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LA4743A Datasheet(PDF) 1 Page - Sanyo Semicon Device

Part # LA4743A
Description  45 W Four-Channel (Bridge Circuit) Power Amplifier
Download  9 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA4743A Datasheet(HTML) 1 Page - Sanyo Semicon Device

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Ordering number : ENN6629
O3100RM (OT) No. 6629-1/9
Overview
The LA4743A is a 45 W 4-channel power amplifier IC for
car stereo systems. It features a built-in bridge circuit and
the ability to radically reduce the number of external
components required. It is also pin compatible with the
LA4743B, which differs in the amount of gain provided.
Features
• Maximum output power: 45 W
× 4 channels
(VCC = 14.4 V, 4 Ω load, 1 kHz)
• 40 W
× 4 channels (V
CC = 13.7 V, 4 Ω load, 1 kHz)
• Requires only seven external components and does not
require an oscillation prevention RC circuit, a noise
filter, or a BS capacitor.
Functions
• Muting function
• Built-in standby switch
• Full complement of built-in protection circuits,
including protection from shorting to VCC, shorting to
ground, load shorting, overvoltages, and overheating.
Package Dimensions
unit: mm
3236-HZIP25
2.0
2.0
29.2
2.60
(1.0)
25.6
0.53
R1.7
0.4
4.5
4.0
4.0
SANYO: HZIP25
[LA4743A]
LA4743A
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
45 W Four-Channel (Bridge Circuit) Power Amplifier
Monolithic Linear IC
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.
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max1
Signal present
18
V
VCC max2
No signal (for 1 minute)
26
V
Maximum output current
IOpeak
4.5/ch
A
Allowable power dissipation
Pd max
With an arbitrarily large heat sink
50
W
Operating temperature
Topr
–40 to +85
°C
Storage temperature
Tstg
–40 to +150
°C
Package thermal resistance
θjc
1
°C/W
Specifications
Maximum Ratings at Ta = 25°C


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