Class-D Speaker Amplifier for Digital Input with Built-in DSP - BM5449MWV

BM5449MWV 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 of25W+25W. This IC employs state-of-the-art Bipolar,CMOS, and DMOS (BCD) process technology thateliminates turn-on resistance in the output power stageand internal loss due to line resistances up to anultimate level. With this technology, the IC can achievehigh efficiency of 90% (10W+10W output with 8 load).In addition, the IC is packaged in a compact reverseheat radiation type power package to achieve low powerconsumption and low heat generation and eliminatesnecessity of external heat-sink up to a total output powerof 40W. This product satisfies both needs for drasticdownsizing, low-profile structures and many function,high quality playback of sound system.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
Constitution Materials List
BM5449MWV-E2 Active UQFN056V7070 1500 1500 Taping inquiry Yes
Vcc(Min.)[V] 10.0
Vcc(Max.)[V] 26.0
Iq[mA] 80.0
Ext. Gain No
Maximum Output Gain[dB] 23.0
I/F 2 wire port
Digital Audio I/F I2S / LJ / RJ
Additional Feature P²Volume, P²Bass+, 8 Band EQ, 512 Tap FIR, 2 Band DRC, Surround, Fine Master Volume
Speaker Amp Outputs 2.0
Speaker Amp THD+N[%] 0.05
Speaker Amp PSRR[dB] 70.0
Speaker Amp Input Type Digital Signal
Speaker Amp Type Class D
Speaker Amp Output Power(Max.)[W] 25
Operating Temperature (Min.)[°C] -25
Operating Temperature (Max.)[°C] 85
  • ・ With wide range of power supply voltage. (VCC=10 to 26V)
    ・ This IC includes the DSP (digital sound processor) for Audio signal processing for Flat TVs. Synchronous SRC, Surround, 8 Band EQ, 1 Band EQ (for Sub), Volume, 2 Band DRC, Delay RAM for phase revised Close Over Filter, 512 Taps FIR Filter, P2Volume, P2Base+, Higher Sound Complement (High Generator), Soft Clipper, Hard Clipper
    ・ This IC has two inputs systems of digital audio interface. I2S / LJ / RJ format, LRCLK: 8 to 192 kHz, BCLK: 32fs / 48fs / 64fs, SDATA: 16 / 20 / 24bits BCLK: 32fs / 48fs / 64fs, SDATA: 16 / 20 / 24bits
    ・ Two Digital Audio Output for Audio DAC and headphone.
    ・ One PWM Output for Subwoofer.
    ・ The sound quality decrease by the power supply variation is prevented with the output feedback circuit. In addition, a low noise and a low distortion are achieved. Mass electrolytic capacitor is unnecessary because it is strong in the power supply variation.
    ・ It contributes to miniaturizing, making to the thin type, and the power saving of the system by highly effective (10W+10W output and 8 on-load) 90% and low generation of heat.
    ・ Low current at the Power down Mode.
    ・ The pop noise at power supply on/off is prevented, and a more high-quality soft mute function is built into. Highly reliable design with built-in various protection functions.
    ・ The component side product can be decreased because of small package (UQFN056V7070).
    ・ The maximum output in the stereo is 25W+25W (VCC=20.5V, 8 load).
    ・ The maximum output in the monaural(PBTL) is 50W(VCC=20.5V, 4 load)
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Thermal Resistance