LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Over-Heat protection with automatic recovery. Under-voltage and Over-voltage detection. Short protection with automatic recovery. Mute function selectable. Lead free and green package available. (RoHS Compliant) Space saving package : 48-pin LQFP 7*7 package. FEATURES 12.0V ~ 26.0V power supply. Single-Ended analog inputs. High output power capability: (Test @1KHz,THD+N=10%.25℃) Without heat-sink Load 4Ω 8Ω 7Wx4/14.4V 4Wx4/14.4V SEx4 11Wx4/18V 10Wx4/24V BTLx2 2.1CH 14Wx2/14.4V 22Wx2/18V 7Wx2+24W/4Ω/14.4V Load PBTLx1 Load SEx4 BTLx2 2.1CH Load PBTLx1 GENERAL DESCRIPTION The LY8331F is a high efficiency class D audio power amplifier. It can to work either in dual bridge or quad single-ended output application configuration. The device features a low noise and a low power consumption in shutdown mode and support thermal shutdown protection. It also utilizes circuitry to reduce low noise during device turn-on. The outputs are also fully protected against faults with short-circuit protection (output-to-output pin) and thermal protection as well as over-voltage, under-voltage. The short-circuit protection and thermal protection include an auto-recovery feature. 24Wx2/14.4V Without heat-sink 2Ω 4Ω 40Wx1/14.4V 26Wx1/14.4V With heat-sink 4Ω 8Ω 16Wx4/22V 10Wx4/24V 30Wx2/16V 32Wx2/22V 11Wx2+37W/4Ω/18V APPLICATION With heat-sink 2Ω 4Ω 60Wx1/18V 70Wx1/24V 4 kinds of output type options: 4xSE、2.1CH、2xBTL、1xPBTL. Include High/Low pass filter OP. After-market automotive audio. Sound-bar home theater. Powered speakers. Music instrument devices. Multimedia TFT LCD TVs. System configurations require reduction in heat from the audio power amplifier. PIN CONFIGURATION LY8331F LQFP48 pin configuration (TOP VIEW) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 1 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 PIN DESCRIPTION SYMBOL BST_A OUT_A PVCC Pin No. DESCRIPTION 1 Bootstrap I/O for A channel. Speaker output for A channel.(SE Mode=VOUT+) 2/3 (BTL Mode=Left channel VOUT+) 4/5/8/9/28/29/32/33 Power supply of A、B、C、D channel. PGND 6/7/30/31 OUT_B 10/11 BST_B 12 FB_A 13 IN_A 14 FB_B 15 IN_B 16 Ground of A、B、C、D channel. Speaker output for B channel. (SE Mode=VOUT+) (BTL Mode=Left channel VOUT-) Bootstrap I/O for B channel. A-Channel Feedback. Connect feedback resistor between FB_A and IN_A to set amplifier gain. Input of A channel. B-Channel Feedback. Connect feedback resistor between FB_B and IN_B to set amplifier gain. Input of B channel. BYPASS 17 Bypass pin. AGND 18/19 Analog GND. NC 20 No connect. IN_C 21 FB_C 22 IN_D 23 FB_D 24 BST_C 25 OUT_C 26/27 OUT_D 34/35 BST_D 36 Input of C channel. C-Channel Feedback. Connect feedback resistor between FB_C and IN_C to set amplifier gain. Input of D channel. D-Channel Feedback. Connect feedback resistor between FB_D and IN_D to set amplifier gain. Bootstrap I/O for C channel. Speaker output for C channel. (SE Mode=VOUT+) (BTL Mode=Right channel VOUT+) Speaker output for D channel. (SE Mode=VOUT+) (BTL Mode=Left channel VOUT-) Bootstrap I/O for D channel. SDB 37 MUTE 38 AVCC 39 Shutdown control pin.(when LOW level in shutdown mode). Mute signal for quick enable/disable of output. (when High level in mute mode). Analog Power supply. VDD 40 Regulator output terminal.(with external capacitor) O2 41 Pure OP Output 2. IN2 42 Pure OP Negative input 2. O1 43 Pure OP Output 1. IN1 44 Pure OP Negative input 1 Mode 0/1/2 VCLAMP 45/46/47 48 Output mode selectable. Internally generated voltage power supply for all channel bootstrap capacitors. