High Performance Class-D Speaker / Headphone Amplifier Series 2.3W+2.3W Class-D Speaker Amplifier for Differential Analog input No.09075EAT10 BD5471MUV ●Description BD5471MUV is a low voltage drive class-D stereo speaker amplifier 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 consumption, is suitable for application by using battery. Shutdown current is 0µA typically. Also, start-up time is fast from shutdown to active mode. BD5471MUV can use for some applications that change mode between “shutdown state” and “active state”. ●Features 1) High power 2.3W typ. (VDD=5V, RL=4Ω, THD+N=10%, stereo input) High power 1.5W typ. (VDD=5V, RL=8Ω, 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) [ISD=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 Maximum Ratings（Ta=+25℃） Item Power Supply Voltage Power Dissipation Pd Storage Temperature Range Input Voltage Range *3 Tstg Vin Rating 7.0 0.7 *1 2.2 *2 -55 ～ +150 -0.3～VDD+0.3 Vctl -0.3～VDD+0.3 Control Terminal Input Voltage Range *4 *1 Symbol VDD Unit V W W ℃ V V 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 Power Supply Voltage Temperature Range Symbol VDD Topr Range +4.5 ～ +5.5 -40 ～ +85 Unit V ℃ * These products aren’t designed for protection against radioactive rays. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 1/21 2009.07 - Rev.A Technical Note BD5471MUV ●Electric Characteristics（Unless otherwise specified, Ta＝+25℃, VDD=+5.0V, RL=8Ω, AC item= LC Filter(L=22µH, C=1µF) ) Item Symbol MIN. Limit TYP. MAX. Unit Circuit current (Active) ICC ― 5.5 12.0 mA Circuit current (Standby) ISTBY ― 0.1 1.0 mA Circuit current (Regulator) ICCR ― 0.15 1.0 mA Circuit current (Shutdown) <Speaker Amplifier> ISD ― 0.1 2.0 µA Output power 1 PO1 0.8 1.2 ― W Output power 2 PO2 1.0 1.5 ― W 5.5 11.5 17.5 23.5 ― 60 70 175 0.78 63 42 25 14 6.0 12 18 24 0.2 70 90 250 1.02 90 60 36 20 6.5 12.5 18.5 24.5 1.0 ― ― 325 1.46 117 78 47 26 dB dB dB dB % dB dB kHz msec kΩ kΩ kΩ kΩ 3.30 200 0.2 3.45 ― 1 V mA mV/mA ― ― 33 VDD 0.4 44 V V µA Voltage gain GV Total harmonic distortion Crosstalk S/N Switching Frequency Start-up time THD+N CT SNR fosc Ton Input resistance RIN <Regulator> Output voltage Vo 3.15 Maximum output current Iom 150 Load regulation LREG ― <Control terminal (MUTE, G0, G1, EAPD, BEEP, REG_SD) > High-level VCTLH 1.4 Control terminal input voltage Low-level VCTLL 0 Control terminal input current ICTL 22 Conditions Active mode, MUTE=H, EAPD=H, No load Standby mode, MUTE=H,EAPD=L Regulator Mode, MUTE=EAPD=L REG_SD=H Shutdown mode, MUTE=L, REG_SD=L BTL, f=1kHz, THD+N=1%, Stereo input, *1, *2 BTL, f=1kHz, THD+N=10%, Stereo input, *1, *2 BTL, G0=G1=GND BTL, G0=GND, G1=VDD BTL, G0=VDD, G1=GND BTL, G0=G1=VDD BTL, Po=0.7*PO1 *1, *2 BTL, f=1kHz *1, *3 BTL, Po=PO1 *1, *3 G0=G1=GND G0=GND, G1=VDD G0=VDD, G1=GND G0=G1=VDD Io=150mA Vo=3.15V Io=0→150mA Control terminal Input voltage VCTL=5V *1: B.W.