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| 1/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. high performance regulators for pcs switching regulator controller for graphic chip cores bd9560muv description bd9560muv is a switching regulator controller with high ou tput current which can achieve low output voltage (0.412v ~ 1.2875v) from a wide input voltage range (4.5v ~ 25v). t he setting of output voltage depends on dac built in. high efficiency for the switching regulator can be realized by ut ilizing an external n-mosfet power transistor. sllm (simple light load mode) technology is also integrated to improve effici ency in light load mode, providing high efficiency over a wide load range. for protection and ease of use, the soft start function, variable fr equency function, short circuit protection function with timer latch, over voltage protection, over curr ent protection and power good function are all built in. this switching regulator is specially designed for gmch. features 1) switching regulator controller 2) light load mode and continuous mode changeable 3) thermal shut down circuit built-in (tsd) 4) under voltage lockout circuit built-in (uvlo) 5) over current protection circuit built-in (ocp) 6) over voltage protection circuit built-in (ovp) 7) short circuit protection with timer-latch built-in 8) power good circuit built-in 9) soft start function to minimize rush current during startup 10) switching frequency variable (f=200 khz ~ 600 khz) 11) vqfn032v5050 package applications laptop pc, desktop pc, digital components maximum absolute ratings (ta=25 ) parameter symbol ratings unit input voltage 1 vcc 7 *1*2 v input voltage 2 pvcc 7 *1*2 v input voltage 3 vin 35 *1*2 v boot voltage boot 35 *1*2 v boot-sw voltage boot-sw 7 *1*2 v hg-sw voltage hg-sw 7 *1*2 v lg voltage lg pvcc v vref voltage vref vcc v vron input voltage vron 7 *1 v logic input voltage cl/scp/ss/ton/ sllm/vid4-0/pwrgd_c/dac_c vcc v logic output voltage 1 pwrgd 7 v logic output voltage 2 sus_out vcc v power dissipation1 pd1 0.38 *3 w power dissipation2 pd2 0.88 *4 w operating temperature range topr -10 ~ +100 storage temperature range tstg -55 ~ +150 junction temperature tjmax +150 *1 not to exceed pd.. *2 maximum voltage that can be proof against instantaneous applied voltage such as serge, back el ectromotive voltage or continu ous pulse applied voltage (duty ratio : less than 10%) *3 reduced by 3.0mw for each increase in ta of 1 over 25 (when don?t mounted on a heat radiation board ) *4 reduced by 7.0mw for increase in ta of 1 over 25 . (when mounted on a board 70.0mm 70mm 1.6mm glass-epoxy pcb.) no.10030ect10
technical note bd9560muv 2/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. operating conditions (ta=25 ) parameter symbol ratings unit min. max. input voltage 1 vcc 4.5 5.5 v input voltage 2 pvcc 4.5 5.5 v input voltage 3 vin 4.5 25 v boot voltage boot 4.5 30 v sw voltage sw -2 25 v boot-sw voltage boot-sw 4.5 5.5 v vron input voltage vron -0.3 5.5 v logic input voltage cl/scp/ss/ton/sllm /vid4-0/pwrgd_c/da c_c -0.3 vcc+0.3 v logic output voltage 1 pwrgd - 5.5 v logic output voltage 2 sus_out -0.3 vcc v *this product should not be used in a radioactive environment. electrical characteristics (unless otherwise