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1/21 www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. high performance class-d speaker / headphone amplifier series 2.3w+2.3w class-d speaker amplifier for differential analog input BD5471MUV description BD5471MUV is a low voltage drive class-d stereo speaker ampl ifier that was developed for note-book pc, cellular phone, mobile audio products and the others. lc filters of speaker outputs are unnecessary, and only 7 external components are needed for speaker system. also, 3.3v regulator in BD5471MUV can use power supply for audio-codec. BD5471MUV, that is high-efficiency, low consumptio n, is suitable for application by using battery. shutdown current is 0a typically. also, start-up time is fast from shutdown to active mode. BD5471MUV can use for some applications that chan ge mode between ?shutdown state? and ?active state?. features 1) high power 2.3w typ. (vdd=5v, rl=4 ? , thd+n=10%, stereo input) high power 1.5w typ. (vdd=5v, rl=8 ? , thd+n=10%, stereo input) 2) gain selectable by the external control (6, 12, 18, 24db) 3) pop noise suppression circuitry 4) standby function (mute function) [i sd =0ua] 5) protection circuitry (short protection [audio , reg], thermal shutdown, under voltage lockout) 6) built-in 3.3v regulator 7) built-in beep detect circuitry 8) very small package vqfn024v4040 applications notebook computers mobile electronic applications mobile phones pda etc. absolute maxi mum ratings ta=+25 *1 74.2mm 74.2mm 1.6mm, fr4 1-layer glass epoxy board(copper on top layer 0%) derating in done at 5.6mw/ for operating above ta=25 . there are thermal via on the board *2 74.2mm 74.2mm 1.6mm, fr4 4-layer glass epoxy board (copper on bottom 2 and 3 layer 100%) *3 input terminal (inl+, inl-, inr+, inr-) *4 control terminal (mute, g0, g1, eapd, beep, reg_sd) operating conditions item symbol range unit power supply voltage vdd +4.5 +5.5 v temperature range topr -40 +85 * these products aren?t designed for pr otection against radioactive rays. item symbol rating unit power supply voltage vdd 7.0 v power dissipation pd 0.7 *1 w 2.2 *2 w storage temperature range tstg -55 +150 input voltage range *3 vin -0.3 vdd+0.3 v control terminal input voltage range *4 vctl -0.3 vdd+0.3 v no.09075eat10
technical note 2/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. D active mode, mute=h, eapd=h, no load D standby mode, mute=h,eapd=l D D D D D D D 325 1.46 D D D D
technical note 3/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. g0 g0 150k g1 beep det inr 24 19 20 21 22 23 inl- inr avdd agnd inl+ c6 7 8 9 10 11 12 reg_out mute eapd reg_sd reg_vdd reg_gnd c2 2.2f c3 short short eapd 3.3vreg pwm gain select h- bridge beep pwm gain select h- bridge stop uvlo tsd short bias osc beep mute eapd uvlo tsd mute 150k g1 g1 g0 1 2 3 4 5 6 beep det_c outl+ pvddl outl- pgndl c11 c1 0.01uf vdd 13 14 15 16 17 18 pvddr outr- pgndr outr+ g1 g0 c8 0.1f c7 0.1f c9 10uf c5 0.1f c4 0.1f 1f 8 vdd vdd 150k 150k +b 150k short short short short uvlo tsd v v v 22f 1f 22f a a v se v se v btl v beep v mute a v eapd a v reg_sd vin vin vin vin a v g0 a v g1 8 v btl v v v 1f 1f 22f 22f v se v se
technical note 4/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. mute inr- inr+ outl+ bias agnd avdd pvddl 150k inl- inl+ pwm h- bridge gain select reg_vdd beep eapd reg_sd reg reg_out reg_gnd pgndr pvddr g0 g1 control logic 150k 150k 150k det_c 4 pgndl 3.3v short protection tsd uvlo 24 23 10 15 21 3 6 outl- pwm h- bridge gain select 19 20 error g0 g1 g0 g1 18 g0 g1 7 8 short error osc beep detect 150k 9 1 2 17 outr+ outr- 16 13 11 150k short protection 12 22 5 14 error beep det_c outl+ pvddl pgndl outl- g0 g1 outr+ pvddr pgndr outr- inl+ inl- agnd avdd inr- inr+ mute eapd reg sd reg vdd reg out reg gnd 1 2 3 4 5 6 18 17 16 15 14 13 7 8 9 10 11 12 24 23 22 21 20 19
