LA4917H Datasheet, PDF (1/8 Pages) Sanyo Semicon Device – Monolithic Linear IC Audio Output for TV application High-Effciency Two-Channel 7W BTL Power Amplifier ICs

Ordering number : ENA0322
LA4917H
Monolithic Linear IC
Audio Output for TV application
High-Effciency Two-Channel 7W BTL
Power Amplifier ICs
Overview
The LA4917H is a high-effciency two-channel 7W BTL power amplifier IC. Increases in the number of external
components are held to a minimum by adopting both a signal-following type switching scheme in the amplifier’s output
stage power supply, and a nonlinear amplifier that has nonlinear characteristics in the signal system. The power dissipation
(thermal loss) in the actual operating range has been reduced to about 1/2 that of earlier class B amplifier ICs.
When used with the DIP-28H package, the IC dispenses with the heat sink and significantly contributes to space saving in
the end product case.
Features
• High-efficiency two-channel 7W BTL power amplifier IC (V_CC = 12V, R_L = 8Ω)
• Encapsulated in a DIP-28H package (heat sink free)
• Requires only one signal-following type switching circuit, contributing to a reduction in the number of external
components
• Provides analog outputs that generate no switching noise on the output lines
• Built-in standby switches
• Built-in protection circuits (overvoltage and thermal protection circuits)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Maximum junction temperature
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Tj max
Topr
Tstg
Conditions
No signal
Our recomnendation substrate
Ratings
Unit
24
V
6.2
W
150
°C
-25 to +75
°C
-40 to +150
°C
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance
Operating supply voltage range
Symbol
VCC
RL
VCC op
Conditions
Ratings
Unit
12
V
8
Ω
8 to 16
V
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 B8-9085 No.A0322-1/8