LA4632 Datasheet, PDF (1/8 Pages) Sanyo Semicon Device – 10 W Two-Channel BTL AF Power Amplifier for Audio Applications

Ordering number : ENN8178
SANYO Semiconductors
DATA SHEET
LA4632
Monolithic Linear IC
10 W Two-Channel BTL AF Power
Amplifier for Audio Applications
Overview
The LA4632 is a pin compatible version of the LA4631 (5 W × two channel single ended type) BTL power amplifier
IC. The LA4632's pin compatibility makes it possible to share a common printed circuit board among a series of end
products differentiated by power rank. Note that the LA4631 has a pin 13, and that it is necessary to provide a hole for
this pin if the same printed circuit board is to be shared. Also, some of the external components used differ. The
LA4632 provides a full complement of built-in protection circuits, including protection against shorting to the power
supply, shorting to ground, load shorting, and excessive temperatures.
Functions and Applications
• Two-channel BTL power amplifier for audio applications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Maximum output current
Allowable power dissipation
Maximum junction temperature
Operating temperature
Storage temperature
Symbol
V_CC max
I_O peak
Pd max
Tj max
Topr
Tstg
Conditions
With no input signal
Per channel
With an infinitely large heat sink
Rated value
Unit
24
V
2.5
A
25
W
150
°C
–20 to +75
°C
–40 to +150
°C
Operating Characteristics at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance range
Allowable operating supply voltage range *¹
Symbol
V_CC
R_L op
V_CC op
Conditions
When RL = 8 Ω
When RL = 6 Ω
When RL = 4 Ω
Rated value
Unit
13
V
4 to 8
Ω
5.5 to 20
V
5.5 to 17
V
5.5 to 13
V
Caution: V_CC, R_L, and the output level must be set for the size of the heat sink used so that the Pd max range is not exceeded.
*1. When both channels are operating such that I_Opeak = 1.0 A per channel is exceeded.
If the IC is operated such that I_Opeak = 1.0 A per channel is not exceeded, the IC can be used in the range 5.5 to 20 V (in the ranges where Pd max is
not exceeded) with a load of R_L = 4 to 8 Ω.
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
33105TN (OT) No.8178-1/8