ALTERNATIVE 5W STEREO AUDIO AMPLIFIER

1 PAM8406 Document number: DS43342 Rev. 2 - 2 1 of 13 May 2021 Diodes Incorporated PAM8406 ALTERNATIVE 5W STEREO AUDIO AMPLIFIER Description The PAM8406 is a 5W AUDIO AMPLIFIER with an ALTERNATIVE option between Class-D and Class-AB output, which makes the device very ideal for efficiency-EMI compatible applications. The PAM8406 s low THD+N and high SNR allow it to achieve high-quality sound reproduction. The device s fully differential output with new filter-less architecture (Class-D Mode) allows the device to drive the speaker directly, requiring no low-pass output filters and DC blocking capacitors, thus saving system cost and PCB area.

2 The device has an efficiency of up to 90%. It can extend battery life, which is ideal for portable applications. It is fully protected against faults with short-circuit protection and thermal protection. The PAM8406 is available in the SOP-16L/SOP-16(EP) package. Features ALTERNATIVE Output: Class-D or Class-AB 5W Output at 10% THD with a 2 Load and 5V Power Supply at Class-D Mode 3W Output at 10% THD with a 4 Load and 5V Power Supply Filterless, Low Quiescent Current and No EMI Low THD+N at Fully Output Range Superior Low Noise Efficiency up to 90% with Class-D Mode No Pop At Turn-On/Off Full Short-Circuit Protection With Auto Recovery Thermal Shutdown Few External Components to Save Space and Cost Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen- and Antimony-Free.

3 Green Device (Note 3) For automotive applications requiring specific change control ( parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. Pin Assignments 1 PAM8406 XATYWWLL8169+OUT_LPGNDL-OUT_LPVDDLMUTEVD DINLVREF+OUT_RPGNDR-OUT_RPVDDRSHDNGNDINR MODE Applications LCD TVs Multimedia Speakers AM/FM Systems DABs Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

4 2. See for more information about Diodes Incorporated s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. PAM8406 Document number: DS43342 Rev. 2 - 2 2 of 13 May 2021 Diodes Incorporated PAM8406 Typical Applications Circuit +SHDNINLINRA udio to +OUT_RVDDMUTEONOFFONVREF-OUT_R+OUT_L-OUT _LPVDDLPVDDRGNDPGNDLPGNDRMODEABD Pin Descriptions Pin Number Pin Name Function 1 +OUT_L Left Channel Positive Output 2 PGNDL Power GND 3 -OUT_L Left Channel Negative Output 4 PVDDL Power VDD 5 MUTE Mute Control Input (active low) 6 VDD Analog VDD 7 INL Left Channel Input 8 VREF Internal analog reference, connect a bypass capacitor from VREF to GND.

5 9 MODE High: Class-D; Low: Class-AB 10 INR Right Channel Input 11 GND Analog GND 12 SHND Shutdown Control Input (active low) 13 PVDDR Power VDD 14 -OUT_R Right Channel Negative Output 15 PGNDR Power GND 16 +OUT_R Right Channel Positive Output PAM8406 Document number: DS43342 Rev. 2 - 2 3 of 13 May 2021 Diodes Incorporated PAM8406 Functional Block Diagram Absolute Maximum Ratings (@ TA = +25 C, unless otherwise specified.) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability.

6 All voltages are with respect to ground. Parameter Rating Unit Supply Voltage V Input Voltage to VDD + Operation Temperature Range -40 to +85 C Maximum Junction Temperature 150 Operation Junction Temperature -40 to +125 Storage Temperature -65 to +150 Soldering Temperature 300, 5 sec Recommended Operating Conditions (@ TA = +25 C, unless otherwise specified.) Parameter Rating Unit Supply Voltage Range to V Operation Temperature Range -40 to +85 C Junction Temperature Range -40 to +125 C Thermal Information Parameter Package Symbol Max Unit Thermal Resistance (Junction to Ambient) SOP-16 JA 110 C/W Thermal Resistance (Junction to Case) SOP-16 JC 23 PAM8406 Document number: DS43342 Rev.