noted, ta=25 technical note bd9560muv 3/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. electrical characteristics (unless otherwise noted, ta=25 ? ? ? ? technical note bd9560muv 4/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. dac code table state vron vid4 vid3 vid2 vi d1 vid0 vccgfx vdac sus out render performance states 1 0 0 0 0 0 1.28750v 1.2811v 0 1 0 0 0 0 1 1.26175v 1.2554v 0 1 0 0 0 1 0 1.23600v 1.2298v 0 1 0 0 0 1 1 1.21025v 1.2042v 0 1 0 0 1 0 0 1.18450v 1.1786v 0 1 0 0 1 0 1 1.15875v 1.1530v 0 1 0 0 1 1 0 1.13300v 1.1273v 0 1 0 0 1 1 1 1.10725v 1.1017v 0 1 0 1 0 0 0 1.08150v 1.0761v 0 1 0 1 0 0 1 1.05575v 1.0505v 0 1 0 1 0 1 0 1.03000v 1.0249v 0 1 0 1 0 1 1 1.00425v 0.9992v 0 1 0 1 1 0 0 0.97850v 0.9736v 0 1 0 1 1 0 1 0.95275v 0.9480v 0 1 0 1 1 1 0 0.92700v 0.9224v 0 1 0 1 1 1 1 0.90125v 0.8967v 0 1 1 0 0 0 0 0.87550v 0.8711v 0 1 1 0 0 0 1 0.84975v 0.8455v 0 render suspend states 1 1 0 0 1 0 0.82400v 0.8199v 1 1 1 0 0 1 1 0.79825v 0.7943v 1 1 1 0 1 0 0 0.77250v 0.7686v 1 1 1 0 1 0 1 0.74675v 0.7430v 1 1 1 0 1 1 0 0.72100v 0.7174v 1 1 1 0 1 1 1 0.69525v 0.6918v 1 1 1 1 0 0 0 0.66950v 0.6662v 1 1 1 1 0 0 1 0.64375v 0.6405v 1 1 1 1 0 1 0 0.61800v 0.6149v 1 1 1 1 0 1 1 0.59225v 0.5893v 1 1 1 1 1 0 0 0.56650v 0.5637v 1 1 1 1 1 0 1 0.54075v 0.5380v 1 1 1 1 1 1 0 0.51500v 0.5124v 1 1 1 1 1 1 1 0.41200v 0.4099v 1 0 technical note bd9560muv 5/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. reference data 0 0.5 1 1.5 2 2.5 3 -101030 507090 ta( 1.15 1.2 1.25 1.3 1.35 024 6810 io[a] vcc_core[v] v in=5v v in=12v v in=21v setup voltage+2% setup voltage-2% vnom+5% vnom-5% 0 200 400 600 800 1000 012345 ton[v] on time[ns] dac=0.412v dac=0.84975v dac=1.2875v 1ch vout (20mv/div) 2ch hg (5v/div) 3ch lg (5v/div) 4ch il (5a/div) 1ch vout (20mv/div) 2ch hg (10v/div) 3ch lg (5v/div) 4ch il (5a/div) 1ch vout (20mv/div) 2ch hg (10v/div) 3ch lg (5v/div) 4ch il (5a/div) 1ch vout (20mv/div) 2ch hg (5v/div) 3ch lg (5v/div) 4ch il (5a/div) 1ch vout (20mv/div) 2ch hg (10v/div) 3ch lg (5v/div) 4ch il (5a/div) 1ch vout (20mv/div) 2ch hg (10v/div) 3ch lg (5v/div) 4ch il (5a/div) technical note bd9560muv 6/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. reference data 200mv/div 2v/div 2v/div 200mv/div 5a/div 2v/div 200mv/div vcc_core vr_on 5a/di v 2v/di v 100mv/div 2v/div 100mv/div 5a/div 1ch hg (5v/div) 2ch lg (5v/div) 3ch vout (50mv/div) 4ch iout (5a/div) 1ch hg (5v/div) 2ch lg (5v/div) 3ch vout (50mv/div) 4ch iout (5a/div) 1ch hg (10v/div) 2ch lg (5v/div) 3ch vout (50mv/div) 4ch iout (5a/div) 1ch hg (5v/div) 2ch lg (5v/div) 3ch vout (50mv/div) 4ch iout (5a/div) 1ch hg (5v/div) 2ch lg (5v/div) 3ch vout (50mv/div) 4ch iout (5a/div) 1ch hg (10v/div) 2ch lg (5v/div) 3ch vout (50mv/div) 4ch iout (5a/div) technical note bd9560muv 7/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. block diagram, application circuit pin configuration pin function table pin no. pin name pin no. pin name 1 pwrgd_c 17 isp 2 pwrgd 18 ism 3 scp 19 lsm 4 ss 20 lsp 5 vid0 21 fb 6 vid1 22 ton 7 vid2 23 sus_out 8 vid3 24 sllm 9 vid4 25 vron 10 dac_c 26 pgnd 11 sgnd 27 lg 12 gnd 28 pvcc 13 vcc 29 sw 14 vref 30 hg 15 nc 31 boot 16 cl 32 vin refernce block delay driver logic r q s controller delay thermal protection 5bit dac delay vref vid4 