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LA4743B Datasheet

  • LA4743B

  • 45 W Four-Channel (Bridge Circuit) Power Amplifier

  • 89.15KB

  • 9頁(yè)

  • SANYO

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Ordering number : ENN6630
Monolithic Linear IC
LA4743B
45 W Four-Channel (Bridge Circuit) Power Amplifier
Overview
The LA4743B 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
LA4743A, which differs in the amount of gain provided.
Package Dimensions
unit: mm
3236-HZIP25
[LA4743B]
29.2
25.6
4.5
Features
鈥?Maximum output power: 45 W
脳
4 channels
(V
CC
= 14.4 V, 4
鈩?/div>
load, 1 kHz)
鈥?40 W
脳
4 channels (V
CC
= 13.7 V, 4
鈩?/div>
load, 1 kHz)
鈥?Requires only seven external components and does not
require an oscillation prevention RC circuit, a noise
filter, or a BS capacitor.
R1.7
14.4
17.4
3.3
10.2
0.4
4.0
4.0
2.60
2.0
(1.0)
2.0
0.53
Functions
鈥?Muting function
鈥?Built-in standby switch
鈥?Full complement of built-in protection circuits,
including protection from shorting to V
CC
, shorting to
ground, load shorting, overvoltages, and overheating.
SANYO: HZIP25
Specifications
Maximum Ratings
at Ta = 25擄C
Parameter
Maximum supply voltage
Maximum output current
Allowable power dissipation
Operating temperature
Storage temperature
Package thermal resistance
Symbol
V
CC
max1
V
CC
max2
I
O
peak
Pd max
Topr
Tstg
胃jc
With an arbitrarily large heat sink
Signal present
No signal (for 1 minute)
Conditions
Ratings
18
26
4.5/ch
50
鈥?0 to +85
鈥?0 to +150
1
Unit
V
V
A
W
擄C
擄C
擄C/W
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鈥檚
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
O3100RM (OT) No. 6630-1/9

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