＝400～30kHz， BTL：The voltage between 3pin and 6pin, 13pin and 16pin ●Active / Standby Control Mode Pin level MUTE EAPD BEEP H/L H/L H/L IC active/ shutdown IC active/standby IC active/standby REG_SD H/L REG active/shutdown www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. Conditions 2/21 2009.07 - Rev.A Technical Note BD5471MUV ●Measurement Circuit Diagram Vin Vin Vin C8 0.1μF INL+ C7 0.1μF 23 24 C5 0.1μF INR－ C6 AGND INL- 22 Vin VDD 10uF AVDD C9 +B 20 21 C4 0.1μF INR＋ 19 BEEP VBEEP 1 A VG0 G0 G0 150k 150k BEEP DET DET_C 18 A VG1 G1 2 Gain Select C1 0.01uF G0 G1 G1 Gain Select G0 G1 150k 17 A BEEP 22μF OUTL+ OUTR+ VSE V SHORT 1μF VDD SHORT SHORT UVLO TSD SHORT HBridge PWM HBridge PWM STOP PVDDL V BEEP MUTE EAPD C11 8Ω 1μF V VSE PVDDR 15 4 VBTL 22μF 16 3 PGNDL OSC BIAS UVLO UVLO TSD TSD 8Ω V VBTL PGNDR 14 5 SHORT 22μF OUTL- SHORT SHORT VSE V 1μF OUTR- 22μF 13 6 MUTE 150k 7 MUTE A EAPD 8 EAPD A VMUTE 9 REG_SD 10 REG_VDD 11 REG_OUT C3 12 REG_GND 2.2μF A VEAPD 1μF 3.3VREG 150k C2 VREG_SD VDD ●Package Outlines TOP VIEW BOTTOM VIEW D5471 (unit : mm) VQFN024V4040 (Plastic Mold) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 3/21 2009.07 - Rev.A V VSE Technical Note BD5471MUV ●Block Diagram ●Pin Assignment <top view> Gain Select PWM HBridge INL23 OUTL+ 3 6 OUTL- 24 23 22 21 20 19 INR+ INL+ 24 INR- AVDD 21 AVDD PVDDR 15 AGND 10 INL- REG_VDD 4 INL+ PVDDL ERROR G0 G1 1 BEEP G0 18 OUTR+ 16 2 DET_C G1 17 13 3 OUTL+ OUTR+ 16 4 PVDDL PVDDR 15 5 PGNDL PGNDR 14 6 OUTL- OUTR- 13 Short Protection INR+ 19 Gain Select PWM INR20 HBridge OUTRERROR G0 G0 18 G1 G0 Short 150k G1 17 G1 REG SD REG VDD REG OUT REG GND Bias EAPD 150k DET_C 2 ERROR UVLO 150k EAPD 8 BEEP 1 Control Logic MUTE MUTE 7 TSD 7 8 9 10 11 12 OSC 150k BEEP Detect 150k Short Protection REG_SD 9 REG REG_OUT 3.3V 11 150k 12 REG_GND ●Pin Assignment Table PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 5 PGNDL 14 PGNDR 22 AGND PIN 名 BEEP DET_C OUTL+ PVDDL PGNDL OUTLMUTE EAPD REG_SD REG_VDD REG_OUT REG_GND OUTRPGNDR PVDDR OUTR+ G1 G0 INR+ INRAVDD AGND INLINL+ www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 4/21 2009.07 - Rev.A Technical Note BD5471MUV ●Application Circuit Example C5 10μF PVDDL Audio InputL+ Audio InputL- 10 AVDD 21 INL+ 24 Gain Select C2 Differential Input PVDDR 15 REG_VDD 4 0.1μF 0.1μF HBridge PWM INL23 G0 0.1μF Audio InputR- G1 Short Protection Short INR+ 19 Gain Select C4 Differential Input HBridge PWM INR20 0.1μF OUTR+ 16 13 OUTR- ERROR C3 G0 G0 18 G0 Gain Control 6 OUTL- ERROR C1 Audio InputR+ OUTL+ 3 G1 G0 Short 150k G1 G1 17 MUTE MUTE 7 EAPD EAPD 8 Control Logic TSD G1 ERROR UVLO 150k 150k BEEP 1 BEEP DET_C 2 0.01μF H：Active Bias OSC 150k BEEP Detect 150k C8 Short Protection REG_SD 9 REG_SD L：Shutdown REG_OUT 3.3V REG 11 150k C7 14 5 12 PGNDL REG_GND 2.2μF 22 PGNDR AGND Differential input C5 10μF PVDDL Audio Input L Single-Ended Input REG_VDD 4 0.1μF AVDD 21 PVDDR 15 10 INL+ 24 Gain Select C2 HBridge PWM INL23 C1 Audio Input R Single-Ended Input G0 G1 Short Protection Short INR+ 19 C4 Gain Select HBridge PWM INR20 C3 Gain Control OUTR+ 16 13 OUTR- ERROR 0.1μF G0 G0 18 G0 6 OUTL- ERROR 0.1μF 0.1μF OUTL+ 3 G1 G0 Short G1 UVLO 150k G1 G1 17 MUTE MUTE 7 EAPD EAPD 8 TSD Control Logic ERROR 150k 150k BEEP 1 BEEP DET_C 2 0.01μF H：Active REG_SD L：Shutdown Bias OSC 150k BEEP Detect 150k C8 Short Protection REG_SD 9 REG_OUT 3.3V REG 11 150k C7 12 REG_GND 5 PGNDL 14 PGNDR 2.2μF 22 AGND Single-Ended input www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 5/21 2009.07 - Rev.A Technical