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參數(shù)資料
| 型號： | LA4906 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 音頻放大器 |
| 英文描述： | 17-W, 2-Channel BTL AF High-Efficiency Power Amplifier for Car Audio Systems |
| 中文描述： | 17鎢，雙通道橋接自動對焦高效率數(shù)字功放汽車音響系統(tǒng) |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 362K |
| 代理商： | LA4906 |
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 V
CC
, shorting of
output pin to ground, overvoltage, and thermal
shutdown protection.
Built-in standby switch
Clipping detection function
Package Dimensions
unit: mm
3160-SIP23HZ
Monolithic Linear IC
LA4906
Ordering number : EN
*
5714
73097HA(OT) No. 5714-1/10
Preliminary
SANYO: SIP23HZ
[LA4906]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
17-W, 2-Channel BTL AF High-Efficiency
Power Amplifier for Car Audio Systems
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max1
V
CC
max2
I
O
Peak
Pd max
With no signal, t = 1 minute
18
V
16
V
Maximum output current
Per channel
4.5
A
Allowable power dissipation
With an arbitrarily large heat sink
37.5
W
Operating temperature
Topr
–35 to +85
°C
Storage temperature
Tstg
–40 to +150
°C
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Notes: 1. Set V
CC
and R
L
to be in the range where Pd max does not exceed 37.5 W.
2. The overvoltage protection circuit operates at V
CC
= 26 V or higher.
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