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 2 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 ORDERING INFORMATION Ordering Code LY8331F Packing Type Speaker Channels Tray Multi channel Pin/ Package Output Power (THD+N=10%) *3 LQFP48 Without heat-sink 7Wx4/4Ω/SE @14.4V, 4Wx4/8Ω/SE @14.4V, 11Wx4/4Ω/SE @18V, 10Wx4/8Ω/SE @24V, 24Wx2/4Ω/BTL @14.4V, 14Wx2/8Ω/BTL @14.4V, 22Wx2/8Ω/BTL @18V, 7Wx2+24W/4Ω/2.1CH @14.4V, With heat-sink 16Wx4/4Ω/SE @22V, 10Wx4/8Ω/SE @24V, 30Wx2/4Ω/BTL @16V, 32Wx2/8Ω/BTL @22V, 11Wx2+37W/4Ω/2.1CH @18V, Input Type Output Type SE 4xSE, 2xBTL, 2.1CH (SEx2+ BTLx1) (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. DEMO BOARD ORDERING INFORMATION Demo Board Ordering Code Pin/ Package Input Type Speaker Output Channels LY8331F-DB1 PBTL mode (Mono) LY8331F-DB2 BTLx2 mode (Stereo) LQFP48 SE LY8331D-DB3 2.1CH mode (SEx2+BTLx1) LY8331F-DB4 SEx4 mode Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 3 Notes LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier TYPICAL APPLICATION CIRCUIT Figure 1. LY8331F Application Circuit with SEx4 Schematic (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 4 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 2. LY8331F Application Circuit with BTLx2 Schematic (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 5 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 3. LY8331F Application Circuit with SEx2 + BTLx1 (2.1CH) Schematic (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 6 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 4. LY8331F Application Circuit with PBTLx1 Schematic (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 7 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Interface pin voltage Audio input pin voltage Operating Temperature Storage Temperature ESD Susceptibility Junction Temperature Soldering Temperature (under 10 sec) SYMBOL AVCC, PVCC SD, Mute IN_A/B/C/D TA TSTG VESD TJMAX TSOLDER RATING 27.0 -0.3V to PVCC +0.3V -0.3V to 6.0V -40 to 85 (I grade) -65 to 150 2000 150 260 UNIT V V V ℃ ℃ V ℃ ℃ ELECTRICAL CHARACTERISTICS (1) (TA = 25℃) PARAMETER Power supply voltage High-level input voltage Low-level input voltage SYMBOL PVCC VSDIH VMULTIH VSDIL IQ Quiescent Current (at mute mode) Drain-source on-state resistance Bypass output voltage PVCC=12~26V VMULTIL Quiescent Current Shutdown Current TEST CONDITION ISD Rdson PVCC=14V, SD≧2.0V, MUTE=0V, No Load PVCC=24V, SD≧2.0V, MUTE=0V, No Load PVCC=14V, MUTE≧2.0V, SD=high, No Load PVCC=24V, MUTE≧2.0V, SD=high, No Load PVCC=14V,VSHUTDOWN≦0.3V, No Load PVCC=24V,VSHUTDOWN ≦ 0.3V, No Load PVCC=12V, Io=1A MIN. 12.0 TYP. *2 - MAX. 26.0 2.0 - PVCC 2.0 PVCC 0 - 0.3 0 - 0.3 - 35 - - 55 - - 35 - V mA 55 - 0.25 - 0.4 - 360 VBYPASS No Load PVCC/8 PVCC=24V, VI=0V, Av=10, 60 Output offset voltage |VOS| BTL mode 8 Under-voltage protection VUV 27 Over-voltage protection VOV (*2) Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at PVCC = PVCC(TYP.) and TA = 25℃ Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 8 UNIT - mΩ - V - mV - V V LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 OPERATING CHARACTERISTICS (1)(TA = 25℃) PARAMETER Power Supply ripple rejection Output voltage noise Signal-to-noise ratio SYMBOL Ksvr Vn SNR MIN. TYP. *2 MAX. UNIT TEST CONDITION PVCC=24V, Av=10, Vripple = 200mVpp at 1kHz, RL=4Ω, BTL mode SE Mode, PVCC=24V, Av=10, f = 20 Hz to 20 kHz,RL=4Ω, Input=GND, BTL Mode, PVCC=24V, Av=10, f = 20 Hz to 20 kHz, RL=4Ω, Input=GND SE mode, PVCC=24V, Av=10, RL=4Ω, Max output THD+N<1%, f=1KHz, Input=GND, BTL mode, PVCC=24V, Av=10, RL=4Ω, Max output THD+N<1%, f=1KHz, Input=GND, 217Hz - -76 - - -75 - - 245 -72 365 -68.5 350 -69 450 -67 91 - Without A weighting - 87 - A weighting - 92 - Without A weighting - 90 - - -67 -48 -67 -62 -80 - - -71 - Input=GND dB 217Hz Input=Floating A weighting Without A weighting A weighting Without A weighting A weighting A ch. to B ch. Crosstalk Cs SE mode, B ch. to A ch. PVCC=24V, Av=10, RL=4Ω, C ch. to D ch. Po = 0.25W, D ch. to C ch. BTL mode, A ch. to C ch. PVCC=24V, Av=10, RL=4Ω, C ch. to A ch. Po = 0.25W, uV