Note BD5471MUV ●Evaluation board Circuit Diagram Audio Input Audio Input C5 C7 C6 C4 C3 C8 24 INL+ 23 22 INL- 21 AGND AVDD 20 19 INR- INR+ BEEP JP1 1 G0 G0 150k 150k BEEP DET DET_C C1 18 G1 2 Gain Select G0 G1 G1 Gain Select G0 G1 150k 17 JP4 JP5 BEEP OUTL+ OUTR+ 16 3 SHORT SHORT UVLO TSD SHORT HBridge SHORT PWM STOP HBridge PWM PVDDL PVDDR 15 4 to Speaker (BTL) BEEP MUTE EAPD PGNDL OSC BIAS UVLO UVLO TSD TSD to Speaker (BTL) PGNDR 14 5 SHORT OUTL- SHORT SHORT OUTR- 13 6 EAPD MUTE 150k 7 3.3VREG 150k MUTE 8 EAPD 9 REG_SD 10 REG_VDD 11 REG_OUT 12 REG_GND C2 3.3V Regulator JP2 JP3 JP4 Please connect to Input Signal line. Please connect to Power Supply (VDD=+2.5～5.5V) line. Please connect to Speaker. Please connect to GND line. ●Evaluation board Parts List Manufacturer/ Part Number Murata GRM188R71C103KA01D Murata GRM188R61C225KE15D Murata GRM188R71C104KA01D ROHM TCFGA1A106M8R Qty. Item Description SMD Size 1 C1 Capacitor, 0.01μF 1608 1 C2 Capacitor, 2.2μF 1608 2 C3, C4,C6,C7 Capacitor, 0.1μF 1608 1 C5, C8 Capacitor, 10μF A (3216) 1 U1 IC, BD5471MUV, Stereo Class-D audio amplifier 4.0mm X 4.0mm VQFN Package ROHM BD5471MUV 1 PCB1 Printed-circuit board, BD5471MUV EVM ― ― www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 6/21 2009.07 - Rev.A Technical Note BD5471MUV ●The relation in the gain setting and input impedance Ri The gain setting terminal (G0,G1) G0 G1 Gain[dB] Ri [Ohm] L L 6 90k L H 12 60k H L 18 36k H H 24 20k ●Description of External parts ① Power down timing capacitor (C1) It’s the capacitor which adjusts time from BEEP signal stop to amplifier stop. Turn off time Toff is set the following fomula. Toff C1 0.8VDD [ms] 5u ② Regulator output capacitor(C2) Output capacitor of 3.3V regulator. Use capacitance equal to or more than 1uF. ③ Input coupling capacitor Ci (C3,C4, C6,C7) 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=36kΩ(Typ.). It sets cutoff frequency fc by the following formula by input coupling capacitor Ci (C3,C4, C6,C7) and input impedance Ri fc 1 [Hz] 2π Ri Ci In case of Ri=36kΩ, Ci=0.1uF, it becomes fc=about 44Hz. ④ The power decoupling capacitor (C5,C8) It makes a power decoupling capacitor 10uF. When making capacitance of the power decoupling capacitor small, there is an influence in the Audio characteristic. When making small, careful for the Audio characteristic at the actual application. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 7/21 2009.07 - Rev.A Technical Note BD5471MUV ●Evaluation board PCB layer Top Layer Bottom Layer www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 8/21 2009.07 - Rev.A Technical Note BD5471MUV ●The way of evaluating Audio characteristics Evaluation Circuit Diagram C5 10μF PVDDL Audio InputL+ Audio InpuLt- 10 Gain Select 0.1μF PWM ERROR 0.1μF Audio InputR- PWM G0 Gain Control Audio 1μF 13 22μF OUTR- Precision 1μF etc. RL=Speaker Load G0 Short G1 UVLO 150k G1 etc. RL BTL G1 TSD G1 17 Precision Measurement Instrument HBridge ERROR C3 G0 6 22μF OUTL- OUTR+ 22μF 16 INR20 G0 18 RL BTL Short Protection Short Gain Select 0.1μF Audio 1μF 1μF RL=Speaker Load G1 INR+ 19 C4 Differential Input HBridge INL23 G0 Measurement Instrument OUTL+ 22μF 3 C1 Audio InputR+ AVDD 21 INL+ 24 