Overview
The LA4906 is a BTL two-channel power amplifier for
use in car audio systems. It uses a signal-following
switching technique in the power supply for the amplifier
output stage and a newly-developed nonlinear amplifier
that features nonlinear characteristics in the signal system.
These features hold increases in the number of external
components to a minimum, and reduce power dissipation
(and thus heat generation) in the practical operating region
to about 1/2 that of earlier class B amplifier ICs. This can
contribute significantly to miniaturization and weight
reduction in the heat sink and to reduction of the heat
generated within the end product case.
Features
Power dissipation reduced by 50% (for music at average
power levels, as compared to earlier Sanyo products)
The number of required signal-following switching
circuits has been reduced to just one circuit for two
channels, reducing the number of external components.
The output is a pure analog signal; no switching noise
whatsoever appears on the output lines.
Uses a single-voltage power supply from 8 to 18 V.
Provides a full range of built-in protection circuits,
including shorting of output pin to VCC, shorting of
output pin to ground, overvoltage, and thermal
shutdown protection.
Built-in standby switch
Clipping detection function
Package Dimensions
unit: mm
3160-SIP23HZ
0.5
37.0
30.0
1.5
2.0
1
0.9
23
R1.7
4.5
9.5
16.8
3.6
1.8
13.8
0.4
2.45
R=0.4
Monolithic Linear IC
Ordering number : ENN*5714A
41000TN (OT)/73097HA(OT) No. 5714-1/10
Preliminary
SANYO: SIP23HZ
[LA4906]
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
17-W, 2-Channel BTL AF High-Efficiency
Power Amplifier for Car Audio Systems
LA4906
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max1
With no signal, t = 1 minute
18
V
VCC max2
16
V
Maximum output current
IO Peak
Per channel
4.5
A
Allowable power dissipation
Pd max
With an arbitrarily large heat sink
37.5
W
Operating temperature
Topr
–35 to +85
°C
Storage temperature
Tstg
–40 to +150
°C
Specifications
Maximum Ratings
at Ta = 25°C
Notes: 1. Set VCC and RL to be in the range where Pd max does not exceed 37.5 W.
2. The overvoltage protection circuit operates at VCC = 26 V or higher.
Any and all SANYO 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 representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.