LA4919N Datasheet, PDF (1/6 Pages) Sanyo Semicon Device – Monolithic Linear IC Two-Channel 10W BTL High-Efficiency TV Audio Output Power Amplifier

Ordering number : ENA0323
LA4919N
Monolithic Linear IC
Two-Channel 10W BTL High-Efficiency
TV Audio Output Power Amplifier
Overview
The LA4919N is a 2-channel 10W BTL high-efficiency power amplifier. By using a signal following switching system for
the power supply to the amplifier output stage and by including a nonlinear amplifier in the signal system, the LA4919N
holds the number of external components to a minimum and reduces the power consumption (thermal loss) in the operating
range to one half that of earlier class B power amplifiers.
The use of a DIP-28H package obviates the need for a separate heat sink and can contribute to internal space savings in end
products.
Features
• High-efficiency 2-channel × 10W BTL power amplifier (V_CC = 15V, R_L = 8Ω)
• Provided in a DIP-28H package (no heat sink is required)
• The number of required signal-following switching circuits has been held to a single circuit, thus reducing even further
the number of external components required.
• The output is a fully analog signal, and no switching noise appears on the output lines.
• Built-in standby switch (amplifier block/headphone block)
• Built-in headphone amplifier : 2 inputs/2 outputs (VG = 6dB, PO = 60mW)
• Built-in protection circuits (overvoltage and thermal protection circuits)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Thermal resistance
Maximum junction temperature
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
θj-c
Tj max
Topr
Tstg
Conditions
No signal
With a infinity large heat sink
Ratings
24
15
3
150
-25 to +75
-40 to +150
Unit
V
W
°C/W
°C
°C
°C
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
N1506 MS PC B8-7776, B8-7179 No.A0323-1/6