Ordering number : ENA1569A

LA4809M

Monolithic Linear IC

Stereo Headphone Amplifier

Overview

LA4809M is a 2-channels power amplifier to drive the headphone with wide supply voltage range.

To minimize the effects of power supply, the regulator circuit for control of the output power is built-in to enable setting of

the output power value adequate for the headphone amplifier (2 types of set value available). This product also has the

standby function, and is suitable as a driver for wide-ranging headphone.

Applications

Headphone driver for TV and audio equipment

Features

• 2-channels power amplifier built-in (maximum output power value changeable according to the setting)

Maximum output power A = 55mW Standard (Pin 10 : Open)

Maximum output power B = 160mW Standard (Pin 10 : GND)

*VCC = 12V, RL = 16Ω, THD = 10%

*Change to another power value possible by adding the external parts

• Regulator built-in : Limited change of the output power value due to fluctuation of supply voltage

High-Ripple rejection ratio

• Standby function (also used for voice muting) : Current drain at standby = 0.01μA Standard (VCC = 12V)

• Overheat protection circuit built-in

• Wide supply voltage range (differing according to the set value of maximum output power) : VCC = 3.6V to 17V

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

device, the customer should always evaluate and test devices mounted in the customer

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.

O2809 SY 20091023-S00004 / O2109 SY PC No.A1569-1/15