C2 Differential Input PVDDR 15 REG_VDD 4 0.1μF Control Logic ERROR 150k MUTE MUTE 7 EAPD EAPD 8 150k BEEP 1 BEEP DET_C 2 0.01μF H：Active REG_SD Bias OSC 150k BEEP Detect 150k C8 Short Protection REG_SD 9 L：Shutdown REG_OUT 3.3V REG 11 150k C7 5 12 REG_GND PGNDL 14 PGNDR 2.2μF 22 AGND When measuring Audio characteristics, insert LC filter during the output terminal of IC and the speaker load and measure it. it. Arrange LC filter as close as possible to the output terminal of IC. In case of L=22μH, C=1μF, the cutoff frequency becomes the following. fc 1 2π LC [Hz] =33.9[kHz] Use a big current type - Inductor L. （Reference） TDK ： SLF12575T-220M4R0 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 9/21 2009.07 - Rev.A Technical Note BD5471MUV ●BEEP Detection Function This IC has BEEP detection. When inputting beep signal to 1pin BEEP terminal at standby mode, amplifier becomes standby to active. When beep signal stops, amplifier becomes active to standby. It is adjustable the time(Toff) from beep signal stop to amplifier standby by a capacitance connect to 2pin DET_C terminal. If no need to use BEEP detection, make 1pin BEEP terminal open or connect to GND. MUTE BEEP VDD 0.2×VDD DET_C Active Active Amplifier state Standby Toff Toff calculation fomula Toff= C×0.8VDD 5u [msec] Example C=0.01u, VDD=5V → Toff=8msec C：Condenser to connect to a 2pin MUTE=H, BEEP signal input MUTE=H, BEEP signal stop DET_C 2V/div OUTL+ 5V/div BEEP 5V/div Toff Ton www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 10/21 2009.07 - Rev.A Technical Note BD5471MUV ●Cntrol Terminal and output Audio Signal Beep Signal Audio Signal Beep Signal Audio Signal Audio IN [ Input ] In case of EAPD=L, it doesn’t output. EAPD [ Input ] Beep Signal f=300～1760Hz Equal to or more than 0.125sec. BEEP [ Input ] It detects that BEEP was inputted. 3.3msec 570usec It makes an amplifier state to standby mode if BEEP isn’t inputted equal to or more than 3.3msec. MUTE [ Input ] Active Active Amplifier state Standby Standby Standby Shutdown Amplifier is a standby. The current comsumption The current consumption reduces. in the audio part is zero. Speaker output Input Output MUTE EAPD BEEP Audio IN Amplifier state Speaker output L L L L L L L L L L H H No signal signal No signal signal L(Shutdown) L(Shutdown) L(Shutdown) L(Shutdown) Hiz Hiz Hiz Hiz L L L L H H H H H H H H H H H H L L L L H H H H L L H H L L H H L L H H No signal signal No signal signal No signal signal No signal signal No signal signal No signal signal L(Shutdown) L(Shutdown) L(Shutdown) L(Shutdown) L(Standby) L(Standby) H(Active) H(Active) H(Active) H(Active) H(Active) H(Active) Hiz Hiz Hiz Hiz Hiz Hiz No signal signal No signal signal No signal signal www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 11/21 2009.07 - Rev.A Technical Note BD5471MUV ●About output starting and stop This IC has the cuircuit of pop noise reduction at starting and stop. Pop noise reduction is realized in controlling to adjust the timing of output at starting and stop. Turn on time is 1msec. Output starting (MUTE=H, EAPD=L→H) Output stop (MUTE=H, EAPD=H→L) EAPD 5V/div OUTL+ 5V/div OUTL5V/div Ton=1msec ●About the short protection OUTL+ H－ Bridge