dBV uV dBV uV dBV uV dBV dB dB dB OPERATING CHARACTERISTICS (2)(TA = 25℃) PARAMETER Oscillator frequency Thermal shutdown temperature Mute attenuation SYMBOL fOSC TEST CONDITION MIN. TYP. *2 MAX. UNIT kHz 316 180 ℃ 160 dB -90 - Shutdown temp. Restore temp. VDD=24V, RL=4Ω, Po=5W, SD=High VDD=24V, Δt mute Time from mute input switches high until 350 Mute delay outputs muted. Time from mute input switches low until Δt mute 480 Unmute delay outputs muted. PVCC=24V, Cbypass=1μF. 560 Start-up time ZI PVCC=18V, Cbypass=1μF. 460 from shutdown PVCC=12V, Cbypass=1μF. 430 (*2) Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at PVCC = PVCC(TYP.) and TA = 25℃ TSD Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 9 us - ms LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier OPERATING CHARACTERISTICS (3)(TA = 25℃) Output Power per Channel (Output Type=SE mode) PARAMETER SYMBOL RL=8Ω TEST *2 CONDITION 10% 1% *2 12V 3 2 14V 3.5 2.9 14.4V 4 3 16V 5 3.8 Output-power Po 18V 6 4.8 20V 7 5.8 22V 9 7 24V 10 8.5 Unit=W 10% *2 5 6.5 7 8.5 11 13 16*3 19*3 Output Power per channel (Output Type=BTL mode) PARAMETER SYMBOL RL=8Ω TEST CONDITION 1% *2 10% *2 12V 10 8 14V 13 10.5 14.4V 14 11 16V 17 13 Output-power Po 18V 22 18 *3 20V 28 21*3 *3 22V 32 25.5*3 24V 39*3 31*3 Unit=W RL=4Ω 10% *2 1% *2 17 13.5 18 23*3 *3 19.5 24 30*3 24*3 37*3 29*3 45*3 35*3 *3 53 42.5*3 - RL=4Ω 1% *2 4 5 5.5 7 9 11 13*3 15*3 Output Power per channel (Output Type=PBTL mode) Unit=W PARAMETER SYMBOL R L =4Ω R L =3Ω R L =2Ω TEST CONDITION 10% *2 1% *2 10% *2 1% *2 10% *2 1% *2 10V 13 10 16 13 20 15 12V 18 14 23 18 28 22 14V 25 20 32 25 38 29 14.4V 26.5 21 33 26 40*3 30*3 Output-power Po 16V 41 26 41 33 49*3 36*3 *3 *3 *3 *3 *3 18V 51 32 52 42 61 37*3 20V 61*3 39*3 64*3 50*3 *3 *3 *3 22V 72 47 77 60*3 *3 *3 *3 *3 24V 77 55 92 70 (*2) Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at PVCC = PVCC(TYP.) and TA = 25℃ (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 10 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier TYPICAL PERFORMANCE CHARACTERISTICS Figure 5 THD+N vs. Output Power (@ Output type=BTL Mode, RL=4Ω, f=1kHz, AV=10) Figure 6 THD+N vs. Output Power (@ Output type=BTL Mode, RL=8Ω, f=1kHz, AV=10) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 11 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 7 THD+N vs. Output Power (@ Output type=SE Mode, RL=4Ω, f=1kHz, AV=10) Figure 8 THD+N vs. Output Power (@ Output type=SE Mode, RL=8Ω, f=1kHz, AV=10) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 12 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 9 THD+N vs. Output Power (@ Output type=PBTL Mode, RL=2Ω, f=1kHz, AV=10) Figure 10 THD+N vs. Output Power (@ Output type=PBTL Mode, RL=3Ω, f=1kHz, AV=10) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 13 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 11 THD+N vs. Output Power (@ Output type=PBTL Mode, RL=4Ω, f=1kHz, AV=10) Figure 12 Supply ripple rejection (Ksvr, RL=4Ω, BTL mode) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 14 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 13 Supply ripple rejection (Ksvr, RL=8Ω, BTL mode) Figure 14 Supply ripple rejection (Ksvr, RL=4Ω, SE mode) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 15 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 15 Supply ripple rejection (Ksvr, RL=8Ω, SE mode) Figure 16 SNR vs. Noise Level (BTL mode) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 16 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Figure 17 SNR vs. Noise Level (SE mode) Figure 18 Crosstalk vs. Frequency (BTL mode) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 17 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Figure 19 Crosstalk vs. Frequency (SE mode) Quiescent Current vs. Supply voltage (BTL mode) SD Current vs. SD Voltage Shutdown