technical note 5/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. 0.1f 0.1f differential input audio inputl+ audio inputl- c2 c1 g0 g1 gain control beep 2.2f eapd mute c7 hactive lshutdown reg_sd 0.01f c8 mute inr- inr+ outl+ bias agnd avdd pvddl 150k inl- inl+ pwm h- bridge gain select reg_vdd beep eapd reg_sd reg reg_out reg_gnd pgndr pvddr g0 g1 control logic 150k 150k 150k det_c 4 pgndl 3.3v short protection tsd uvlo 24 23 10 15 21 3 6 outl- pwm h- bridge gain select 19 20 error g0 g1 g0 g1 18 g0 g1 7 8 short error osc beep detect 150k 9 1 2 17 outr+ outr- 16 13 11 150k short protection 12 22 5 14 error 0.1f 0.1f differential input audio inputr+ audio inputr- c4 c3 c5 10f short 0.1f single-ended input audio input l c2 g0 g1 gain control beep 2.2f eapd mute c7 hactive lshutdown reg_ sd 0.01f c8 mute inr- inr+ outl+ bias agnd avdd pvddl 150k inl- inl+ pwm h- bridge gain sele ct reg_vdd beep eapd reg_sd reg reg_out reg_gnd pgndr pvddr g0 g1 control logic 150k 150k 150k det_c 4 pgndl 3.3v sh ort protection tsd uvlo 24 23 10 15 21 3 6 outl- pwm h- bridge gain sele ct 19 20 error g0 g1 g0 g1 18 g0 g1 7 8 short error osc beep detect 150k 9 1 2 17 outr+ outr- 16 13 11 150k short protection 12 22 5 14 error 0.1f audio input r c4 c5 10f single-ended input c1 c3 0.1f 0.1f short
technical note 6/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. D D input signal line. please connect to gnd line. please connect to speaker . please connect to power supply (vdd=+2.5
technical note 7/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. it output capacitor of 3.3v regulator. use capacitance equal to or more than 1uf. it makes an input coupling capacitor 0.1uf. input impedance ri in each gain setting becomes the above table. in 18db gain setting, it is ri=36k [hz] ciri2 1 fc ?? ? [ms] 5u vdd c1 toff 8.0 ? ?
technical note 8/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved.
technical note 9/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. 0.1f 0.1f differential input audio inputl+ audio inpult- c2 c1 g0 g1 gain control beep 2.2f eapd mute c7 hactive lshutdown reg_sd 0.01f c8 mute inr- inr+ outl+ bias agnd avdd pvddl 150k inl- inl+ pwm h- bridge gain select reg_vdd beep eapd reg_sd reg reg_out reg_gnd pgndr pvddr g0 g1 control logic 150k 150k 150k det_c 4 pgndl 3.3v short protection tsd uvlo 24 23 10 15 21 3 6 outl- pwm h- bridge gain select 19 20 error g0 g1 g0 g1 18 g0 g1 7 8 short error osc beep detect 150k 9 1 2 17 outr+ outr- 11 150k short protection 12 22 5 14 error 0.1f 0.1f differential input audio inputr+ audio inputr- c4 c3 c5 10f short 1f 1f 22f 22f r l btl audio precision etc. rl=speaker load measurement instrument 1f 1f 22f 22f r l btl rl=speaker load measurement instrument 13 16 audio precision etc. [hz] lc 1 fc 2 ?
technical note 10/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. beep detection function mute=h, beep signal input mute=h, beep signal stop toff ton
technical note 11/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved.
technical note 12/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. ton=1msec eapd 5v/div
technical note 13/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. vqfn024v4040 2.5 2.0 1.0 0.5 0.0 0 25 50 75 100 125 150 ambient temperature ta
technical note 14/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved.
