LX1725ILQ Microsemi Analog Mixed Signal Group, LX1725ILQ Datasheet - Page 21

• Manufacturer Part Number: LX1725ILQ
• Description: IC AMP AUDIO 32W STER D 32MLPQ
• Manufacturer: Microsemi Analog Mixed Signal Group
• Series: AudioMAX™r
• Type: Class Dr

Specifications of LX1725ILQ

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 32W x 1 @ 8 Ohm; 16W x 2 @ 4 Ohm
• Voltage - Supply: 12 V ~ 35 V, ±6 V ~ 17.5 V
• Features: Depop, Differential Inputs, Mute, PWM, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: 32-MLPQ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Copyright © 2004
Rev. 1.2, 2005-12-06
The LX1725 is supplied in an MLPQ-7mmx7mm, 32 pin
package. θ
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
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
~0.355mm
0.305mm
Figure 23 – Recommended Land Pad with Vias for LQ32 (7mm²)
Ø 0.3mm
~0.85mm
TM
JA
=29.3°C/W for the package by itself in still
1.2mm
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
5.00mm
P C B D E S I G N G U I D E L I N E S ( C O N T I N U E D )
~5.15mm
D2th
Integrated Products Division
JC
~6.00mm
is about
Gmin
®
Microsemi
~7.45mm
Zmin
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)
15W+15W Stereo Class-D Amplifier
Filterless 30W Mono in BTL
P
RODUCTION
D
ATA
S
HEET
LX1725
Page
21