vid3 vid2 vid1 vid0 sgnd dac_c tsd scp short circuit vdac ism scp uvlo vr_on ss vdac vron vcc gnd ism ovp over voltage protect vdac ton cl ilim ss soft start block ss uvlo isp ism lsp lsm fb lg pgnd pvcc boot hg sw pwrgd pwrgd_c vdac ism ss vdac uvlo ovp tsd ilim scp under voltage lock out vref uvlo vin vin v_3 sllm vid(4) vid(3) vid(2) vid(1) vid(0) vss_sns 25 13 32 12 1 2 31 30 29 28 27 26 21 19 20 18 17 4 16 24 23 sus_out 22 3 10 11 5 6 7 8 9 14 1.5v vout (unit : mm) vqfn032v5050 technical note bd9560muv 8/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. pin descriptions ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? technical note bd9560muv 9/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. timing chart ? ? ? ? ??? ??? ??? ??? technical note bd9560muv 10/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. external component selection 1. inductor (l) selection ??? ??? ??? ??? Q ??? ??? technical note bd9560muv 11/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. 4. mosfet selection 5. setting detection resistance 6. setting load line slope pmain=p ron +p gate +p tran psyn=p ron +p gate the over current protection functi on detects the output ripple current bottom value. this parameter (setting value) is determined as in formula (13) below. vin l co vout synchronous switch main switch vin l co vout current limit il r loss on the main mosfet (ron: on-resistance of fet; ciss: fet gate capacity; f: switching frequency crss: fet inverse transfer function; i drive : gate bottom current) loss on the synchronous mosfet v in -v out vin ??? ??? ??? ??? technical note bd9560muv 12/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. i/o equivalent circuit 1pin(pwrgd_c) 2pin(pwrgd) 3pin(scp) 4pin(ss) 5pin(vid0) ~ 9pin(vid4) 10pin(dac_c) 14pin(vref) 16pin(cl),17pin(isp) 18pin(ism) 19pin(lsm),20pin(lsp),22pin(ton) 21pin(fb) 23pin(sus_out) 24pin(sllm) 25pin(vron) 27pin(lg) 29pin(sw) 30pin(hg) 31pin(boot) 32pin(vin) vr_on vin vref ss pwrgd_c pwrgd gnd sllm vcc cl isp scp sus_out vcc ism boot hg sw vdd lg boot boot hg boot s w hg vid[0:4] lsm lsp ton dac_c fb vcc technical note bd9560muv 13/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. evaluation board circuit(application for pos cap) r20 c17 vin vron vin vcc vid0 vid4 vid2 vid1 vid3 vcc vcc gnd vcc vref sw6 sw1 sw2 sw3 sw4 sw5 r8 r3 r4 r6 r7 r1 c1 pwrgd vref ton pwrgd_c scp ss dac vcc gnd c4 c2 c5 c6 c7 c8 c9 r14 r11 r15 r16 vcc vin r38 r37 r34 r28 r27 r22 r21 r24 r25 r29 r33 r31 r32 r36 c14 d2 tr2a l1 tr1a tr1b pgnd vcc core vin_ic vin_ic vcc pvcc bts hg sw lg pgnd isp ism fb lsm lsp sgnd sllm sus_out 1 3 4 5 6 9 10 11 12 13 14 2 21 19 20 22 23 24 25 26 28 29 18 17 27 30 32 31 vref cl c3 r13 16 pvcc vin p_mon 15 p_mon pulse_i n vcc_core vref cl 3.3v 3.3v vcc_core r2 r9 r10 r12 r17 r18 c10 sw7 c11 c12 r39 r40 r41 c13 d1 c16 c18 c19 c20 c21 c22 c23 r0 c24 r42 r43 tr3b gnd r19 r45 r44 tr3a r30 vin_ic c15 r23 c25 r35 r26 vin_fet vin_fet c_ton r5 technical note bd9560muv 14/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. evaluation board parts list part no value company part name part no value company part name r0 0 ? rohm mcr03 series r41 - - - r1 - - - r42 - - - r2 - - - r43 - - - r3 0 ? rohm mcr03 series r44 - - - r4 0 ? rohm mcr03 series