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Class-D Speaker Amplifier for Digital Input - BD5446EFV

BD5446EFV is a Class D Speaker Amplifier designed for Flat-panel TVs in particular for space-saving and low-powerconsumption, delivers an output power of 20W+20W. This IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD)process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances upto an ultimate level. With this technology, the IC can achieve high efficiency of 87% (10W+10W output with 8O load). Inaddition, the IC is packaged in a compact reverse heat radiation type power package to achieve low power consumptionand low heat generation and eliminates necessity of external heat-sink up to a total output power of 40W. This productsatisfies both needs for drastic downsizing, 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
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD5446EFV-E2 Active HTSSOP-B54 1500 1500 Taping Yes
 
Specifications:
Vcc(Min.)[V] 10.0
Vcc(Max.)[V] 26.0
Iq[mA] 45.0
Ext. Gain No
Maximum Output Gain[dB] 34.0
I/F Stand alone
Digital Audio I/F I2S / LJ
Additional Feature Soft clip
Speaker Amp Outputs 2.0
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
Features:
  • ・ BD5446EFV has two system of digital audio interface. (I2S/LJ format, SDATA: 16 / 20 / 24bit, LRCLK: 32kHz / 44.1kHz / 48kHz, BCLK: 64fs (fixed), SYS_CLK: 256fs (fixed))
    ・ Within the wide range of the power supply voltage, it is possible to operate in a single power supply. (10~26V)
    ・ It contributes to miniaturizing, making to the thin type, and the power saving of the system by high efficiency and low heat.
    ・ S/N of the system can be optimized by adjusting the gain setting among 8 steps. (20~34dB / 2dB step)
    ・ It has the output power limitation function that can be adjusted to an arbitrary output power.
    ・ The decrease in sound quality because of the change of the power supply voltage is prevented with the feedback circuitry of the output. In addition, a low noise and low distortion are achieved.
    ・ It provides with the best stereo DAC output for the headphone usage. As a result, the output of the selection of the digital input in two systems is possible.
    8) Eliminates pop noise generated when the power supply goes on/off, or when the power supply is suddenly shut off. High quality muting performance is realized by using the soft-muting technology.
    9) BD5446EFV is a highly reliable design to which it has various protection functions. (High temperature protection, Under voltage protection, Output short protection, Output DC voltage protection and Clock stop protection)
 
 
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Technical Data
Application Note

Thermal Resistance