OUTL－ When detecting a short of Lch output, Lch output stops, and Rch output stops. Also when detecting a short of Rch output, Rch output stops, and Lch output stops. Short Protection Short Protection H－ Bridge www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. OUTR+ OUTR－ 12/21 2009.07 - Rev.A Technical Note BD5471MUV ●About the thermal design by the IC Characteristics of an IC have a great deal to do with the temperature at which it is used, and exceeding absolute maximum ratings may degrade and destroy elements. Careful consideration must be given to the heat of the IC from the two standpoints of immediate damage and long-term reliability of operation. Pay attention to points such as the following. Since an maximum junction temperature (TjMAX.)or operating temperature range (Topr) is shown in the absolute maximum ratings of the IC, to reference the value, find it using the Pd-Ta characteristic (temperature derating curve). If an input signal is too great when there is insufficient radiation, TSD (thermal shutdown) may operate. TSD, which operates at a chip temperature of approximately +180℃, is canceled when this goes below approximately +100℃. Since TSD operates persistently with the purpose of preventing chip damage, be aware that long-term use in the vicinity that TSD affects decrease IC reliability. Temperature Derating Curve Reference Data VQFN024V4040 3.5 ③3.1W Power dissipation Pd（W） 3.1 measurement conditions ： IC unit Rohm standard board mounted board size ： 74.2mm×74.2mm×1.6mmt board① FR4 1-layer glass epoxy board(Copper on top layer 0%) board② FR4 4-layer glass epoxy board(Copper on 2,3 layer 100%) board size ： 35mm×25mm×1.6mmt board③ FR4 4-layer glass epoxy board(Copper on 2,3 layer 100%) connecting with thermal via 2.5 ②2.2W 2.2 2.0 1.5 1.0 ①0.7W 0.7 0.5 0.0 0 25 50 75 85 100 125 150 Ambient temperature Ta（℃） Note) Values are actual measurements and are not guaranteed. Power dissipation values vary according to the board on which the IC is mounted. The Power dissipation of this IC when mounted on a multilayer board designed to radiate is greater than the values in the graph above. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 13/21 2009.07 - Rev.A Technical Note BD5471MUV ●TYPICAL CHARACTERISTICS TABLE OF GRAPHS Items Parameter Figure Efficiency vs Output power 1, 2 Power dissipation vs Output power 3, 4 Supply current (Iccact) vs Supply voltage 5 Supply current (Istby) vs Supply voltage 6 Supply current (Ireg) vs Supply voltage 7 vs Supply voltage 8 vs Load resistance 9, 10 vs Supply voltage 11, 12 vs Output power 13, 14 Shutdown current (Isd) Output power (Po) Total harmonic distortion plus noise (THD+N) vs Frequency vs Common-mode input voltage Supply voltage rejection ratio 23, 24 vs Frequency 25, 26, 27, 28 Common-mode rejection ratio (CMRR) vs Frequency 29, 30 Gain vs Frequency 31, 32, 33, 34, 35, 36, 37, 38 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. (PSRR) 15, 16, 17, 18, 19, 20, 21,22 14/21 2009.07 - Rev.A Technical Note BD5471MUV Efficiency - Output power f=1kHz RL=8Ω+33uH LC-filter(22uH+1uF) Efficiency vs Output power f=1kHz RL=4Ω+33uH LC-filter(22uH+1uF) 80 80 70 70 60 Efficiency [%] 90 90 Efficiency [%] 100 60 50 VDD=2.5V VDD=3.6V VDD=5.0V 40 30 40 30 20 20 10 10 0 VDD=2.5V VDD=3.6V VDD=5.0V 50 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Po [W] 1 0 1.1 1.2 0.2 0.4 0.6 0.8 Fig.1 600 300 500 250 1.8 2 400 Icc [mA] Icc [mA] 1.6 Fig.2 350 200 150 VDD=2.5V VDD=3.6V VDD=5.0V 100 50 300 VDD=2.5V VDD=3.6V VDD=5.0V 200 100 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Po [W] 1 0 1.1 1.2 0.2 0.4 0.6 0.8 Fig.3 1 1.2 Po [W] 1.4 1.6 1.8 2 Fig.4 Icc - VDD No load, No signal Iccstby - VDD No load, No signal 6 0.3 5 0.25 4 0.2 Iccstby [mA] Icc [mA] 1.4 Icc vs Output power f=1kHz RL=4Ω+33uH LC-filter(22uH+1uF) Icc vs Output power f=1kHz RL=8Ω+33uH LC-filter(22uH+1uF) 3 2 1 0.15 0.1 0.05 0 0 0 1 2 3 VDD [V] 4 5 6 0 1 2 Fig.5 3 VDD [V] 4 5 6 Fig.6 Iccreg - VDD No load, No signal Iccsd - VDD 0.3 0.5 0.25 0.4 0.2 Isd [uA] Iccreg [mA] 1 1.2 Po [W] 0.15 0.3 0.2 0.1 0.1 0.05 0 0 0 1 2 3 VDD [V] 4 5 0 6 Fig.7 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 1 2 3 VDD [V] 4 5 6 Fig.8 15/21 2009.07 - Rev.A Technical Note 4 BD5471MUV Output power vs RL THD+N=10% f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz Output power vs RL THD+N=1% f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz 2.5 3.0 2.5 1.5 VDD=2.5V VDD=3.6V VDD=5.0V 1.5 Po[W] 2.0 Po[W] 2.0 VDD=2.5V VDD=3.6V VDD=5.0V 1.0 1.0 0.5 0.5 0.0 0.0 4 8 12 16 20 RL[Ω] 24 28 4 32 8 12 16 20 RL[Ω] Fig.9 2.5 32 Output power vs VDD f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz 4.0 RL=8Ω：THD+N=1% 3.5 RL=8Ω：THD+N=10% 3.0 2.0 RL=4Ω：THD+N=1% RL=4Ω：THD+N=10% 2.5 Po [W] Po [W] 28 Fig.10 Output power vs VDD f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz 3.0 24 1.5 2.0 1.5 1.0 1.0 0.5 0.5 0.0 0.0 4.5 4.7 4.9 5.1 5.3 5.5 4.5 VDD [V] 4.7 4.9 VDD [V] Fig.11 10 VDD=4.5V VDD=5.0V VDD=5.0V VDD=5.5V VDD=5.5V THD+N [%] THD+N [%] 5.5 THD+N vs Output power RL=4Ω f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz VDD=4.5V 1 1 0.1 0.01 0.1 1 0.1 0.01 10 Po [W] 0.1 10 10 THD+N [%] Po=50mW Po=250mW Po=1W 1 1 THD+N vs Frequency VDD=5.5V RL=4Ω LC-filter(22uH+1uF) 30kHz-LPF THD+N vs Frequency VDD=5.5V RL=8Ω LC-filter(22uH+1uF) 30kHz-LPF 10 Po [W] Fig.14 Fig.13 THD+N [%] 5.3 Fig.12 THD+N vs Output power RL=8Ω f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz 10 5.1 0.1 Po=50mW Po=250mW Po=1W 1 0.1 0.01 0.01 10 100 1k freq [Hz] 10k 100k Fig.15 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 10 100 1k freq [Hz] 10k 100k Fig.16 16/21 2009.07 - Rev.A Technical Note BD5471MUV THD+N vs Frequency VDD=5.0V RL=8Ω LC-filter(22uH+1uF) 30kHz-LPF Po=50mW Po=250mW Po=1W 1 Po=50mW Po=250mW Po=1W 1 THD+N [%] THD+N [%] 10 THD+N vs Frequency VDD=5.0V RL=4Ω LC-filter(22uH+1uF) 30kHz-LPF 10 0.1 0.1 0.01 0.01 10 freq [Hz] 1k freq [Hz] Fig.17 Fig.18 100 1k 10k 10 100k THD+N vs Frequency VDD=4.5V RL=8Ω LC-filter(22uH+1uF) 30kHz-LPF 10 100 10k 100k THD+N vs Frequency VDD=4.5V RL=4Ω LC-filter(22uH+1uF) 30kHz-LPF 10 Po=50mW Po=250mW Po=500mW Po=50mW Po=250mW Po=500mW 1 THD+N [%] THD+N [%] 1 0.1 0.01 10 100 1k freq [Hz] 10k 0.1 0.01 100k 10 100 1k freq [Hz] Fig.19 100k Fig.20 THD+N vs Frequency RL=8Ω Po=125mW LC-filter(22uH+1uF) 30kHz-LPF 10 10k THD+N vs Frequency RL=4Ω Po=250mW LC-filter(22uH+1uF) 30kHz-LPF 