r45 0 ? rohm mcr03 series r5 0 ? rohm mcr03 series c1 0.01uf murata gmr18 series r6 0 ? rohm mcr03 series c2 - - - r7 0 ? rohm mcr03 series c3 - - - r8 0 ? rohm mcr03 series c4 0.1uf murata gmr18 series r9 - - - c5 0.01uf murata gmr18 series r10 20k ? rohm mcr03 series c6 0.01uf murata gmr18 series r11 - - - c7 0.01uf murata gmr18 series r12 300k ? rohm mcr03 series c8 2200pf murata gmr18 series r13 47k ? rohm mcr03 series c9 1uf murata gmr18 series r14 0 ? rohm mcr03 series c10 - - - r15 560k ? rohm mcr03 series c11 - - - r16 62k ? rohm mcr03 series c12 - - - r17 - - - c13 - - - r18 0 ? rohm mcr03 series c14 0.22uf murata gmr18 series r19 10 ? rohm mcr03 series c15 10uf kyocera cm32x7r106m25a r20 - - - c16 - - - r21 1k ? rohm mcr03 series c17 10uf murata gmr21 series r22 1k ? rohm mcr03 series c18 - - - r23 1m ? rohm mcr03 series c19 - - - r24 3k ? rohm mcr03 series c20 10uf8 kyocera cm21b106m06a r25 1m ? rohm mcr03 series c21 - - - r27 0 ? rohm mcr03 series c22 - - - r28 0 ? rohm mcr03 series c23 330uf panasonic eefsx0d331xe r29 - - - c24 - - - r30 - - - c25 - - - r31 0 ? rohm mcr03 series c-ton - - - r32 0 ? rohm mcr03 series r33 - - - l1 0.7uh tdk vlm10055t-r70m120 r34 0 ? rohm mcr03 series d1 - - - r35 0 ? rohm mcr03 series d2 diode rohm rb521s-30 r36 2 ? rohm pmr100 r37 0 ? rohm mcr03 series tr1a fet nec upa2702 r38 0 ? rohm mcr03 series tr2a fet nec upa2702 r39 0 ? rohm mcr03 series tr3a - - - r40 10 ? rohm mcr03 series tr3b - - - technical note bd9560muv 15/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. evaluation board circuit(applicat ion for ceramic capacitor) r20 c17 vin vron vin vcc vid0 vid4 vid2 vid1 vid3 vcc vcc gnd vcc vref sw6 sw1 sw2 sw3 sw4 sw5 r8 r3 r4 r6 r7 r1 c1 pwrgd vref ton pwrgd_c scp ss dac vcc gnd c4 c2 c5 c6 c7 c8 c9 r14 r11 r15 r16 vcc vin r38 r37 r34 r28 r27 r22 r21 r24 r25 r29 r33 r31 r32 r36 c14 d2 tr2a l1 tr1a tr1b pgnd vcc core vin_ic vin_ic vcc pvcc bts hg sw lg pgnd isp ism fb lsm lsp sgnd s llm sus_out 1 3 4 5 6 7 8 9 10 11 12 13 14 2 21 19 20 22 23 24 25 26 28 29 18 17 27 30 32 31 vref cl c3 r13 16 pvcc vin p_mon 15 p_mon pulse_in vcc_core vref cl 3.3v 3.3v vcc_core r2 r9 r10 r12 r17 r18 c10 sw7 c11 c12 r39 r40 r41 c13 d1 c16 c18 c19 c20 c21 c22 c23 r0 c24 r42 r43 tr3b gnd r19 r45 r44 tr3a r30 vin_ic c15 r23 c25 r35 r26 vin_fet vin_fet c_ton r5 technical note bd9560muv 16/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. evaluation board parts list part no value company part name part no value company part name r0 0 ? rohm mcr03 series r41 - - - r1 1k ? rohm mcr03 series r42 - - - r2 - - - r43 - - - r3 0 ? rohm mcr03 series r44 - - - r4 0 ? rohm mcr03 series r45 0 ? rohm mcr03 series r5 0 ? rohm mcr03 series c1 0.01uf murata gmr18 series r6 0 ? rohm mcr03 series c2 - - - r7 0 ? rohm mcr03 series c3 - - - r8 0 ? rohm mcr03 series c4 0.1uf murata gmr18 series r9 - - - c5 0.01uf murata gmr18 series r10 20k ? rohm mcr03 series c6 0.01uf murata gmr18 series r11 - - - c7 0.01uf murata gmr18 series r12 300k ? rohm mcr03 series c8 2200pf murata gmr18 series r13 47k ? rohm mcr03 series c9 1uf murata gmr18 series r14 0 ? rohm mcr03 series c10 - - - r15 560k ? rohm mcr03 series c11 - - - r16 62k ? rohm mcr03 series c12 - - - r17 - - - c13 - - - r18 0 ? rohm mcr03 series c14 0.47uf