EVALUATION KIT AVAILABLE MAX98306 Stereo 3.7W Class D Amplifier General Description Features The MAX98306 stereo 3.7W Class D amplifier provides Output Power 3.7W at 3, 10% THD, 1.7W at 8, Class AB audio performance with Class D efficiency. 10% THD, with 5V Supply This device offers five selectable gain settings (6dB, 9dB, Passes EMI Limit Unfiltered with Up to 12in of 12dB, 15dB, and 18dB) set by a single gain-select input Speaker Cable (GAIN). High 83dB PSRR at 217Hz Active emissions limiting, edge-rate, and overshoot control Spread-Spectrum Modulation and Active circuitry combined with a filterless spread-spectrum modu- Emissions Limiting lation scheme (SSM) provide excellent EMI performance Five Pin-Selectable Gains while eliminating the need for output filtering found in tradi- tional Class D devices. These features reduce application Excellent Click-and-Pop Suppression component count. Thermal and Overcurrent Protection The ICs 2.0mA quiescent current with a 3.7V supply Low-Current Shutdown Mode extends battery life in portable applications. Space-Saving, 3mm x 3mm x 0.75mm, The IC is available in a 14-pin TDFN (3mm x 3mm x 14-Pin TDFN 0.75mm) package specified over the extended -40C to +85C temperature range. Ordering Information Applications PIN- TOP PART TEMP RANGE PACKAGE MARK Smartphones MP3 Players Tablets Portable Audio Players MAX98306ETD+ -40C to +85C 14 TDFN +AEV Cellular Phones VoIP Phones +Denotes a lead(Pb)-free/RoHS-compliant package. Accessory Speakers Typical Application Circuit +2.6V TO +5.5V 0.1F 10F PVDD 1F INL+ OUTL+ 1F INL- OUTL- PVDD GAIN GAIN CONTROL 1F INR+ OUTR+ 1F INR- OUTR- PVDD MAX98306 SHDN PGND 19-5919 Rev 2 12/17MAX98306 Stereo 3.7W Class D Amplifier Absolute Maximum Ratings Voltage Duration of Short Circuit PVDD to PGND ...................................................-0.3V to +6V OUTL+, OUTR+, OUTL-, OUTL+, OUTR+, OUTL-, OUTR- OUTR- to PGND or PVDD .......................................Continuous to PGND ........................................-0.3V to (V + 0.3V) OUTL+ to OUTL- or OUTR+ to OUTR- .................Continuous PVDD All Other Pins to PGND .......................................-0.3V to +6V Continuous Power Dissipation for a MultiLayer Board (T = +70C) A Current TDFN (deration 24.4mW/C above +70C) ............1951.2mW Continuous Current Into/Out of PVDD, PGND, Junction Temperature .....................................................+150C OUTL+, OUTR+, OUTL-, OUTR- ............................800mA Operating Temperature Range .......................... -40C to +85C Continuous Input Current (all other pins) .....................20mA Storage Temperature Range ........................... -65C to +150C Lead Temperature (10s, soldering) ................................+300C Soldering Temperature (reflow) .......................................+260C 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. (Note 1) Package Thermal Characteristics Junction-to-Ambient Thermal Resistance ( ) ..............41C/W JA Junction-to-Case Thermal Resistance ( ) .....................8C/W JC Note 1: 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. Electrical Characteristics (V = V = 3.7V, V = 0V, A = 12dB (GAIN = PVDD), R = , R connected between OUT + to OUT -, 20Hz to 22kHz PVDD SHDN PGND V L L AC measurement bandwidth, T = T to T , unless otherwise noted. Typical values are at T = +25C.) (Note 2) A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS GENERAL Supply Voltage Range V Guaranteed by PSRR test 2.6 5.5 V PVDD Undervoltage Lockout UVLO 1.8 2.3 V V = 3.7V 2 2.7 PVDD Quiescent Supply Current I mA PVDD V = 5.0V 2.6 PVDD Shutdown Supply Current I V = 0, T = +25C < 1 10 A SHDN SHDN A Turn On Time t 3.2 10 ms ON Bias Voltage V 1.62 V /2 2.15 V BIAS PVDD GAIN = PGND 17.5 18 18.5 GAIN = 100k to PGND 14.5 15 15.5 Voltage Gain A GAIN = PVDD 11.5 12 12.5 dB V GAIN = 100k to PVDD 8.5 9 9.5 GAIN = unconnected 5.5 6 6.5 Channel-to-Channel Gain 0.1 % Tracking A = 18dB (GAIN = PGND) 22 33 V A = 15Db (GAIN = 100k to PGND) 31 46 V Input Resistance R A = 12dB (GAIN = PVDD) 44 65 k IN V A = 9dB (GAIN = 100k to PVDD) 62 93 V A = 6dB (GAIN = unconnected) 89 131 V Common-Mode Rejection Ratio CMRR f = 1kHz, input referred 79 dB IN Output Offset Voltage V T = +25C (Note 3) 1 3 mV OS A Maxim Integrated 2 www.maximintegrated.com