PAM8019 3W STEREO CLASS-D AUDIO AMPLIFIER AND CLASS AB HEADPHONE DRIVER WITH DC VOLUME CONTROL, NON-CLIP POWER LIMIT AND UVP Description Pin Assignments The PAM8019 is a Stereo 3W Class D audio power amplifier for driving bridged-tied speakers and includes a Stereo Class AB amplifier Top View for driving headphones. The advanced 64 step DC volume control minimizes external components allowing simple and accurate volume control over the gain range of +20dB (Volume=0V) to -60dB (Volume=5V). Integrated non-clip power limit technology suppresses output automatically with programmable power limit, improving the sound 1 R N L N OUT OUT quality and helping to protect the speakers. Programmable under HPR HPL OUT OUT voltage protection (UVP) can be used to shut down the PAM8019 at a GND VDD pre-determined voltage level helping to eliminate speaker pop by SD shutting down before the power supply collapses. Bypass UVP R PL IN The PAM8019 is available in the power efficient and space saving U-QFN4040-20. Features 3W Stereo Class D Amplifier with Class AB Headphone Amplifier Filter Free and Low EMI Architecture Operating Voltage: 2.8V to 5.5V Applications Low Quiescent Current of 7mA at a V of 5V DD LCD Monitors and TVs 64 Step DC Volume Control with Hysteresis from -60dB to +20dB Projectors / All-In-One Computers Output Power Portable / Active Speakers - Class D Amplifier THD+N=1% Portable DVD Players / Game Machines VDD=5V,Load =4 Po=2.4W / Load =8 Po=1.4W - Class D Amplifier THD+N=10% VDD=5V, Load =4 Po=3.0W / Load =8 Po=1.7W - Class AB Headphone Amplifier VDD=5V, Load=32 Po=60mW Speaker or Headphone Select Non Clip Power Limit (NCPL) Function OVP and Programmable UVP Protection Thermal and Over-Current Protection with Auto-Recovery Power Enhance Package U-QFN4040-20 Lead Free and Green Devices Available (RoHS Compliant) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See PAM8019 Typical Applications Circuit VDD VDD C S4 0.1mF VDD CS1 C 0.1 mF S2 13 0.1mF 16 VDD Gate 17 Driver - L P OUT L Left Channel IN 7 Volume Input Signal Control + Ci1 1mF 15 Gate L N OUT Speaker 4 3 Driver PWM Modulator SD Shut Down Mute Over Temp. 9 V DD Mute Protection R7 PL 11 Power Short Crt. Limit Protect R8 C1 1 mF Bypass 4 Bypass Bias and C S3 CB Vref 0.1 mF 2.2mF 20 Volume 8 Volume R6 VDD 50k Control Gate PWM Modulator Driver - R P OUT 19 R Volume Right Channel IN 5 Control Input Signal + Ci2 1mF Gate 1 R N V OUT DD Speaker 4 Driver Controller R4 100k 10 HP/Spk OSC. UVLO HP/SPK Controller R5 14 2 12 6, 18 GND C3 R3 C2 220mF 220 mF R2 HPL HPR R1 OUT OUT VDD 2 of 12 PAM8019 May 2016 Diodes Incorporated www.diodes.com Document number: DS38822 Rev. 1 - 2 ADVANCED INFORMATION NEW PRODUCT Controller