murata gmr21 series r19 10 ? rohm mcr03 series c15 10uf kyocera cm32x7r106m25a r20 - - - c16 - - - r21 1k ? rohm mcr03 series c17 10uf murata gmr21 series r22 1k ? rohm mcr03 series c18 - - - r23 1m ? rohm mcr03 series c19 47uf4 kyocera cm32b476m06a r24 3k ? rohm mcr03 series c20 47uf4 kyocera cm32b476m06a r25 1m ? rohm mcr03 series c21 - - - r27 0 ? rohm mcr03 series c22 - - - r28 0 ? rohm mcr03 series c23 - - - r29 - - - c24 - - - r30 - - - c25 - - - r31 0 ? rohm mcr03 series c-ton - - - r32 0 ? rohm mcr03 series r33 - - - l1 0.7uh panasonic etqp2h0r7bfa r34 0 ? rohm mcr03 series d1 - - - r35 0 ? rohm mcr03 series d2 diode rohm rb521s-30 r36 2 ? rohm pmr100 r37 0 ? rohm mcr03 series tr1a fet nec upa2702 r38 0 ? rohm mcr03 series tr2a fet nec upa2702 r39 0 ? rohm mcr03 series tr3a - - - r40 10 ? rohm mcr03 series tr3b - - - technical note bd9560muv 17/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. evaluation board circuit(application for vin uvlo off) r20 c17 vin vron vcc vid0 vid4 vid2 vid1 vid3 vcc vcc gnd vcc vref sw6 sw1 sw2 sw3 sw4 sw5 r8 r3 r4 r6 r7 c1 pwrgd vref ton pwrgd_c scp ss dac vcc gnd c4 c2 c5 c6 c7 c8 c9 r14 r11 r15 r16 vcc vin r38 r37 r34 r28 r27 r22 r21 r24 r25 r29 r33 r31 r32 r36 c14 d2 tr2a l1 tr1a tr1b pgnd vcc core vin_ic vin vcc pvcc bts hg sw lg pgnd isp is m fb lsm lsp sgnd sllm sus_out 1 3 4 5 6 7 8 9 10 11 12 13 14 2 21 19 20 22 23 24 25 26 28 29 18 17 27 30 32 31 vref cl c3 r13 16 pvcc p_mon 15 p_mon pulse_in vcc_core vref cl 3.3v 3.3v vcc_core r2 r9 r10 r12 r17 r18 c10 sw7 c11 c12 r39 r40 r41 c13 d1 c15 c16 c18 c19 c20 c21 c22 c23 r0 c24 r42 r43 tr3b gnd r19 r45 r44 tr3a r30 vcc r23 c25 r35 r26 vin_fet vin_fet c_ton r5 technical note bd9560muv 18/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. evaluation board parts list part no value company part name part no value company part name r0 0 ? rohm mcr03 series r41 - - - r1 1k ? rohm mcr03 series r42 - - - r2 - - - r43 - - - r3 0 ? rohm mcr03 series r44 - - - r4 0 ? rohm mcr03 series r45 0 ? rohm mcr03 series r5 0 ? rohm mcr03 series c1 0.01uf murata gmr18 series r6 0 ? rohm mcr03 series c2 - - - r7 0 ? rohm mcr03 series c3 - - - r8 0 ? rohm mcr03 series c4 0.1uf murata gmr18 series r9 - - - c5 0.01uf murata gmr18 series r10 20k ? rohm mcr03 series c6 0.01uf murata gmr18 series r11 - - - c7 0.01uf murata gmr18 series r12 300k ? rohm mcr03 series c8 2200pf murata gmr18 series r13 47k ? rohm mcr03 series c9 1uf murata gmr18 series r14 0 ? rohm mcr03 series c10 - - - r15 560k ? rohm mcr03 series c11 - - - r16 62k ? rohm mcr03 series c12 - - - r17 - - - c13 - - - r18 0 ? rohm mcr03 series c14 0.22uf murata gmr18 series r19 10 ? rohm mcr03 series c15 10uf kyocera cm32x7r106m25a r20 - - - c16 - - - r21 1k ? rohm mcr03 series c17 10uf murata gmr21 series r22 1k ? rohm mcr03 series c18 - - - r23 1m ? rohm mcr03 series c19 - - - r24 3k ? rohm mcr03 series c20 10uf8 kyocera cm21b106m06a r25 1m ? rohm mcr03 series c21 - - - r27 0 ? rohm mcr03 series c22 - - - r28 0 ? rohm mcr03 series c23 330uf panasonic eefsx0d331xe r29 - - - c24 - - - r30 - - - c25 - - - r31 0 ? rohm mcr03 series c-ton - - - r32 0 ? rohm mcr03 series r33 - - - l1 0.7uh tdk vlm10055t-r70m120 r34 0 ? rohm mcr03 series d1 - - - r35 0 ? rohm mcr03 series d2 diode rohm