PAM8407 XXXYWWLL NOT RECOMMENDED FOR NEW DESIGN USE PAM8408 2x3W Stereo Differential Input Class D Audio Amplifier PAM8407 with Up/Down Volume Control Description Pin Assignments The PAM8407 is a filter-less Class-D amplifier with high SNR and differential input that helps eliminate noise. Advanced 32-step Up/Down volume control minimizes external components and allows SO-16 speaker volume control. The PAM8407 supports 2.5V to 6V operation make it idea for up to 4 1 16 VDD RINP cells alkaline battery applications. 15 2 ROUTP RINN 14 ROUTN Features like greater than 87% efficiency and small PCB area make 3 SD the PAM8407 Class-D amplifier ideal for portable applications. The 13 GND UP 4 output uses a filter-less architecture minimizing the number of 5 12 GND DOWN external components and PCB area whilst providing a high GND 6 11 LOUTN performance, simple and lower cost system. LINN 7 LOUTP 10 The PAM8407 built in auto recovery SCP (short circuit protection) and LINP VDD 8 9 thermal shutdown. The PAM8407 is available in SO-16 package. Features Applications 3W Output at 10% THD with a 4 load and 5V Supply PC Speaker Wireless Speaker 2.4W Output at 1% THD with a 4 Load and 5V Supply 2.5V to 6.0V VDD Operating Home Sound Systems Fully Differential Input Active Speakers Docking stations Filterless, Low Quiescent Current and Low EMI Low THD+N 32-stepUp/Down Volume Control from -80dB to 24dB Superior Low Noise: 60uV Minimize Pop/Clip Noise Auto Recovery Short Circuit Protection Thermal Shutdown Pb-Free SO-16 Package Typical Applications Circuit V DD C5 1 RINP RINP VDD 16 01. uF C2 C6 RINN 2 RINN 1uF ROUTP 15 01. uF 4 ON 3 SD ROUTN 14 SHDN 4 UP PAM8407 GND 13 5 DOWN GND 12 6 GND LOUTN 11 C7 4 LINN 7 LINN LOUTP 10 C2 01. uF 1uF C8 V DD 8 LINP LINP VDD 9 uF 01. 1 of 12 September 2020 PAM8407 Diodes Incorporated www.diodes.com Document number: DS36815 Rev. 2 - 3 A t t e n u a t i o n D e c o d e r I n t e rf a c e C o n t r o l 2x3W Stereo Differential Input Class D Audio Amplifier PAM8407 with Up/Down Volume Control Pin Descriptions PIN Number PIN Name Description 1 RINP Positive Input of Right Channel Power Amplifier. 2 RINN Negative Input of Right Channel Power Amplifier. 3 SD Full Chip Shutdown Control Input (active low). 4 UP Volume UP Control (active low)Ground Connection. 5 DOWN Volume down Control (active low) 6,12,13 GND Ground. 7 LINN Negative Input of Left Channel Power Amplifier. 8 LINP Positive Input of Left Channel Power Amplifier. 9,16 VDD Power Supply. 10 LOUTP Positive Output of Left Channel Power Amplifier. 11 LOUTN Negative Output of Left Channel Power Amplifier. 14 ROUTN Negative Output of Right Channel Power Amplifier. 15 ROUTP Positive Output of Right Channel Power Amplifier. Functional Block Diagram V DD GN D ROUT P RINP + DRIVER MODULATOR ROUT N RINN - VDD Thermal Protection VDD UP SD VDD INTERNAL BIAS AND OSCILLATOR REFERENCES DOWN O SC Current Protection + LIN N MODULATOR LOU T N DRIVER LIN P - LOU T P VDD GND Absolute Maximum Ratings ( T = +25C, unless otherwise specified.) A Parameter Rating Unit Supply Voltage (VDD) 6.5 V Pins Input Voltage (SD, UP, Down, IN) -0.3 to VDD+0.3 V Storage Temperature -65 to +150 C Maximum Junction Temperature +150 C Junction to ambient thermal resistance 40 C/W 2 of 12 September 2020 PAM8407 Diodes Incorporated www.diodes.com Document number: DS36815 Rev. 2 - 3