Class-D Speaker Amplifier for Digital Input with Built-in DSP - BM5481MUV

BM5481MUV is a Full Digital Speaker Amplifier withbuilt-in DSP (Digital Sound Processor) designed forFlat-panel TVs in particular for space-saving andlow-power consumption, delivers an output power of20W+20W. This IC employs Bipolar, CMOS, andDMOS (BCD) process technology that eliminatesturn-on resistance in the output power stage andinternal loss due to line resistances up to an ultimatelevel. With this technology, the IC can achieve highefficiency. In addition, the IC is packaged in a compactreverse heat radiation type power package to achievelow power consumption and low heat generation andeliminates necessity of external heat-sink up to a totaloutput power of 40W. This product satisfies both needsfor drastic downsizing, low-profile structures and manyfunction, high quality playback of sound system.

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* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
BM5481MUV-E2 Active VQFN48V7070 1500 1500 Taping Yes
Vcc(Min.)[V] 10.0
Vcc(Max.)[V] 26.0
Iq[mA] 65.0
Ext. Gain No
I/F 2 wire port
Digital Audio I/F I2S / LJ / RJ
Headphone Output Type Analog
Additional Feature P²Bass+, 16 Band EQ, Level DRC, 2 Band DRC, Surround, Fine Master Volume
Speaker Amp Outputs 2.0
Headphone Output Power(Max.)[mW] 35
Speaker Amp THD+N[%] 0.07
Speaker Amp Input Type Digital Signal
Speaker Amp Type Class D
Speaker Amp Output Power(Max.)[W] 20
Operating Temperature (Min.)[°C] -25
Operating Temperature (Max.)[°C] 85
  • ・ This IC includes the DSP (digital sound processor) for Audio signal processing for Flat TVs. P2Bass+( pseudo bass), 16 Band P-EQ, Level DRC, 2 Band DRC, Surround, etc.
    ・ This IC has one input systems of digital audio interface. (No needs of Master Clock) - I2S / LJ / RJ format - LRCLK: 32k/44.1k/48KHz - BCLK: 32fs / 48fs / 64fs - SDATA: 16 / 20 / 24bit
    ・ With wide range of power supply voltage.
    ・ The monaural output that can reduce the number of external parts can be used.
    ・ With high efficiency and low heat dissipation contributing to miniaturization, slim design, and also power saving of the system.
    ・ Eliminates pop-noise generated during the power supply on/off. High quality muting performance is realized by using the soft-muting technology.
    ・ This IC is built-in with various protection functions for highly reliability design. - High temperature protection - Over voltage protection, Under voltage protection - Output short protection - DC voltage protection - Clock stop protection
    ・ Small package
    ・ The Audio output amplifier of the unnecessary output coupling capacitor. - Adjust gain (Via external parts) - 2Vrms output (SVDD=3.3V, RL =10kΩ) or 35mW output (SVDD=3.3V, RL =32Ω)
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Thermal Resistance