EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX9736 Mono/Stereo High-Power Class D Amplifier General Description Features Independently Controlled Dual Paths The MAX9736A/B/D Class D amplifiers provide high- performance, thermally efficient amplifier solutions. The Wide 8V to 28V Supply Voltage Range MAX9736A delivers 2 x 15W into 8 loads, or 1 x 30W Spread-Spectrum Modulation Enables Low EMI into a 4 load. The MAX9736B/D deliver 2 x 6W into 8 Solution loads or 1 x 12W into a 4 load. Passes CE EMI Limits with Low-Cost Ferrite Bead/Capacitor Filter These devices operate from 8V to 28V and provide a high Low BOM Cost PSRR, eliminating the need for a regulated power supply. High 67dB PSRR at 1kHz Reduces Supply Cost The MAX9736 offers up to 88% efficiency at 12V supply. 88% Efficiency Eliminates Heatsink Pin-selectable modulation schemes select between filter- Thermal and Output Current Protection less modulation and classic PWM modulation. Filterless modulation allows the MAX9736 to pass CE EMI limits < 1A Shutdown Mode with 1m cables using only a low-cost ferrite bead and Mute Function capacitor on each output. Classic PWM modulation is Space-Saving, 32-Pin TQFN Packages, 7mm x 7mm optimized for best audio performance when using a full x 0.8mm (MAX9736A/B), 5mm x 5mm x 0.8mm LC filter. (MAX9736D) A pin-selectable stereo/mono mode allows stereo opera- Applications tion into 8 loads or mono operation into 4 loads. In LCD/PDP/CRT Monitors mono mode, the right input op amp becomes available as LCD/PDP/CRT TVs a spare device, allowing flexibility in system design. MP3 Docking Stations Comprehensive click-and-pop reduction circuitry mini- Notebook PCs mizes noise coming into and out of shutdown or mute. PC Speakers Input op amps allow the user to create summing amplifiers, All-in-One PCs lowpass or highpass filters, and select an optimal gain. The MAX9736A/B/D are available in 32-pin TQFN packages and specified over the -40C to +85C temperature range. Ordering Information appears at end of data sheet. Simplified Diagram 8V TO 28V 8 AUDIO INPUTS 8 SHDN MAX9736 INPUT RESISTORS AND MUTE MONO CAPACITORS SELECT GAIN AND CUTOFF FREQUENCY 19-3108 Rev 4 11/19MAX9736 Mono/Stereo High-Power Class D Amplifier Absolute Maximum Ratings PVDD to PGND.......................................................-0.3V to +30V Continuous Power Dissipation (T = +70C) A AGND to PGND.....................................................-0.3V to +0.3V 32-Pin TQFN 5mm x 5mm Multiple Layer PCB INL, INR, FBL, FBR, COM to AGND........-0.3V to (V + 0.3V) (derate 34.5mW/C above +70C).................................2.76W REG MUTE, SHDN, MONO, MOD, REGEN to AGND.......-0.3V to +6V ................................................................................29C/W JA REG to AGND..............................................-0.3V to (VS + 0.3V) ..................................................................................2C/W JC VS to AGND (Note 1)................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A OUTL+, OUTL-, OUTR+, 32-Pin TQFN 7mm x 7mm Multiple Layer PCB OUTR-, to PGND................................-0.3V to (PVDD + 0.3V) (derate 37mW/C above +70C)....................................2.96W C1N to PGND..........................................-0.3V to (PVDD + 0.3V) ................................................................................27C/W JA C1P to PGND..........................(PVDD - 0.3V) to (V + 0.3V) ..................................................................................1C/W BOOT JC BOOT to PGND.............................(V - 0.3V) to PVDD + 12V Operating Temperature Range.............................-40C to +85C C1P OUTL+, OUTL-, OUTR+, OUTR-, Storage Temperature Range..............................-65C to +150C Short Circuit to PGND or PVDD.............................Continuous Junction Temperature.......................................................+150C Thermal Limits (Notes 2, 3) Lead Temperature (soldering, 10s)...................................+300C Note 1: VS cannot exceed PVDD + 0.3V. See the Power-Supply Sequencing section. Note 2: Thermal performance of this device is highly dependant on PCB layout. See the Applications Information section for more details. Note 3: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information 32 TQFN-EP (7mm x 7mm) Package Code T3277-3 Outline Number 21-0144 32 TQFN-EP (5mm x 5mm) Package Code T3255-4 Outline Number 21-0140 For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com