Datasheet PAM8965 (Diodes)

PAM8965 12W STEREO CLASS-D AUDIO AMPLIFIER WITH SYNCHRONOUS BOOST, SSM AND EXTERNAL AUDIO FEEDBACK Description Pin Assignments
The PAM8965 is an extremely high-efficiency Class-D stereo audio
(Top View)
power amplifier with an integrated synchronous boost converter. The PAM8965 can drive two channels with 12W each into 4Ω speakers. P P D N N D P T T D T T N D D N B U S V S U B N The integrated amplifier can achieve system efficiency of 92% N G F O B P B O F G G P R R R R R R R P (at VBAT = 7.4V). The device consumes exceptionally low quiescent 40 39 38 37 36 35 34 33 32 31 current (10mA at VBAT = 7.4V) and very low shutdown current (0.7μA). 1 30 FLT VBAT1 The integrated current-mode boost converter provides regulated power EN 2 29 VBAT2 to a feature-laden Class-D stereo amplifier. These include: RINP 3 28 PVDD RINN 4 27 PVDD Spread spectrum modulation (SSM) for EMI suppression (audio and boost), which enables the use of inexpensive ferrite bead filters. LINN 5 26 BST LINP 6
PAM8965
25 SW Non-clipping power limit, which uses 41-step automatic gain control. SSM 7 YYWWXX 24 SW Thermal foldback, which reduces output power as the chip heats up. VDD 8 23 PGND GND 9 22 PGND External audio feedback pins, which allow for customization of sound 10 21 by using feedback network design. Alternatively, these pins can be GND GAIN used for Kelvin connection to speaker terminals. 11 12 13 14 15 16 17 18 19 20 P P P IM D D N N N D B T T T T GAIN pin to program audio gain at 0.5dB steps such that external L N D B N P G F U S V S U F G P L O B P B O L P resistors are not required to adjust gain, which can result in gain error. L L L L L Out-of-audio switching for the boost converter, which minimizes
W-QFN5050-40 (Type US)
audible noise coming from components on the board. Protection features include under-voltage and over-voltage protection on VBAT, over-voltage protection on PVDD, short circuit protection on all audio outputs, cycle-by-cycle current limit on boost converter, thermal shutdown of the entire system, DC protection for speakers, and an FLT pin that provides a fault flag.
Features Applications
Operates from 2.8V to 8.5V Supply Portable Electronics 2  12W (10% THD+N) into 4Ω Load with VBAT = 7.4V (2SxP) Bluetooth Speakers 2  8W (10% THD+N) into 6Ω Load with VBAT = 3.7V (1SxP) Wireless Speakers Auto Gain Control Responds to: Music Instruments Thermal Foldback High-Capacitance Piezo Actuator Drive Non-Clip Power Limit Virtual Reality 3D Active Feedback GAIN Pin PDA, GPS, Game Machines Externally Adjustable Gain from 26dB to 6dB with 0.5dB Steps Exceptionally High Overall System Efficiency (92% @ VBAT = 7.4V) Very Low I Q = 10mA (VBAT = 7.4V) for Boost + Stereo Very Low Shutdown Current = 0.7μA DC Protection for Speaker Auto-Recovery on Short-Circuit Protection & Thermal Shutdown External Audio Feedback Pins
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ 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. PAM8965 1 of 25 May 2021 Document number: DS42707 Rev. 2 - 2
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