LA4725 Datasheet, PDF (1/3 Pages) Sanyo Semicon Device – 2-Channel BTL Power Amplifier 30 W+30 W with Standby Switch for Car Stereos

* ^{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] (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.
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
V_CC max
V_CC surge f ≤ 0.2 s, single giant pulse
I_O peak Per channel
Pd max With arbitrarily large heat sink
Topr
Tstg
Ratings
Unit
18
V
50
V
3.0
A
32
W
–35 to +85
˚C
–40 to +150
˚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
Conditions
Range where Pd max is not exceeded
Ratings
Unit
13.2
V
9 to 16
V
4
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