Ordering number : EN 5715
*
Preliminary
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.
Package Dimensions
unit: mm
3113A-SIP14HZ
[LA4725]
Features
⋅
High power: supports total output of 30 W+30 W. [EIAJ
power] (V
CC
=14.4 V, THD=30 %, R
L
=4
Ω)
⋅
Less pop noise.
⋅
Designed for excellent sound quality.
(f
L
<10 Hz, f
H
=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-V
CC
short/ load
short/ overvoltage/ thermal shutdown circuit)
⋅
The LA4725 is pin-compatible with the LA4728.
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
V
CC
max
V
CC
surge f
≤
0.2 s, single giant pulse
I
O
peak
Pd max
Topr
Tstg
Per channel
With arbitrarily large heat sink
Conditions
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
V
CC
V
CC
op
R
L
op
Range where Pd max is not exceeded
Conditions
Ratings
13.2
9 to 16
4
Unit
V
V
Ω
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
SANYO [ SANYO SEMICON DEVICE ]
