YDA144 Datasheet, PDF (9/26 Pages) YAMAHA CORPORATION – STEREO 2.1W Non-Clip DIGITAL AUDIO POWER AMPLIFIER

YDA144
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●Snubber Circuit and schottky barrier diode
It is necessary to connect the snubber circuit and schottky barrier diode with the output terminal to prevent IC destruction
by the output short-circuit when using it on the following conditions. The constant and the circuit are as follows.
Power supply voltage range
2.7V≦PVDD≦4.5V
4.5V＜PVDD≦5.25V
Load conditions
R_L=8Ω
Wiring inductance＞4µH
R_L=4Ω or 8Ω
Snubber Circuit
Between OUT*+ and OUT*-
Rs=1.5Ω, Cs=330pF
Between OUT*+ and OUT*-
Rs=1.5Ω, Cs=680pF
Schottky barrier diode
Need less
Between OUT** and PVDD
Recommended parts
Schottky barrier diode: ROHM, RB161VA-20
Forward current surge peak = 5A or more, Average forward current = 1A or more,
Forward voltage (I_F=1A) = 0.38V or less
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＜Snubber circuit and Schottky barrier diode＞
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