LA4705 Datasheet, PDF (1/8 Pages) Sanyo Semicon Device – 15 W 2-channel BTL AF Power Amplifier for Car Stereos

Ordering number: EN3848D
Monolithic Linear IC
LA4705
15 W 2-channel BTL AF Power Amplifier
for Car Stereos
Overview
The LA4705 is a BTL two-channel power IC for car audio and
radio-cassette players 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
LA4705 provides powerful bass and clear treble. In addition,
the LA4705 features on-chip protectors and standby switch.
Package Dimensions
unit: mm
3109-SIP18H
[LA4705]
Features
. _{High power: supports total output of 25 W + 25 W}
(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 on time settable by external capacitor}
. _{Standby switch circuit on chip (microprocessor supported)}
. _{Various protectors on chip}
(output-to-ground short/output-to-V_CC short/
load short/overvoltage/thermal shutdown circuit)
. _{NF capacitorless}
. _{Supports RL = 2 Ω}
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Surge supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V_CC max 1
V_CC max 2
V_CC surge
Pd max
Topr
Tstg
Conditions
No signal, t = 60 s
With signal
t % 0.2 s, single giant pulse
Arbitrarily large heat sink
* Set V_CC, R_L in a range that does not exceed Pd max = 37.5 W
SANYO : SIP18H
Ratings
Unit
24
V
18
V
50
V
37.5
W
–35 to +85
°C
–40 to +150
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D3096HA(II)/12693TS/4152TS No.3848-1/8