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LA4725 fiches techniques PDF

Sanyo - 2-Channel BTL Power Amplifier 30 W+30 W with Standby Switch for Car Stereos

Numéro de référence LA4725
Description 2-Channel BTL Power Amplifier 30 W+30 W with Standby Switch for Car Stereos
Fabricant Sanyo 
Logo Sanyo 





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LA4725 fiche technique
*Ordering number : EN 5715
Preliminary
Monolithic Linear IC
LA4725
2-Channel BTL Power Amplifier (30 W+30 W)
with Standby Switch for Car Stereos
Overview
The LA4725 is a BTL two-channel power IC for car
audios developed in pursuit of excellent sound quality.
Low-region frequency characteristics have been improved
through the use of a new NF capacitorless circuit, and
crosstalk which causes “muddy” sound has been reduced
by improving both circuit and pattern layout. As a result
the LA4725 provides powerful bass and clear treble.
Features
High power: supports total output of 30 W+30 W. [EIAJ
power] (VCC=14.4 V, THD=30 %, RL=4 )
Less pop noise.
Designed for excellent sound quality.
(fL<10 Hz, fH=130 kHz)
Any rise time settable by an external capacitor.
Standby switch circuit on chip. (microcontroller support-
ed)
Various protectors on chip.
(output-to-ground short/ output-to-VCC short/ load
short/ overvoltage/ thermal shutdown circuit)
The LA4725 is pin-compatible with the LA4728.
Package Dimensions
unit: mm
3113A-SIP14HZ
[LA4725]
SANYO: SIP14HZ
Specifications
Maximum Ratings at Ta = 25 ˚C
Parameter
Maximum supply voltage
Surge supply voltage
Maximum output current
Allowable power disspation
Operating temperature
Storage temperature
Symbol
Conditions
VCC max
VCC surge f 0.2 s, single giant pulse
IO peak Per channel
Pd max With arbitrarily large heat sink
Topr
Tstg
Ratings
18
50
3.0
32
–35 to +85
–40 to +150
Unit
V
V
A
W
˚C
˚C
Recommended Conditions at Ta = 25 ˚C
Parameter
Recommended supply voltage
Operating voltage range
Recommended load resistance
Symbol
VCC
VCC op
RL op
Conditions
Range where Pd max is not exceeded
Ratings
13.2
9 to 16
4
Unit
V
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
32497RM(KOTO) No.5715-1/3

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