv cc1 , pv cc2 14.5 v sv cc , drv cc 6 supply voltage range pv cc1 , pv cc2 - 0.3 to + 14.5 v sv cc , drv cc - 0.3 to + 6 v sen pin max. apply voltage v 1max 14.5 v supply current 1 i svcc 50 ma supply current 2 i drvcc 50 ma supply current 3 i pvcc1 100 ma supply current 4 i pvcc2 50 ma driver output current i o 500 ma n absolute maximum ratings note) 1. do not apply external currents or voltages to any pins not specifically mentioned. for circuit currents, ' + ' denotes currents flowing into the ic, and ' - ' denotes current flowing out of the ic.
AN8789FB ics for compact disc/cd-rom player 4 parameter symbol range unit supply voltage pv cc1 1.5 to 14 v pv cc2 3 to 14 sv cc , drv cc 2.7 to 5.5 n recommended operating range parameter symbol rating unit power dissipation * 1, * 2 p d 490 mw operating ambient temperature * 1 t opr - 25 to + 75 c storage temperature * 1 t stg - 55 to + 150 c n absolute maximum ratings (continued) note) 1. do not apply external currents or voltages to any pins not specifically mentioned. for circuit currents, ' + ' denotes currents flowing into the ic, and ' - ' denotes current flowing out of the ic. 2. * 1: except for the operating ambient temperature and storage temperature, all ratings are for t a = 25 c. * 2: t a = 85 c. for the independent ic without a heat sink. refer to " n application notes" at mounting on pcb. n electrical characteristics at sv cc = drv cc = 3.2 v, pv cc1 = 2.4 v, pv cc2 = 0 v, t a = 25 c parameter symbol conditions min typ max unit common block sv cc power supply current at i 12q pv cc1 = 2.4 v ? 3 4.5 ma no load sv cc = drv cc = 3.2 v, v ref = 1.6 v drv cc power supply current at i 15q pv cc1 = 2.4 v ? 2.8 4.2 ma no load sv cc = drv cc = 3.2 v, v ref = 1.6 v pv cc1 power supply current at i 2q pv cc1 = 2.4 v ? 1.7 3 ma no load sv cc = drv cc = 3.2 v, v ref = 1.6 v pv cc1 bias current i 2l pv cc1 = 14 v ?? 100 m a sv cc = drv cc = 0 v, v ref = 0 v at i out pin open i 41max pv cc1 = 0 v, pv cc2 = 5 v 111825ma pv cc2 power supply current sv cc = drv cc = 0 v, v ref = 0 v i cont pin short circuit. dc-dc converter block error amplifier sv cc pin threshold voltage v 12th i fb = 0 m a 3.25 3.42 3.59 v fb pin output voltage v 6 + in = 0.8 v, i fb = - 100 m a 1.6 1.8 2 v (source current) fb pin output voltage v 6 - in = 1.5 v, i fb = 100 m a ?? 0.25 v (sink current) * note) * : output voltage out be kept at low-level in measuring an output voltage (sink current) of fb pin.
