Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'sproductsor
equipment.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
51408 MS JK/93096HA(II)/13096HA(II) No.5245-1/9
LA4708
Overview
The LA4708 is a BTL two-channel power IC for car audio developed in pursuit of excellent sound quality. Low-region
frequency characteristics have been improved through the use of a new NF capacitorless circuit, and crosstalk which
causes “muddy” sound has been reduced by improving both circuit and pattern layout. As a result, the LA4708 provides
powerful bass and clear treble. In addition, the LA4708 features on-chip protectors and standby switch. The LA4708 is
also pin-compatible with the LA4705NA (car stereo-use 17W two-channel power IC), and can be substituted for the
LA4705NA for higher power. (When the board is shared, pins 1 and 9 must be left open.)
Features
High power : supports total output of 30W + 30W (VCC = 13.2V, THD = 30%, RL = 4Ω)
Supports RL = 2Ω (PO = 30W when VCC = 13.2V, THD = 10%)
Designed for excellent sound quality (fL < 10Hz, fH = 130kHz)
NF capacitorless
Any on time settable by external capacitor
Less pop noise
Standby switch circuit on chip (microprocessor supported)
Various protectors on chip (output-to-ground short/output-to-VCC short/load short/overvoltage/thermal shutdown circuit)
Monolithic Linear IC
For Car Stereos
20W 2-Channel BTL AF Power
Amplifier
Ordering number : EN5245B