LX1720

Notebook Computers:
Replaces existing internal low power linear amplifier with a high efficiency Class-D amplifier
Enables the use of virtually any external speaker without amplification
Precious battery life is extended
Fully protected power topology can withstand shorts or external speaker failures without damage, overheating or posing fire hazard Desktop Computers:
Output power capability of up to 20WRMS per channel in an area less than 3"x3",
without using expensive heatsinks
Greatly reduced power supply requirements when compared to a linear solution of same power capabilities
 Any speakers can be used including conventional home stereo speakers
Very light weight circuitry will not add to the overall weight of the system
Multimedia amplifier can be directly incorporated on the motherboard using surface mount components

Supply Voltage (PVDD, VDD) ...................................................................... -0.3V to 18V
RPWM .................................................................................................... -0.3V to VCN+0.3V
INPUT (R), INPUT (L) .......................................................................... -0.3V to VCN+0.3V
FBK+(R), FBK-(R), FBK+(L), FBK-(L), SLEEP .............................................. -0.3V to VDD
MUTE (R), MUTE (L) .................................................................................... -0.3V to 6.0V
EAOUT (R), EAOUT (L) ....................................................................... -0.3V to VCN+0.3V
CPWM, CT ............................................................................................. -0.3V to VCN+0.3V
IS+, LIS-, RIS+ ................................................................................................ VDD-2 to VDD
Operating Junction Temperature
Plastic (DB Package) ............................................................................................ 125ºC
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) ............................................................ 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified terminal.

The LX1720 is a highly-integrated, Switching Class-D Stereo Power Amplifier  Controller IC with power and size features that make it ideal for multimedia computer applications, as well as other applications where high fidelity
sound is required.

With input voltage ranging from 7V- 15V, the LX1720 is designed to operate over the full 20Hz to 20kHz audio range. Signal distortion measurements using industry standard 1kHz signal yields THD + noise levels < 1% (10 watts output). Its high efficiency (>92%) eliminates the need for heat sinks - even while delivering more than 10WRMS across 8 ohms per channel (20WRMS stereo) with 0.1 ohm SO-8 power FETs.

The LX1720's output power is limited only by external FETs and available supplyvoltage.

While offering breakthrough performance capabilities for notebooks, the LX1720 is equally attractive for multimedia systems or to drive full-size home theatre speakers.