10 VDD=4.5V VDD=5.0V VDD=5.5V 1 THD+N [%] THD+N [%] 1 VDD=4.5V VDD=5.0V VDD=5.5V 0.1 0.1 0.01 0.01 10 100 1k freq [Hz] 10k 100k 10 100 1k freq [Hz] Fig.21 THD+N_vs_Common Mode Input Voltage f=1kHz RL=4Ω Po=200mW LC-filter(22uH+1uF) 400Hz-30kHz 2.0 VDD=4.5V VDD=5.0V VDD=5.5V VDD=4.5V VDD=5.0V VDD=5.5V 1.5 THD+N [%] THD+N [%] 1.5 100k Fig.22 THD+N_vs_Common Mode Input Voltage f=1kHz RL=8Ω Po=100mW LC-filter(22uH+1uF) 400Hz-30kHz 2.0 10k 1.0 1.0 0.5 0.5 0.0 0.0 0 1 2 3 4 5 6 0 7 www.rohm.com 2 3 4 5 6 7 Fig.24 Fig.23 © 2009 ROHM Co., Ltd. All rights reserved. 1 Vic - Common Mode Input Voltage [V] Vic - Common Mode Input Voltage [V] 17/21 2009.07 - Rev.A Technical Note BD5471MUV PSRR RL=4Ω Vripple=0.1Vpp Inputs ac-Grounded Cin=1uF LC-filter(22uH+1uF) 30kHz-LPF PSRR RL=8Ω Vripple=0.1Vpp Inputs ac-Grounded Cin=1uF LC-filter(22uH+1uF) 30kHz-LPF 0 0 -10 -10 VDD=4.5V VDD=5.0V VDD=5.5V VDD=4.5V VDD=5.0V VDD=5.5V -20 -30 PSRR [dB] PSRR [dB] -20 -40 -50 -30 -40 -50 -60 -60 -70 -70 -80 -80 10 100 1k f [Hz] 10k 100k 10 100 1k f [Hz] PSRR RL=4Ω Vripple=0.1Vpp Inputs Floating LC-filter(22uH+1uF) 30kHz-LPF PSRR RL=8Ω Vripple=0.1Vpp Inputs Floating LC-filter(22uH+1uF) 30kHz-LPF 0 0 -10 -10 VDD=4.5V VDD=5.0V VDD=5.5V VDD=4.5V VDD=5.0V VDD=5.5V -20 PSRR [dB] PSRR [dB] -30 -40 -50 -30 -40 -50 -60 -60 -70 -70 -80 -80 10 100 1k f [Hz] 10k 10 100k 100 1k f [Hz] 100k CMRR RL=4Ω Vin=1Vpp Cin=1uF LC-filter(22uH+1uF) 30kHz-LPF -40 -40 -45 -45 CMRR [dB] VDD=4.5V VDD=5.0V VDD=5.5V -50 CMRR [dB] 10k Fig.28 Fig.27 CMRR RL=8Ω Vin=1Vpp Cin=1uF LC-filter(22uH+1uF) 30kHz-LPF -55 -60 -65 VDD=4.5V VDD=5.0V VDD=5.5V -50 -55 -60 -65 -70 -70 10 100 1k freq [Hz] 10k 100k 10 100 10k 100k Gain_vs_Frequency RL=4Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF 10 8 8 6 6 gain [dB] 10 4 VDD=4.5V VDD=5.0V VDD=5.5V 2 1k freq [Hz] Fig.30 Fig.29 Gain vs Frequency RL=8Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF gain [dB] 100k Fig.26 Fig.25 -20 10k 4 VDD=4.5V VDD=5.0V VDD=5.5V 2 0 0 10 100 1k freq [Hz] 10k 10 100k www.rohm.com 1k freq [Hz] 10k 100k Fig.32 Fig.31 © 2009 ROHM Co., Ltd. All rights reserved. 100 18/21 2009.07 - Rev.A Technical Note BD5471MUV Gain_vs_Frequency RL=4Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF 16 16 14 14 12 12 gain [dB] gain [dB] Gain_vs_Frequency RL=4Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF 10 10 VDD=4.5V VDD=5.0V VDD=5.5V 8 VDD=4.5V VDD=5.0V VDD=5.5V 8 6 6 10 100 1k freq [Hz] 10k 100k 10 100 26 26 24 24 22 22 20 20 18 18 16 14 VDD=4.5V VDD=5.0V VDD=5.5V 16 14 12 VDD=4.5V VDD=5.0V VDD=5.5V 10 8 8 6 6 10 100 1k freq [Hz] 10k 100k 10 100 28 28 26 26 24 24 22 22 gain [dB] 30 20 18 VDD=4.5V VDD=5.0V VDD=5.5V 14 10k 100k Gain_vs_Frequency RL=4Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF 30 16 1k freq [Hz] Fig.36 Fig.35 Gain_vs_Frequency RL=4Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF gain [dB] 100k Gain_vs_Frequency RL=4Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF gain [dB] gain [dB] Gain_vs_Frequency RL=4Ω Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF 10 10k Fig.34 Fig.33 12 1k freq [Hz] 20 18 16 VDD=4.5V VDD=5.0V VDD=5.5V 14 12 12 10 10 10 100 1k freq [Hz] 10k 100k 10 www.rohm.com 1k freq [Hz] 10k 100k Fig.38 Fig.37 © 2009 ROHM Co., Ltd. All rights reserved. 