rb521s-30 r36 2 ? rohm mcr03 series r37 0 ? rohm mcr03 series tr1a fet nec upa2702 r38 0 ? rohm mcr03 series tr2a fet nec upa2702 r39 0 ? rohm mcr03 series tr3a - - - r40 10 ? rohm mcr03 series tr3b - - - technical note bd9560muv 19/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. operation notes and precautions 1. this integrated circuit is a monolithic ic, which (as shown in the figure below), has p isolation in the p substrate and between the various pins. a p-n junction is formed from this p layer and n layer of each pin, with the type of junction depending on the relation between each potential, as follows: ? when gnd element a element b, the p-n junction is a diode. ? when element b gnd element a, the p-n junction oper ates as a parasitic transistor. parasitic diodes inevitably occur in the structure of the ic. the operation of parasitic diodes can result in mutual interferen ce among circuits, as well as operating malfunctions and physical damage. therefore, be careful to avoid methods by which parasitic diodes operate, such as applying a voltage lower than the gnd (p substrate) voltage to an input pin. 2. in some modes of operation, power supply voltage and pin voltage are reversed, giving rise to possible internal circuit damage. for example, when the external capacitor is charged, the electric charge can cause a vcc short circuit to the gnd. in order to avoid these proble ms, inserting a vcc series countercurr ent prevention diode or bypass diode between the various pins and the vcc is recommended. 3. absolute maximum rating although the quality of this ic is ri gorously controlled, the ic may be des troyed when applied voltage or operating temperature exceeds its absolute maximum rating. because s hort mode or open mode cannot be specified when the ic is destroyed, it is important to take physic al safety measures such as fusing if a special mode in excess of absolute rating limits is to be implemented. 4.gnd potential make sure the potential for the gnd pin is always kept lower than the potentials of all other pins, regardless of the operating mode. 5. thermal design in order to build sufficient margin into the thermal desi gn, give proper consideration to the allowable loss (power dissipation) in actual operation. 6. short-circuits between pins and incorrect mounting position when mounting the ic onto the circuit board, be extremely care ful about the orientation and pos ition of the ic. the ic may be destroyed if it is incorrectly positio ned for mounting. do not short-circuit between any output pin and supply pin or ground, or between the output pi ns themselves. accidental attach ment of small objects on thes e pins will cause shorts and may damage the ic. vcc pin countercurrent prevention diode bypass diode gnd (pin a) p+ p+ n n n p p parasitic pin gnd resistance gnd parasitic pin p substrate n p n c (pin b) b e p+ p+ n n transistor (npn) (pin b) c e b gnd parasitic transistor other pins in close proxiity (pin a) parasitic transistor gnd technical note bd9560muv 20/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. 7. operation in strong electromagnetic fields use in strong electromagnetic fields may cause malfuncti ons. use extreme caution wi th electromagnetic fields. 