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參數(shù)資料
| 型號(hào)： | LX1725ILQ |
| 廠商： | MICROSEMI CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 16 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC32 |
| 封裝： | 7 X 7 MM, ROHS COMPLIANT, PLASTIC, MLPQ-32 |
| 文件頁數(shù)： | 14/23頁 |
| 文件大小： | 377K |
| 代理商： | LX1725ILQ |
LX1725
PRODUCTION DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
21
Page
WWW
.Microse
m
i
.CO
M
15W+15W Stereo Class-D Amplifier
Filterless 30W Mono in BTL
Copyright
2004
Rev. 1.1, 2005-11-04
TM
PCB DESIGN GU IDELINES (CONTINUED )
The LX1725 is supplied in an MLPQ-7mmx7mm, 32 pin
package.
θ
JA =29.3°C/W for the package by itself in still
air. When running at a continuous 20W output power, the
on-chip power dissipation will be 3.5W assuming 85%
efficiency. With no reduction in the thermal resistance, the
die temperature will rise 103 above ambient.
θ
JC is about
4
°C/W. If the exposed pad is properly connected to a heat
sink, then the temperature rise will be reduced to around
16
°C under these condition. So the non-via type thermal
PAD is suggested.
~0.025mm
~0.85mm
~0.355mm
D2th
~5.15mm
Gmin
~6.00mm
0.3mm
1.2mm
5.00mm
0.305mm
Zmin
~7.45mm
Figure 23 –
Recommended Land Pad with Vias for LQ32 (7mm)
Zmin= D + aaa + 2(0.2)
(where pkg body tolerance aaa=0.15)
(where 0.2 is outer pad extension)
Gmin= D-2(Lmax)-2(0.05)
(where 0.05 is inner pad extension)
(Lmax=0.50 for this example)
D2th max = Gmin-2(CpL)
(where CpL=0.2)
AA
PP
LL
IICC
AA
TT
IIOO
NN
SS
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