ics for compact disc/cd-rom player AN8789FB 5 n electrical characteristics at sv cc = drv cc = 3.2 v, pv cc1 = 2.4 v, pv cc2 = 0 v, t a = 25 c (continued) parameter symbol conditions min typ max unit short circuit protection circuit spro pin bias voltage v 8b v in = 1.5 v, power = high 0.77 0.86 0.94 v spro pin impedance r 8 v in = 1.5 v 22 32 45 k w spro pin output voltage v 8fb power = high, v in = 0.8 v 1.3 1.8 2.3 v (at fb = high) spro pin output voltage v 8po power = low, v in = 1.5 v 1.9 2.5 3 v (at power = low) spro pin threshold voltage v 8th v ct = 0.2 v, v in = 1.5 v 1.03 1.11 1.2 v output block high-level voltage at v 5h v ct = 0 v, i out = - 10 ma 1.08 1.5 1.71 v out pin in self running v fb = 0.7 v low-level voltage at v 5l v ct = 1.0 v, i out = + 10 ma 0.15 0.3 0.4 v out pin in self running v fb = 0.5 v high-level at out pin at v 5hs v ct = 1.0 v, pv cc1 = 1.5 v 0.7 0.92 1.3 v starting i out = - 1.1 ma, sv cc = 0 v pulse max. duty at out pin at d 5s pv cc1 = 5.0 v, sv cc = 0.0 v 53 64 75 % starting pulse max. duty at out pin in d 5c v in = 0.8 v 65 75 85 % clk sync. pulse max. duty at out pin in d 5f v in = 0.8 v 75 81 87 % self running triangular oscillation frequency f 9f 53 64 75 khz at ct pin in self running triangular oscillation frequency f 9s pv cc1 = 5 v, sv cc = 0 v 70 90 100 khz at ct pin at starting output current at ct pin in i o - f v ct = 0.3 v 42 60 82 m a self running (source current) output current ratio at ct pin in i o + /i o - v ct = 1 v 1.25 1.55 2.00 ? self running (rfee) (source current/sink current) triangular wave oscillating v 2min sv cc = 0 v 1.5 ?? v pv cc1 voltage dead time pin block ded pin impedance r 4 v in = 1.5 v, v power = 3 v 406080 k w v start = 3 v ded pin bias voltage v 4b v in = 1.5 v, v power = 3 v 0.72 0.8 0.92 v v start = 3 v
AN8789FB ics for compact disc/cd-rom player 6 n electrical characteristics at sv cc = drv cc = 3.2 v, pv cc1 = 2.4 v, pv cc2 = 0 v, t a = 25 c (continued) parameter symbol conditions min typ max unit power pin block power pin high-level input v 40thh v in = 1.5 v, i ded = 0 m a2 ?? v threshold voltage v start = 3 v power pin low-level input v 40thl v in = 1.5 v, i ded = 0 m a ?? 0.8 v threshold voltage v start = 3 v start pin block start pin bias voltage i 39b v start = 0 v, sv cc = drv cc = 0 v172941 m a pv cc1 = 2.4 v start pin input threshold v 39th v ct = 1 v, sv cc = drv cc = 0 v 1.4 1.7 2.0 v voltage clk pin block clk pin input threshold vthh v 38thh f in = 88.2 khz 2.0 ?? v clk pin input threshold vthl v 38thl f in = 88.2 khz ?? 0.8 v empty detection block emp pin detection voltage v 35th1 i iout = - 2 m a 1.7 1.8 1.9 v (dry battery) emp pin detection voltage v 35th3 v iout = 0 v 2.1 2.22 2.3 v (rechargeable battery) emp pin hysteresis width from empty v 35h i iout = - 2 m a 306082mv detection to recovery (dry battery) emp pin hysteresis width from empty v 35l v iout = 0 v 306082mv detection to recovery (rechargeable battery) emp pin output voltage v 35o i c = + 1.0 ma, v sen = 1 v ?? 0.5 v emp pin output leak current i 35l v emp = 3.2 v, v sen = 3.0 v ?? 1.0 m a v sen pin input resistance r 1 v iout = 0 v 16.5 20.8 25.0 k w v sen pin input leak current i 1l sv cc = 0 v, v sen = 4.5 v ?? 1 m a i out pin low-level detection v 42thl v 1thl = pv cc1 - v 42 1.5 ?? v voltage allowable leak current at i out i 42thh must be hi-z mode when i out pin - 2.0 ?? m a pin "hi-z" output current is - 2 m a reset output block sv cc pin reset threshold voltage h 12 reset threshold voltage 0.85 0.9 0.95 ? ratio error amp. threshold voltage reset pin low-level output v rl i reset = + 1.0 ma ?? 0.5 v voltage reset pin output impedance v rh i reset = 0 ma 55 83 110 k w mrst pin output voltage v 340 i mrst = - 1.0 ma, v start = sv cc = 0 v 1.8 ? 2.4 v (at reset, at starter) mrst pin output leak current i 34l v mrst = 0 v - 1.0 ?? m a