7 2 - 2 4 of 13 May 2021 Diodes Incorporated PAM8406 Electrical Characteristics (@ TA = +25 C, VDD = 5V, Gain = 24dB, RL = 8 , both Class-AB and D mode, unless otherwise specified.) Symbol Parameter Test Conditions Min Typ Max Units VDD Supply Voltage V PO Output Power THD+N = 10%, f = 1 KHz, RL = 2 (Class-D) VDD = W VDD = VDD = THD+N = 1%, f = 1 KHz, RL = 2 (Class-D) VDD = W VDD = VDD = THD+N = 10%, f = 1 KHz, RL = 4 VDD = W VDD = VDD = THD+N = 1%, f = 1 KHz, RL = 4 VDD = W VDD = VDD = THD+N = 10%, f = 1 KHz, RL = 8 VDD = W VDD = VDD = THD+N = 1%, f = 1 KHz, RL = 8 VDD = W VDD = VDD = THD+N Total Harmonic Distortion Plus Noise VDD = , PO = to 1W , RL = 8 f = 1kHz % VDD = , PO = to , RL = 8 VDD = , PO = to 2W, RL = 4 f = 1kHz % VDD = , PO = to 2W, RL = 4 VDD = , PO = to 2W.

8 RL = 2 (Class-D) f = 1kHz % VDD = , PO = to 1W, RL = 2 (Class-D) GV Closed Loop Gain VDD = 3V to 5V 24 dB PSRR Power Supply Ripple Rejection VDD = , Inputs AC-Grounded with CIN = F f = 100Hz -70 dB f = 1kHz -65 CS Crosstalk VDD = , PO = , RL = 8 , GV = 24db f = 1kHz -95 dB SNR Signal-to-Noise Ratio VDD = , THD = 1%, GV = 24db f = 1kHz 90 dB VN Output Noise VDD = , Inputs AC-Grounded A-Weighting 100 V No A-Weighting 150 Efficiency RL = 8 , THD = 10% Class D Mode f = 1kHz 90 % RL = 4 , THD = 10% 87 RL = 2.

9 THD = 10% 80 IQ Quiescent Current VDD = No Load 10 mA VDD = 8 VDD = 6 Quiescent Current VDD = No Load 25 mA VDD = 15 VDD = 10 PAM8406 Document number: DS43342 Rev. 2 - 2 5 of 13 May 2021 Diodes Incorporated PAM8406 Electrical Characteristics (cont.) (@ TA = +25 C, VDD = 5V, Gain = 24dB, RL = 8 , both Class-AB and D mode, unless otherwise specified.) Symbol Parameter Test Conditions Min Typ Max Units IMUTE Muting Current VDD = VMUTE = mA ISD Shutdown Current VDD = to VSD = < 1 A RDS(ON) Static Drain-to-Source On-State Resistor IDS = 500mA, VGS = 5V PMOS 180 m NMOS 140 fSW Switching Frequency VDD = to Class-D 250 kHz VOS Output Offset Voltage Input AC-GND, VDD = 10 mV VIH Enable Input High Voltage VDD = V VIL Enable Input Low Voltage VDD = VIH MUTE Input High Voltage VDD = V VIL MUTE Input Low Voltage VDD = VIH MODE Input High Voltage VDD = V VIL MODE Input Low Voltage VDD = OTP Overtemperature Protection No Load.

10 Junction Temperature VDD = 150 C OTH Overtemperature Hysterisis 30 PAM8406 Document number: DS43342 Rev. 2 - 2 6 of 13 May 2021 Diodes Incorporated PAM8406 Typical Performance Characteristics (@ TA = +25 C, VDD = 5V, Gain = 24dB, RL = 8 , both Class-AB and D mode, unless otherwise specified.) PAM8406 Document number: DS43342 Rev. 2 - 2 7 of 13 May 2021 Diodes Incorporated PAM8406 Typical Performance Characteristics (cont.) (@ TA = +25 C, VDD = 5V, Gain = 24dB, RL = 8 , both Class-AB and D mode, unless otherwise specified.)