LA4809M Datasheet, PDF (1/15 Pages) Sanyo Semicon Device – Stereo Headphone Amplifier

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
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.
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's products or
equipment.
O2809 SY 20091023-S00004 / O2109 SY PC No.A1569-1/15