8. thermal shutdown circuit this ic is provided with a built-in thermal shutdown (tsd ) circuit, which is activated when the operating temperature reaches 175 (standard value), and has a hysteresis range of 15 (standard). when the ic chip temperature rises to the threshold, all the inputs automatically turn off. note that the tsd circuit is provided for the exclusive purpose shutting down the ic in the presence of extreme heat, and is not des igned to protect the ic per se or guarantee performance when or after extreme heat conditions occur. therefore, do no t operate the ic with the expe ctation of continued use or subsequent operation once t he tsd is activated. 9. capacitor between output and gnd when a larger capacitor is connected between the output and gnd, vcc or vin shorted with t he gnd or 0v line ? for any reason ? may cause the charged capacitor current to flow to the output, possibly destroying the ic. do not connect a capacitor larger than 1000uf between the output and gnd. 10. precautions for board inspection connecting low-impedance capacitors to run inspections with the board may produce st ress on the ic. therefore, be certain to use proper discharge procedure before each process of the operation. to prevent electrostatic accumulation and discharge in the assembly process, thoroughly ground your self and any equipment that could sustain esd damage, and continue observing esd-prevention procedures in all handling, transfer and storage operation s. before a ttempting to connect components to the test setup, make certain that the power supply is off. likewise, be sure the power supply is off before removing any component connected to the test setup. 11. gnd wiring pattern when both a small-signal gnd and high cu rrent gnd are present, single-point grou nding (at the set standard point) is recommended, in order to separate the small-signal an d high current patterns, and to be sure the voltage change stemming from the wiring resistance and high current does not cause any voltage change in the small-signal gnd. in the same way, care must be taken to avoid wiring pattern fluctuations in any connected external component gnd. power dissipation ambient temperature [ta] power dissi p ation [ pd ] 150 125 100 75 50 25 0 200 400 600 800 1000 [ ] [mw] 880mw 380mw 70mm 70mm 1.6mm glass-epoxy pcb ja=142.0 /w with no heat sink j-a=328.9 /w technical note bd9560muv 21/21 www.rohm.com 2010.04 - rev.c ? 2010 rohm co., ltd. all rights reserved. ordering part number b d 9 5 6 0 m u v - e 2 part no. part no. package muv : vqfn032v5050 packaging and forming specification e2: embossed tape and reel (unit : mm) vqfn032v5050 0.08 s s 1.0max (0.22) 0.02 +0.03 - 0.02 24 8 1 9 32 16 25 17 0.5 0.75 0.4 0.1 3.4 0.1 3.4 0.1 0.25 +0.05 - 0.04 c0.2 5.0 0.1 5.0 0.1 1pin mark ? order quantity needs to be multiple of the minimum quantity. r1010 a www.rohm.com ? 2010 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specied in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specied herein is intended only to show the typical functions of and examples of application circuits for the products. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospac e machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. |
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