PAM8124 XXXYWWLL A Product Line of Diodes Incorporated PAM8124 HIGH POWER AUDIO Description Pin Assignments TSSOP-24-EP The PAM8124 is a 15W efficient, Class-D audio power amplifier for driving stereo speakers in a single-ended configuration or a mono PGNDL PVCCL 1 24 speaker in a bridge-tied-load configuration. The PAM8124 can drive SDN 2 23 PGNDL stereo speakers (SE) as low as 4 . Due to the low power dissipation and high efficiency, up to 95%, the device can be used without any 3 22 LOUT PVCCL external heat sink when playing music. 4 MUTE 21 BSL LIN 5 20 AVCC The gain of the amplifier is controlled by 2 gain selectable pins, RIN 6 19 SE BTL offering 20dB, 26dB, 32dB, and 36dB gain selections. 7 18 VCM GAIN0 AGND 8 17 GAIN1 The PAM8124 is available in a TSSOP-24-EP package. AGND 9 16 BSR Features PVCCR 10 15 ROUT VCLAMP 11 14 PGNDR 30W/Ch into 8 BTL Load from 22V Supply PVCCR 12 13 PGNDR 15W/Ch into 4 SE Load from 22V Supply 10W/Ch into 8 SE Load from 24V Supply Operate from 10V to 26V Single-Ended Analog Inputs Applications Supports Multiple Output Configurations: 2-Ch Single-Ended (SE, Half-Bridge) Televisions 1-Ch Bridge-Tied Load (BTL, Full-Bridge) Home Sound Systems Four Selectable Fixed-gain Settings Active Speakers No Pop Noise for Start-up and Shut-down Sequences Internal Oscillator (No External Components Required) High Efficient Class-D Operation Eliminates Need for Heat Sinks Thermal and Short-Circuit Protection with Auto Recovery Space-Saving Surface-Mount TSSOP-24EP Package Pb-Free Package Typical Applications Circuit U1 1 24 10V to 26V PVCCL PGNDL L out1 C5 R1 220nF C7 2 23 4.7K SD SDN PGNDL 470uF L1 3 22 8ohm PVCCL LOUT 33uH 4 21 Mute MUTE BSL C2 1uF 5 20 L in LIN AVCC 10V to 26V 6 19 R in RIN SE BTL SE BTL 7 18 VCM GAIN0 G0 C1 8 17 AGND GAIN1 G1 1uF 9 16 C4 1uF AGND BSR 10 15 L2 PVCCR ROUT C3 8ohm 33uH 1uF 11 14 C8 VCLAMP PGNDR R out1 470uF 12 13 C6 R2 10V to 26V PVCCR PGNDR 220nF 4.7K 1 of 15 October 2013 PAM8124 Diodes Incorporated www.diodes.com Document number: DS36627 Rev. 1 - 2 NEW PRODUCT PAM8124 A Product Line of Diodes Incorporated PAM8124 Pin Descriptions Pin Name I/O/P Function 1, 3 PVCCL P Power supply for left channel H-bridge, not connected to PVCCR or AVCC 2 SDN I Shutdown signal for IC (low = shutdown, high = operational). TTL logic levels with compliance to AVCC A logic high on this pin disables the outputs. A low on this pin enables the outputs. TTL logic levels with 4 MUTE I compliance to AVCC 5 LIN I Audio input for left channel 6 RIN I Audio input for right channel 7 VCM O Reference for analog cells 8, 9 AGND P Analog ground for digital/analog cells in core 10, 12 PVCCR P Power supply for right channel H-bridge, not connected to PVCCL or AVCC Internally generated voltage supply for bootstrap. Not to be used as a supply or connected to any 11 VCLAMP P component other than the decoupling capacitor. 13, 14 PGNDR P Power ground for right channel H-bridge 15 ROUT O Class-D H-bridge output for right channel 16 BSR I/O Bootstrap I /O for right channel H-bridge 17 GAIN1 I Gain select most-significant bit. TTL logic levels with compliance to AVCC 18 GAIN0 I Gain select least-significant bit. TTL logic levels with compliance to AVCC A logic low on this pin enables one single-ended input in BTL configuration. A logic high on this pin 19 SE BTL I enables two inputs in SE/BTL configuration. TTL logic levels with compliance to AVCC 20 AVCC P High-voltage analog power supply 21 BSL I/O Bootstrap I /O for left channel H-bridge 22 LOUT O Class-D H-bridge output for left channel 23, 24 PGNDL P Power ground for left channel H-bridge Functional Block Diagram 2 of 15 October 2013 PAM8124 Diodes Incorporated www.diodes.com Document number: DS36627 Rev. 1 - 2 NEW PRODUCT