MP1720

2.7W Mono Class D Low-EMI High-Efficiency Audio Amplifier

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Datasheet

Description

The MP1720 is a high efficiency Class-D audio amplifier. It utilizes a full bridge output structure capable of delivering 2.7W into 4Ω speaker. This device exhibits the high fidelity of a class AB amplifier with an efficiency of 90% which dramatically reduces solution size by integrating the following:

l 250mΩ power MOSFETs (V_IN =3.3V)

l Startup / Shutdown pop elimination

l Short circuit /Thermal overload Protection

The MP1720 features a pin-selectable 1MHz or 1.3MHz frequency control or can be synchronized to an external clock source. The flexible switching frequency and internal EMI-reduction scheme eliminates the need for an output LC filter and passes emission standards without filter & with considerable cable.

The MP1720 has five fixed gain options. MP1720-3: 3dB; MP1720-6: 6dB; MP1720-9: 9dB; MP1720-12: 12dB; MP1720-216: 21.6dB.

The MP1720 is available in 10-pin MSOP-EP and 10-pin QFN packages.

Features & Benefits

Passes FCC-Radiated Emissions Standards with 24inch of Cable without output filter
2.7W Into 4Ω with 5V VIN @ 10% THD+N
Up to 90% Efficiency
Flexible Switching Frequency setting
Low Noise (53μV Typical) with 3.3V VIN
15ms Start-up time Eliminates pop
Low Quiescent Current (4mA @3.3V)
Low Shutdown Current (0.1μA)
Full Bridge Output Drive
Fully Differential Input
Short circuit Protection
Thermal Shutdown