Current vs. Shutdown Voltage Quiescent Current vs. Supply Voltage (BTL mode) 50 14V 18V 24V 45 55 Quiescent Current - mA 40 Shutdown Current-mA 60 35 30 25 20 15 10 No Load 8Ω, 22uH 4Ω, 22uH 50 45 40 35 30 25 5 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.5 1.6 1.7 1.8 Shutdown Voltage - V 20 12V 14V 16V 18V 20V VDD - Supply Voltage - V Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 18 22V 24V 26V LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Quiescent Current vs. Supply voltage (SE mode) Output Power vs. Supply Voltage (BTL mode) Quiescent Current vs. Supply Voltage (SE mode) 60 Quiescent Current-mA 55 50 No Load 8Ω, 22uH 4Ω, 22uH 45 40 35 30 25 20 12V 14V 16V 18V 20V 22V VDD-Supply Voltage- V 24V 26V Output Power vs. Supply Voltage (SE mode) Supply Current vs. Output Power (RL=4Ω,BTL mode) Supply Current vs. Output Power (RL=8Ω,BTL mode) Supply Current vs. Output Power (RL=4Ω,SE mode) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 19 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Supply Current vs. Output Power (RL=8Ω,SE mode) Efficiency (VDD=14V,RL=4Ω,BTL mode) Efficiency vs. Output Power (VDD=14V,RL=4Ω,BTL mode) 100 90 Efficiency(%) 80 70 60 50 40 30 20 10 0 0 2 4 6 10 14 16 18 20 22 24 40 45 20 22 Po-Output Power(W) Efficiency (VDD=24V,RL=4Ω,BTL mode) Efficiency (VDD=24V,RL=8Ω,BTL mode) Efficiency vs. Output Power (VDD=24V,RL=8Ω,BTL mode) 100 100 90 90 80 80 70 Efficiency(%) Efficiency(%) Efficiency vs. Output Power (VDD=24V,RL=4Ω,BTL mode) 60 50 40 30 20 10 70 60 50 40 30 20 10 0 0 0 5 10 20 30 40 45 50 55 60 65 0 3 5 15 20 25 30 35 Po-Output Power(W) Po-Output Power(W) Efficiency (VDD=14V,RL=4Ω,SE mode) Efficiency (VDD=24V,RL=4Ω,SE mode) Efficiency vs. Output Power (VDD=24V,RL=4Ω,SE mode) Efficiency vs. Output Power (VDD=14V,RL=4Ω,SE mode) 100 100 90 90 Efficiency(% ) 80 Efficiency(%) 10 70 60 50 40 30 80 70 60 50 40 30 20 20 10 10 0 0 0 1 3 5 6 7 8 9 Po-Output Power(W) 10 11 12 0 4 6 8 10 12 14 Po-Output Power(W) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 20 16 18 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Efficiency (VDD=24V,RL=8Ω,SE mode) Efficiency vs. Output Power (VDD=24V,RL=8Ω,SE mode) Efficiency(%) 100 90 80 70 60 50 40 30 20 10 0 0 2 3 4 5 6 7 8 9 10 12 Po-Output Power(W) Power Dissipation vs. Output Power (VDD=24V,BTL mode) Power Dissipation vs. Output Power (VDD=24V,SE mode) Power Dissipation vs. Output Power (BTL Mode/24V) Power Dissipation vs. Output Power (SE Mode/24V) 7 3 P d-P ow er D issipation(W ) 6 P d -P o w e r D is sip a tio n (W ) 24V/4Ω 24V/8Ω 5 4 3 2 24V/4Ω 24V/8Ω 2.5 2 1.5 1 0.5 1 0 0 0 3 5 10 15 20 25 30 35 40 45 50 55 60 65 0 2 3 4 5 6 Po-Output Power(W) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 21 7 8 9 10 12 14 16 18 20 22 Po-Output Power(W) LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 EMI test result (Refer to demo-board V3.0) Mode CE(CISPR) Class B (Vertical)/14.4V CE(CISPR) Class B (Horizontal)/14.4V BTLx2 /4Ω BTLx2 /8Ω SEx4 /4Ω SEx4 /8Ω Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 22 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Mode FCC Class B (Vertical)/14.4V FCC Class B (Horizontal)/14.4V BTLx2 /4Ω BTLx2 /8Ω SEx4 /4Ω SEx4 /8Ω Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 23 LY8331F Rev. 1.6 Mode 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier CE(CISPR) Class B (Vertical)/24V CE(CISPR) Class B (Horizontal)/24V BTLx2 /4Ω BTLx2 /8Ω SEx4 /4Ω SEx4 /8Ω Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 24 LY8331F Rev. 1.6 Mode 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier FCC Class B (Vertical)/24V FCC Class B (Horizontal)/24V BTLx2 /4Ω BTLx2 /8Ω SEx4 /4Ω SEx4 /8Ω Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 25 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 APPLICATION INFORMATION Input Resistors (Ri) and Gain The LY8331 has two internal amplifier stages. The pre-amplifier gain is externally configurable, while the total gain is internally fixed. The closed-loop gain of the pre-amplifier gain is set by selecting the Rf to Ri while the total gain is fixed at 6x. So the input resistors (Ri) set the gain of the amplifier according to the equation. Pre-Amplifier Gain = Rf / Ri Output=SE Mode: Total Gain = (Rf / Ri ) x 6 AVD = 20 x log [6 x (Rf /Ri )] For example Table 1. Typical Total Gain and AVD Values (SE Mode) Rf (KΩ) 50 100 150 200 250 300 Ri (KΩ) 50 50 50 50 50 50 Total Gain 6 12 18 24 30 36 AVD (db) 15.56 21.58 25.1 27.6 29.54 31.13 Output=BTL Mode: Total Gain = (Rf / Ri ) x 12 AVD = 20 x log [12 x (Rf /Ri )] For example Table 2. Typical Total Gain and AVD Values (BTL Mode) Rf (KΩ) 50 100 150 200 Ri (KΩ) 50 50 50 50 Total Gain 12 24 36 48 AVD (db) 21.58 27.6 31.13 33.62 Input Capacitors (Ci) In typical application, Ci and the input resistance of the amplifier (Ri) form a high-pass filter with the corner frequency(fc) determined in equation. fc = 1 / ( 2πRi Ci ) The value of the input capacitor is important to consider as it directly affects the bass (low frequency) performance of the circuit. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 26 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier For example Ci is 0.1 μF, so one would likely choose a value in the range of 0.1 μF to 1.0 μF. Ri is 50 kand the specification calls for a flat bass response down to 30 Hz. Ci = 1 / ( 2πRi fc) Ci = 1 / ( 2π x 50KΩ x 30Hz)=0.106uF，One would likely choose a value of 0.1uF as this value is commonly used. Note that it is important to Ci must be 10 times smaller than the bypass capacitor to reduce clicking and popping noise from power on/off and entering and leaving shutdown. After sizing Ci for a given cutoff frequency, size the bypass capacitor to 10 times that of the input capacitor. Ci ≦ Cbypass Bypass Capacitor (Cbypass) The Bypass Capacitor (C3 ) is the most critical capacitor and serves important functions. During start-up or recovery from shutdown mode, Cbypass determines the rate at which the amplifier starts up. The Cbypass will to reduce noise caused by the power supply coupling into the output drive signal. This noise is from the internal analog reference to the amplifier, which appears as degraded the PSRR and THD+N values. The bypass capacitor (C3 ) with values of 1.0μF to 10.0μF is recommended for the best THD and noise performance. Therefore, increasing the bypass capacitor reduces clicking and popping noise from power on/off and entering and leaving shutdown. To have minimal pop, Cbypass should be 10 times larger than Ci. Cbypass ≧ Ci Power Supply Decoupling Capacitor (CS) The LY8331 is a high-performance class-D audio amplifier that requires adequate power supply decoupling to ensure the efficiency is high and total harmonic distortion (THD) is low. For higher frequency transients, spikes, or digital hash on the line, a good low equivalent-series-resistance (ESR) ceramic capacitor, typically 0.1uF~1.0uF, placed as close as possible to the device PVCC lead works best. Placing this decoupling capacitor close to the LY8331 is very important for the efficiency of the class-D amplifier, because any resistance or inductance in the trace between the device and the capacitor can cause a loss in efficiency. For filtering lower-frequency noise signals, a 1000uF or greater capacitor placed near the audio power amplifier would also help, so 1000uF or larger capacitor should be placed on each PVCC terminal. Single-Ended Output Capacitor, (CO) In single-ended (SE) applications, the dc blocking capacitor forms a high-pass filter with the speaker impedance. The frequency response rolls off with decreasing frequency at a rate of 20 dB/decade. The cutoff frequency