LA4708N Datasheet, PDF (1/9 Pages) Sanyo Semicon Device – Monolithic Linear IC For Car Stereos 20W 2-channel BTL AF Power Amplifier

Ordering number : ENA1783A
LA4708N
Monolithic Linear IC
20W 2-channel BTL AF Power
Amplifier for Car Stereo
http://onsemi.com
Overview
The LA4708N is a BTL two-channel power IC for car audio developed in pursuit of excellent sound quality. Low-region
frequency characteristics have been improved through the use of a new NF capacitor-less circuit, and crosstalk which
causes “muddy” sound has been reduced by improving both circuit and pattern layout. As a result, the LA4708N provides
powerful bass and clear treble. In addition, the LA4708N features on-chip protectors and standby switch.
Features
 High power : supports total output of 30W  30W (VCC = 13.2V, THD = 30%, RL = 4)
 Supports RL = 2 (PO = 30W when VCC = 13.2V, THD = 10%)
 Designed for excellent sound quality (fL  10Hz, fH = 130kHz)
 NF capacitor-less
 Any on time settable by external capacitor
 Less pop noise
 Standby switch circuit on chip (microprocessor supported)
 Various protectors on chip (output-to-ground short/output-to-VCC short/load short/overvoltage/thermal shutdown circuit)
Specifications
Maximum Ratings at Ta = 25C
Parameter
Symbol
Conditions
Maximum supply voltage
VCC max 1 No signal, t = 60s
VCC max 2
Surge supply voltage
Maximum output current
Allowable power dissipation
VCC surge
IO peak
Pd max
t 0.2s, single giant pulse
Per channel
Arbitrarily large heat sink
Operating temperature
Topr
Storage temperature
Tstg
* Set VCC, RL in a range that does not exceed Pd max = 37.5W
Ratings
Unit
24
V
16
V
50
V
4.5
A
37.5
W
35 to 85
C
40 to 150
C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
ORDERING INFORMATION
See detailed ordering and shipping information on page 9 of this data sheet.
Semiconductor Components Industries, LLC, 2014
March, 2014
SIP18H
30314HK/61610SY 20100405-S0010 No.A1783-1/9