100 19/21 2009.07 - Rev.A Technical Note BD5471MUV ●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 using a voltage or temperature that exceeds 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 power dissipation during actual use modes, because this IC is power amp. When excessive signal inputs which the heat dissipation is insufficient 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℃, and is not intended to protect and secure an electrical appliance. (7) Load of the output terminal This IC corresponds to dynamic speaker load, and doesn't correspond to the load except for dynamic speakers. (8) The short protection of the output terminal This IC is built in the short protection for a protection of output transistors. When the short protection is operated, output terminal become Hi-Z condition and is stopped with latch. Once output is stopped with latch, output does not recover automatically by canceling the short-circuiting condition. The condition of stopping with latch is cancelled, when power supply or mute signal is turned off and turned on again. (9) Operating ranges The rated operating power supply voltage range (VDD=+4.5V～+5.5V) and the rated operating temperature range (Ta=-40℃～+85℃) are the range by which basic circuit functions is operated. Characteristics and rated output power are not guaranteed in all power supply voltage ranges or temperature ranges. (10) Electrical characteristics Electrical characteristics show the typical performance of device and depend on board layout, parts, power supply. The standard value is in mounting device and parts on surface of ROHM’s board directly. (11) Maximum output power When stereo inputs at RL=4Ω, maximum output power may not achieve up to typical value because the device heats. Ensure sufficient margins to the thermal design to get larger output power. (12) Power decoupling capacitor Because the big peak current flows through the power line, the class-D amplifier has an influence on the Audio characteristic by the capacitance value or the arrangement part of the power decoupling capacitor. (13) Power supply Use single power supply, because power supplies (4,10,15,21pin) of audio amplifier and regulator are shorted inside.Audio www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 20/21 2009.07 - Rev.A Technical Note BD5471MUV ●Ordering part number B D 5 Part No. 4 7 1 M Part No. 5471 U V - Package MUV：VQFN024V4040 E 2 Packaging and forming specification E2: Embossed tape and reel VQFN024V4040 <Tape and Reel information> 4.0±0.1 4.0±0.1 1.0MAX 2.4±0.1 0.4±0.1 7 12 19 18 0.5 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 ) 6 24 0.75 E2 2.4±0.1 1 2500pcs (0.22) +0.03 0.02 -0.02 S C0.2 Embossed carrier tape Quantity Direction of feed 1PIN MARK 0.08 S Tape 13 +0.05 0.25 -0.04 1pin (Unit : mm) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. Reel 21/21 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2009.07 - Rev.A Notice 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, communication 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. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. R0039A