is determined by fc = 1 / (2πRLCo) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 27 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Speaker Load (Ω) 4 6 8 Table 3. Filter Responses Reference Values SE mode - Co Capacitor select(uF) fc=180Hz fc=120Hz fc=100Hz fc=80Hz fc=60Hz 220 330 390 470 680 220 330 470 200 330 fc=40Hz 1000 680 470 fc=20Hz 2200 1500 1000 Output Filter and Frequency Response The output filter components consist of the series inductor and capacitor to ground at the LOUT and ROUT pins. There are several possible configurations, depending on the speaker impedance and whether the output configuration is single-ended (SE) or bridge-tied load (BTL). Table 4 lists the recommended values for the filter components. It is important to use a high-quality capacitor in this application. Table 4. Recommended Filter Output Components Reference Values Output Type Speaker Load (Ω) Filter Inductor (uH) Filter Capacitor (uF) Bridge Tied Load (BTL) 8 22 0.68 8 33 0.47 Single Ended (SE) 4 22 0.68 BST Capacitors The half H-bridge output stages use only NMOS transistors. Therefore, they require bootstrap capacitors for the high side of each output to turn on correctly. A 1.0uF ceramic capacitor, rated for at least 25V up, must be connected from each output to its corresponding bootstrap input. Specifically, all 1.0uF capacitor must be connected from OUT to BST pin. The bootstrap capacitors connected between the BST pins and their corresponding outputs function as a floating power supply for the high-side N-channel power MOSFET gate-drive circuitry. During each high-side switching cycle, the bootstrap capacitors hold the gate-to-source voltage high enough to keep the high-side MOSFETs turned on. VCLAMP Capacitor To ensure that the maximum gate-to-source voltage for the NMOS output transistors is not exceeded, one internal regulator clamps the gate voltage. A 1.0uF capacitor must be connected from VCLAMP pin to ground and must be rated for 25V up. The voltages at the VCLAMP terminal may vary with PVCC and may not be used for powering any other circuitry. Shutdown Function When the LY8331 not in use. The device will be to turn off the amplifier to reduce power consumption. When logic low is applied to the shutdown pin, this shutdown feature will turns the amplifier off. By switching the shutdown pin connected to GND, the device supply current draw will be minimized in idle mode. The pin cannot be left floating due to the internal did not pull-up. Mute Function The Mute pin is an input pin to control the LY8331 output state. A logic high is disable the LY8331 outputs. A logic low on this pin enables the outputs. This terminal may be used as a quick disable/enable of outputs when changing channels on a TV or transitioning between different audio sources. The Mute pin should never be left floating. For power conservation, the SD pin should be used to reduce the quiescent current to the absolute minimum level. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 28 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Over-Heat Protection and Automatic Recovery The LY8331 has a built-in over-heat protection circuit, it will turn off all power output when the chip temperature over 180℃, the chip will return to normal operation automatically after the temperature cool down to 160℃. Short Circuit Protection and Automatic Recovery The LY8331 has short circuit protection circuitry on the outputs that prevents damage to the device during output-to-output shorts , output-to-GND shorts, and output-to-PVCC shorts. When the short circuit is detected on the outputs, the part immediately disables the output drive. If the short was not removed, the protection circuitry activates again until the short is removed. PCB Layout Because the LY8331 is a class-D amplifier that switches at a high frequency, the layout of the PCB should be optimized according to the following guidelines for the best possible performance. 