technical note 15/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. iccreg - vdd no load, no signal 0 0.05 0.1 0.15 0.2 0.25 0.3 0123456 vdd [v] iccreg [ma] iccsd - vdd 0 0.1 0.2 0.3 0.4 0.5 0123456 vdd [v] isd [ua] efficiency - output power f=1khz rl=8+33uh lc-filter(22uh+1uf) 0 10 20 30 40 50 60 70 80 90 100 0 0.10.20.30.40.50.60.70.80.9 1 1.11.2 po [w] efficiency [%] vdd=2.5v vdd=3.6v vdd=5.0v icc vs output power f=1khz rl=8+33uh lc-filter(22uh+1uf) 0 50 100 150 200 250 300 350 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 po [w] icc [ma] vdd=2.5v vdd=3.6v vdd=5.0v efficiency vs output power f=1khz rl=4+33uh lc-filter(22uh+1uf) 0 10 20 30 40 50 60 70 80 90 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 po [w] efficiency [%] vdd=2.5v vdd=3.6v vdd=5.0v icc vs output power f=1khz rl=4+33uh lc-filter(22uh+1uf) 0 100 200 300 400 500 600 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 po [w] icc [ma] vdd=2.5v vdd=3.6v vdd=5.0v icc - vdd no load, no signal 0 1 2 3 4 5 6 0123456 vdd [v] icc [ma] iccstby - vdd no load, no signal 0 0.05 0.1 0.15 0.2 0.25 0.3 0123456 vdd [v] iccstby [ma]
technical note 16/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. fig.9 fig.10 fig.11 fig.12 fig.13 fig.14 fig.15 fig.16 output power vs vdd f=1khz lc-filter(22uh+1uf) 400hz-30khz 0.0 0.5 1.0 1.5 2.0 2.5 3.0 4.5 4.7 4.9 5.1 5.3 5.5 vdd [v] po [w] rl=8?thd+n=1% rl=8?thd+n=10% output power vs rl thd+n=10% f=1khz lc-filter(22uh+1uf) 400hz-30khz 0.0 0.5 1.0 1.5 2.0 2.5 3.0 4 8 12 16 20 24 28 32 rl[] po[w] vdd=2.5v vdd=3.6v vdd=5.0v output power vs rl thd+n=1% f=1khz lc-filter(22uh+1uf) 400hz-30khz 0.0 0.5 1.0 1.5 2.0 2.5 4 8 12 16 20 24 28 32 rl[] po[w] vdd=2.5v vdd=3.6v vdd=5.0v thd+n vs output power rl=4 f=1khz lc-filter(22uh+1uf) 400hz-30khz 0.1 1 10 0.01 0.1 1 10 po [w] thd+n [%] vdd=4.5v vdd=5.0v vdd=5.5v thd+n vs output power rl=8 f=1khz lc-filter(22uh+1uf) 400hz-30khz 0.1 1 10 0.01 0.1 1 10 po [w] thd+n [%] vdd=4.5v vdd=5.0v vdd=5.5v thd+n vs frequency vdd=5.5v rl=8 lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] po=50mw po=250mw po=1w thd+n vs frequency vdd=5.5v rl=4 lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] po=50mw po=250mw po=1w output power vs vdd f=1khz lc-filter(22uh+1uf) 400hz-30khz 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 4.7 4.9 5.1 5.3 5.5 vdd [v] po [w] rl=4?thd+n=1% rl=4?thd+n=10%
technical note 17/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. thd+n vs frequency vdd=5.0v rl=8 lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] po=50mw po=250mw po=1w thd+n vs frequency vdd=4.5v rl=8 lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] po=50mw po=250mw po=500mw thd+n_vs_common mode input voltage f=1khz rl=8 po=100mw lc-filter(22uh+1uf) 400hz-30khz 0.0 0.5 1.0 1.5 2.0 01234567 vic - common mode input voltage [v] thd+n [%] vdd=4.5v vdd=5.0v vdd=5.5v thd+n vs frequency rl=4 po=250mw lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] vdd=4.5v vdd=5.0v vdd=5.5v thd+n vs frequency vdd=5.0v rl=4 lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] po=50mw po=250mw po=1w thd+n vs frequency vdd=4.5v rl=4 lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] po=50mw po=250mw po=500mw thd+n vs frequency rl=8 po=125mw lc-filter(22uh+1uf) 30khz-lpf 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] vdd=4.5v vdd=5.0v vdd=5.5v thd+n_vs_common mode input voltage f=1khz rl=4 po=200mw lc-filter(22uh+1uf) 400hz-30khz 0.0 0.5 1.0 1.5 2.0 01234567 vic - common mode input voltage [v] thd+n [%] vdd=4.5v vdd=5.0v vdd=5.5v
technical note 18/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. psrr rl=4 vripple=0.1vpp inputs ac-grounded cin=1uf lc-filter(22uh+1uf) 30khz-lpf -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k f [hz] psrr [db] vdd=4.5v vdd=5.0v vdd=5.5v psrr rl=8 vripple=0.1vpp inputs ac-grounded cin=1uf lc-filter(22uh+1uf) 30khz-lpf -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k f [hz] psrr [db] vdd=4.5v vdd=5.0v vdd=5.5v psrr rl=8 vripple=0.1vpp inputs floating lc-filter(22uh+1uf) 30khz-lpf -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k f [hz] psrr [db] vdd=4.5v vdd=5.0v vdd=5.5v cmrr rl=8 vin=1vpp cin=1uf lc-filter(22uh+1uf) 30khz-lpf -70 -65 -60 -55 -50 -45 -40 10 100 1k 10k 100k freq [hz] cmrr [db] vdd=4.5v vdd=5.0v vdd=5.5v psrr rl=4 vripple=0.1vpp inputs floating lc-filter(22uh+1uf) 30khz-lpf -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k f [hz] psrr [db] vdd=4.5v vdd=5.0v vdd=5.5v gain_vs_frequency rl=4 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 0 2 4 6 8 10 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v gain vs frequency rl=8 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 0 2 4 6 8 10 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v cmrr rl=4 vin=1vpp cin=1uf lc-filter(22uh+1uf) 30khz-lpf -70 -65 -60 -55 -50 -45 -40 10 100 1k 10k 100k freq [hz] cmrr [db] vdd=4.5v vdd=5.0v vdd=5.5v