ics for compact disc/cd-rom player AN8789FB 7 n electrical characteristics at sv cc = drv cc = 3.2 v, pv cc1 = 2.4 v, pv cc2 = 0 v, t a = 25 c (continued) parameter symbol conditions min typ max unit start to normal changeover sv cc pin starter changeover v 12th1 2.3 2.5 2.7 v voltage at starting ? at self running sv cc pin starter changeover v 12th2 2.1 2.3 2.5 v voltage at self running ? at starting sv cc pin starter changeover v 12th 0.12 0.18 0.24 v voltage hysteresis width initial setting sv cc pin initial setting release v 12dk 1.6 1.8 2.0 v voltage ripple filter block av dd pin potential difference v 14 i avdd = - 5 ma 0.24 0.28 0.32 v between sv cc and av dd crip = open av dd pin saturation voltage v 14sat i avdd = - 5 ma, v crip = sv cc ?? 0.15 v crip pin input resistance r 11 sv cc = 0 v, i crip = 25 m a 9.0 12.5 16.0 k w av dd pin ripple rejection factor rr 14 v in = 35 mv rms , f in = 20 khz 40 ?? db 1/2 av dd circuit aref pin output voltage v aref i aref = 0 ma, v aref = av dd - 2v aref - 100 0 100 mv aref pin output impedance 1 d v aref1 i aref = + 400 m a 560 800 1 040 mv aref pin output impedance 2 d v aref2 i aref = - 100 m a - 140 - 200 - 260 mv aref pin discharge current at i arst sv cc = av dd = 1.0 v 1.4 2.0 2.6 ma reset v aref = 1.0 v, v ref = 0 charging current i cont pin voltage v icont pv cc2 = 4.5 v, i cont = 0.05 ma 1.1 1.2 1.3 v i out current i out pv cc2 = 4.5 v, v iout = 1.0 v 200 265 350 ma i cont = 0.7 ma i out leak current i oleak pv cc2 = 4.5 v, sv cc = 0 v ?? 2 m a pv cc1 = v iout = 14 v i cont pin open pwm comp. pwmg amp. transfer gain g pwm v ref = 1.6 v, v info = 1.4 v 1/6.0 1/7.2 1/8.5 1/k w tb pin sink current ability i tb v info = 2.1 v 9 10 15 ma v c level shift v c v info = 1.7 v 0.35 0.45 0.55 v v c leak current i vcl v c = 9 v ?? 8 m a over voltage protection circuit v senoff 8.0 8.4 9.0 v detection voltage (v sen pin)
AN8789FB ics for compact disc/cd-rom player 8 n electrical characteristics at sv cc = drv cc = 3.2 v, pv cc1 = 2.4 v, pv cc2 = 0 v, t a = 25 c (continued) parameter symbol conditions min typ max unit driver block (focus) transfer gain ( + )g f + 12 14 16 db transfer gain relative ratio ( + / - )g + /g - - 20 2 db info pin dead zone in reference idzfo - 10 ? 10 mv to input info pin input internal resistance r 16 91113k w output offset voltage v foff - 50 ? 50 mv (out) saturation voltage (lower side tr.) v fsatl i d = 300 ma, ldon = 3.0 v ? 0.3 0.5 v saturation voltage (upper side tr.) v fsatu i d = 300 ma, ldon = 3.0 v ? 0.4 0.6 v fo + pin max. drive voltage v f + pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v info = 2.5 v fo - pin max. drive voltage v f - pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v info = 0.7 v ldon pin high-level threshold v th18h v ref = 1.6 v, info = 1.8 v 2.0 ?? v voltage ldon pin low-level threshold v th18l v ref = 1.6 v, info = 1.8 v ?? 1.0 v voltage v ref pin driver on-off v th15h info = 1.8 v 1.25 ?? v high-level threshold voltage v ref pin driver on-off v th15l info = 1.8 v ?? 0.75 v low-level threshold voltage (tracking) transfer gain ( + )g tr( + ) 12 14 16 db transfer gain relative ratio ( + / - )g + /g - - 20 2 db intr pin dead zone in reference idztr - 10 ? 10 mv to input intr pin input internal resistance r 17 91113k w output offset voltage v troff - 50 ? 50 mv (out) saturation voltage (lower side tr.) v trsatl i d = 300 ma, ldon = 3.0 v ? 0.3 0.5 v saturation voltage (upper side tr.) v trsatu i d = 300 ma, ldon = 3.0 v ? 0.4 0.6 v tr + pin max. drive voltage v tr + pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v intr = 2.5 v tr - pin max. drive voltage v tr - pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v intr = 0.7 v (spindle) transfer gain ( + )g sp( + ) 21.5 23.5 24.5 db transfer gain relative ratio ( + / - )g + /g - - 20 2 db insp pin dead zone in reference idzsp - 10 ? 10 mv to input insp pin input internal resistance r 19 6 7.5 9 k w