1. Thermal pad—The thermal pad must be soldered to the PCB for proper thermal performance and optimal reliability. Then the LY8331 must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. 2. Decoupling capacitors—The high-frequency 0.1uF decoupling capacitors should be placed as close to the PVCC pins and AVCC pin terminals as possible. And the Bypass pin capacitor and VCLAMP pin capacitor should also be placed as close to the device as possible. Large (1000uF or greater) bulk power-supply decoupling capacitors should be placed near the device on the PVCC terminals. 3. Grounding—The AVCC pin decoupling capacitor and Bypass pin capacitor should each be grounded to analog ground (AGND). The PVCC decoupling capacitors and VCLAMP capacitors should each be grounded to power ground (PGND). Analog ground and power ground should be connected at the thermal pad, which should be used as a central ground connection or star ground for the LY8331. 4. Output filter—The reconstruction filter should be placed as close to the output terminals as possible for the best EMI performance. The capacitors should be grounded to power ground. 5. The input resistors need to be very close to the device input pins so noise does not couple on the high impedance nodes between the input resistors and the input amplifier of the device. 6. Making the high current traces going to PVCC, GND, VO+ and VO- pins of the device should be as wide as possible to minimize trace resistance. If these traces are too thin, the device’s performance and output power will decrease. The input traces do not need to be wide, but do need to run side-by-side to enable common-mode noise cancellation. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 29 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 DEMO BOARD INFORMATION-1 (Satellite Type – SEx4 or BTLx2 Mode) Demo Board Application Circuit (SEx4 Mode) Figure 20 LY8331 Demo Board Application Circuit (SEx4 Mode) (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Demo Board BOM List: No. Description 1 Capacitor,2200uF 2 Capacitor,1000uF 3 Capacitor, 1uF 4 Capacitor, 0.47uF 5 6 7 8 9 10 Capacitor, 0.22uF Capacitor, 0.1uF Resistor, 150KΩ Resistor, 100KΩ Resistor, 51KΩ Resistor, 4.7KΩ Fixed Inductors 22uH 11 LY8331 V3.0 BOM List (SEx4 Mode) Reference Amount Note DIP, 35V,105℃, C1, 1 10*20, EC Cap. DIP, 35V,105℃, C11,C21,C31,C41 4 10*20, EC Cap. C3,C5,C12,C22,C32,C42, 8 SMD0805 ,80%/-20%,NP C25, C45, C10,C20,C30,C40, 8 SMD0805,80%/-20%,NP C16,C26,C36,C46 C14,C24,C34,C44 4 SMD0805,80%/-20%,NP C7,C15,C35, 3 SMD0805,80%/-20%,NP R12,R22,R32,R42 4 SMD0805,1/8W, 1% R1,R2 2 SMD0805,1/8W, 1% R10,R20,R30,R40 4 SMD0805,1/8W, 1% R11,R21,R31,R41 4 SMD0805,1/8W, 1% L1,L2,L3,L4 4 DIP TOKO (A7502BY-330M) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 30 Remark LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Demo Board Application Circuit (BTLx2 Mode) Figure 21 LY8331 Demo Board Application Circuit (BTLx2 Mode) (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Demo Board BOM List: No. Description 1 Capacitor,2200uF 2 Capacitor, 1uF 3 Capacitor,0.47uF 4 5 6 7 8 Capacitor, 0.22uF Capacitor, 0.1uF Resistor, 150KΩ Resistor, 100KΩ Resistor, 51KΩ Fixed Inductors 22uH 9 LY8331 V3.0 BOM List (BTLx2 Mode) Reference Amount Note DIP, 35V,105℃, C1, 1 10*20, EC Cap.. C3,C5,C12,C22,C32,C42, 8 SMD0805 ,80%/-20%,NP C25,C45 C10,C20,C16,C26,C36, 6 SMD0805 ,80%/-20%,NP C46 C14,C24,C34,C44 4 SMD0805 ,80%/-20%,NP C7,C15,C35, 3 SMD0805,80%/-20%,NP R12,R32 2 SMD0805,1/8W, 1% R1,R2 2 SMD0805,1/8W, 1% R10,R30 2 SMD0805,1/8W, 1% DIP, TOKO L1,L2,L3,L4 4 (A7502BY-330M) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 31 Remark LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Demo Board Application Circuit (2.1CH mode) SEx2 + BTLx1 mode Figure 22 LY8331 Demo Board Application Circuit (2.1CH mode) (*3) The device must be mounted to the PCB board and increase a large area of copper or recommended to use external heat sink. But when total output power ≧40W, the device must be use external heat sink. Demo Board BOM List (2.1CH mode) No. 1 2 Description Capacitor,2200uF Capacitor,470uF 3 Capacitor, 1uF 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Capacitor,0.47uF Capacitor,0.22uF Capacitor, 0.1uF Capacitor, 0.068uF Capacitor, 0.033uF Capacitor, 0.022uF Capacitor, 0.01uF Resistor, 150KΩ Resistor, 100KΩ Resistor, 68KΩ Resistor, 51KΩ Resistor, 33KΩ Resistor, 27KΩ Resistor, 12KΩ Resistor, 4.7KΩ Fixed Inductors 22uH 19 LY8331 V3.0 BOM List (2.1CH mode) Reference Amount Note DIP 35V,105℃,10*20, EC Cap. C1, 1 DIP 35V,105℃,10*20, EC Cap. C11,C21 2 C3,C5,C30,C50,C15,C35, 10 SMD0805,80%/-20%,NP C12,C22,C32,C42, C16,C26,C36,C46 4 SMD0805,80%/-20%,NP C14,C24,C34,C44,C51 5 SMD0805,80%/-20%,NP C7,C25,C45 3 SMD0805 ,80%/-20%,NP C55 1 SMD0805,80%/-20%,NP C53,C54 2 SMD0805,80%/-20%,NP C52 1 SMD0805,80%/-20%,NP C10,C20 2 SMD0805,80%/-20%,NP R12,R22,R32,R55 4 SMD0805,1/8W, 1% R1,R2 2 SMD0805,1/8W, 1% R50,R51 2 SMD0805,1/8W, 1% R10,R20,R30 3 SMD0805,1/8W, 1% R52 1 SMD0805,1/8W, 1% R54 1 SMD0805,1/8W, 1% R53 1 SMD0805,1/8W, 1% R11,R21 2 SMD0805,1/8W, 1% L1,L2,L3,L4 4 DIP, TOKO (A7502BY-220M) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 32 Remark LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier 2.1 Channel (SEx2+BTLx1 Mode) Hi-Low Pass filter cutoff frequency chart: Figure 23 LY8331 2.1CH mode Hi-Low Pass filter cutoff frequency chart Demo Board Application Circuit (PBTL mode) Figure 24 LY8331 Demo Board Application Circuit (PBTL mode) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 33 LY8331F 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Rev. 1.6 Demo Board BOM List (PBTL mode) No. 1 Description Capacitor,1000uF 2 Capacitor, 1uF 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Capacitor,0.47uF Capacitor,0.22uF Capacitor,0.22uF Capacitor, 0.1uF Capacitor, 0.068uF Capacitor, 0.033uF Capacitor, 0.022uF Resistor, 150KΩ Resistor, 120KΩ Resistor, 100KΩ Resistor, 68KΩ Resistor, 33KΩ Resistor, 27KΩ Resistor, 12KΩ Fixed Inductors 22uH 17 LY8331 V3.0 BOM List (PBTL mode) Reference Amount Note DIP 35V,105℃,10*20, EC Cap. C1,C2 2 C3,C5,C9,C12,C22,C32, 8 SMD0805,80%/-20%,NP C42,C50 C14,C44 2 SMD0805,80%/-20%,NP C51 1 SMD0805,80%/-20%,NP C13,C43 5 DIP, MSC,100Vdc, ±10% C7,C15,C25,C35,C45 5 SMD0805 ,80%/-20%,NP C55 2 SMD0805,80%/-20%,NP C53,C54 2 SMD0805,80%/-20%,NP C52 1 SMD0805,80%/-20%,NP R12,R55 2 SMD0805,1/8W, 1% R10 1 SMD0805,1/8W, 1% R1,R2 2 SMD0805,1/8W, 1% R50,R51 2 SMD0805,1/8W, 1% R52 1 SMD0805,1/8W, 1% R54 1 SMD0805,1/8W, 1% R53 1 SMD0805,1/8W, 1% L1,L2,L3,L4 4 DIP, TOKO (A7502BY-220M) PBTL Mode (Hi-Low Pass filter cutoff frequency chart): Figure 25 LY8331 PBTL Mode Hi-Low Pass filter cutoff frequency chart Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 34 Remark LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Demo Board Artwork (SEx4、BTLx2、2.1CH and PBTL Mode) Top Silkscreen Top Layer Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 35 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Composite view (TOP Layer) Bottom Silkscreen Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 36 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier Bottom Layer Composite view (Bottom Layer) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 37 LY8331F Rev. 1.6 30Wx2(BTLx2) Stereo / 11Wx2(SE)+37Wx1(BTL) 2.1CH / 16Wx4(SEx4) / 70Wx1(PBTL) Mono Class D Audio Amplifier PACKAGE OUTLINE DIMENSION LQFP 48 Pin Package Outline Dimension Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 38