technical note 19/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. gain_vs_frequency rl=4 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 10 12 14 16 18 20 22 24 26 28 30 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v gain_vs_frequency rl=4 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 10 12 14 16 18 20 22 24 26 28 30 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v gain_vs_frequency rl=4 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 6 8 10 12 14 16 18 20 22 24 26 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v gain_vs_frequency rl=4 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 6 8 10 12 14 16 18 20 22 24 26 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v gain_vs_frequency rl=4 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 6 8 10 12 14 16 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v gain_vs_frequency rl=4 vin=0.5vpp lc-filter(22uh+1uf) 30khz-lpf 6 8 10 12 14 16 10 100 1k 10k 100k freq [hz] gain [db] vdd=4.5v vdd=5.0v vdd=5.5v
technical note 20/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. notes for use (1) absolute maximum ratings this ic may be damaged if the absolute maximum ratings for the applied voltage, temperature range, or other parameters are exceeded. therefore, avoid usin g a voltage or temperature that ex ceeds the absolute maximum ratings. if it is possible that absolute maximum ratings will be exceeded, use fuses or other physical safety measures and determine ways to avoid exceeding the ic's absolute maximum ratings. (2) gnd terminal?s potential try to set the minimum voltage for gnd terminal?s potential, regardless of the operation mode. (3) shorting between pins and mounting errors when mounting the ic chip on a board, be very careful to set the chip's orientation and position precisely. when the power is turned on, the ic may be damaged if it is not mounted correctly. the ic may also be damaged if a short occurs (due to a foreign object, etc.) between two pins, between a pin and the power supply, or between a pin and the gnd. (4) operation in strong magnetic fields note with caution that operation faults may occur when this ic operates in a strong magnetic field. (5) thermal design ensure sufficient margins to the thermal design by taking in to account the allowable powe r dissipation during actual use modes, because this ic is power amp. when excessive signal inpu ts which the heat dissipation is in sufficient condition, it is possible that thermal shutdown circuit is active. (6) thermal shutdown circuit this product is provided with a built-in thermal shutdown circuit. when the thermal shutdown circuit operates, the output transistors are placed under open status. the thermal shutdown circuit is primarily intended to shut down the ic avoiding thermal runaway under abnormal conditions with a chip temperature exceeding tjmax = +150
technical note 21/21 BD5471MUV www.rohm.com 2009.07 - rev.a ? 2009 rohm co., ltd. all rights reserved. ordering part number b d 5 4 7 1 m u v - e 2 part no. part no. 5471 package muv (unit : mm) vqfn024v4040 0.08 s s 16 7 12 19 24 13 18 0.40.1 0.02 +0.03 - 0.02 1pin mark 2.40.1 c0.2 0.5 4.00.1 0.75 2.40.1 4.00.1 1.0max (0.22) 0.25 +0.05 - 0.04 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 () direction of feed reel 1pin
r0039 a www.rohm.com ? 2009 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 specified herein is subject to change for improvement without notice. the content specified 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 specifications, 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 specified 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 specified 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 specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified 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, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire 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, aerospace 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 specified 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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