ics for compact disc/cd-rom player AN8789FB 9 n electrical characteristics at sv cc = drv cc = 3.2 v, pv cc1 = 2.4 v, pv cc2 = 0 v, t a = 25 c (continued) parameter symbol conditions min typ max unit driver block (continued) output offset voltage v spoff - 100 ? 100 mv (out) saturation voltage (lower side tr.) v spsatl i d = 300 ma, ldon = 3.0 v ? 0.3 0.5 v saturation voltage (upper side tr.) v spsatu i d = 300 ma, ldon = 3.0 v ? 0.4 0.6 v sp + pin max. drive voltage v sp + pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v insp = 2.0 v sp - pin max. drive voltage v sp - pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v insp = 1.2 v pc pin high-level threshold v th20h v ref = 1.6 v, insp = 1.7 v 2.0 ?? v voltage pc pin low-level threshold v th20l v ref = 1.6 v, insp = 1.7 v ?? 1.0 v voltage (traverse) transfer gain ( + )g tv( + ) 12 14 16 db transfer gain relative ratio ( + / - )g + /g - - 20 2 db intv pin dead zone in reference idztv - 10 ? 10 mv to input intv pin input internal resistance r 21 91113k w output offset voltage v tvoff - 50 ? 50 mv (out) saturation voltage (lower side tr.) v tvsatl i d = 300 ma, ldon = 3.0 v ? 0.3 0.5 v saturation voltage (upper side tr.) v tvsatu i d = 300 ma, ldon = 3.0 v ? 0.4 0.6 v tv + pin max. drive voltage v tv + pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v insp = 2.0 v tv - pin max. drive voltage v tv - pv cc1 = 4.0 v, sv cc = 3.2 v ?? 1.2 v insp = 1.2 v trvstop pin v th22h 2.0 ?? v threshold voltage ( high-level ) trvstop pin v th22l ?? 1.0 v threshold voltage ( low-level ) trvstop pin i 22 5812ma brake current at high-level
AN8789FB ics for compact disc/cd-rom player 10 n electrical characteristics at sv cc = drv cc = 3.2 v, pv cc1 = 2.4 v, pv cc2 = 0 v, t a = 25 c (continued) parameter symbol conditions min typ max unit thermal shutdown operating t on ? 150 ? c temperature driver: operation ? stop thermal shutdown operating dt ? 30 ? c temperature hysteresis width min. output pulse width in pt min ? 0.7 ?m s sync., at out pin av dd pin output noise rr 13 ?? 10 m v[rms] charge circuit thermal shutdown tc.on ? 150 ? c operation temperature design reference data note) the characteristics listed below are theoretical values based on the ic design and are not guaranteed. n application notes p d ? t a curves of qfp044-p-1010c p d ? t a 0 0 25 50 75 100 125 150 1 300 1 600 1 500 1 100 1 000 800 817 700 600 500 400 300 200 100 1 200 1 582 1 400 900 ambient temperature t a ( ? c) power dissipation p d (mw) mounted on standard board (glass epoxy: 75 mm 75 mm t 0.8 mm) r th(j-a) = 79 ? c/w p d = 1 582 mw (25 ? c) independent ic without a heat sink r th(j-a) = 153 ? c/w p d = 817 mw (25 ? c)
ics for compact disc/cd-rom player AN8789FB 11 n application circuit example pwmg tb info v ref intr ldon insp pc intv trvstop av dd crip sv cc in fb spro ded aref + - + - + - + - reset mrst emp v sen start ct pv cc1 i out pv cc2 i cont drv cc clk power out dc/dc converter from microcomputer from ac adapter fo tr sp tv rapid charging circuit 40 5 38 23 2 9 10 4 39 1 35 34 3 28 32 31 30 29 24 25 26 27 36 21 22 16 18 19 20 17 43 37 44 42 41 33 15 pwm maximum value btl btl btl starter triangular wave thermal shut-down switching circuit ripple filter btl absolute value absolute value absolute value absolute value 14 11 12 7 6 8 initial setting of starter changeover power off
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