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LA4440 Schematic ( PDF Datasheet ) - ON Semiconductor

Teilenummer LA4440
Beschreibung 2-Channel, Power Amplifier
Hersteller ON Semiconductor
Logo ON Semiconductor Logo 




Gesamt 13 Seiten
LA4440 Datasheet, Funktion
Ordering number : EN750F
LA4440
Monolithic Linear IC
6W 2-Channel, Bridge 19W(typ)
Power Amplifier
http://onsemi.com
Features
Built-in 2 channels (dual) enabling use in stereo and bridge
amplifier applications.
Dual : 6W2 (typ)
Bridge : 19W (typ)
Minimum number of external parts required.
Small pop noise at the time of power supply ON/OFF and
good starting balance.
Good ripple rejection : 46dB (typ)
Good channel separation.
Small residual noise (Rg=0).
Low distortion over a wide range from low frequencies to
high frequencies.
Easy to design radiator fin.
Built-in audio muting function.
Built-in protectors.
a. Thermal protector
b. Overvoltage, surge voltage protector
c. Pin-to-pin short protector
Package Dimensions
unit : mm
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter
Maximum supply voltage
Surge supply voltage
Allowable power dissipation
Thermal resistance
Operating temperature
Storage temperature
Symbol
VCC max1
VCC max2
VCC (surge)
Pd max
j-c
Topr
Tstg
Conditions
Quiescent (t=30s)
Operating
t 0.2s
Tc=75°C, See Pd max – Ta characteristic
Junction-to-case
Ratings
25
18
50
15
3
–20 to +75
–40 to +150
unit
V
V
V
W
°C/W
C
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.
Recommended Operating Conditions at Ta = 25C
Parameter
Supply voltage
Load resistance
Symbol
VCC
RL
Stereo
Bridge
Conditions
Ratings
13.2
2 to8
4 to 8
unit
V
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
ORDERING INFORMATION
See detailed ordering and shipping information on page 13 of this data sheet.
Semiconductor Components Industries, LLC, 2013
July, 2013
21500TH(KT)/90196RM/33194HO/8064KI/3233KI/O070KI,TS No.750-1/13






LA4440 Datasheet, Funktion
LA4440
(g) In case of applying audio muting in each application circuit, the following circuit is used.
6VVMVCC
Recommended VM=9V
ATT=40dB (Rg=600)
Flow-in current IO is calculated by the following formula.
IO=
VM – VBE
RO
In case of increasing the muting attenuation, resistor 5.6kis connected in series with the input, and then the
attenuation is made to be 55dB. Be careful that connecting an input capacitor causes pop noise to be increased at
the time of application of AC muting. Increased RO, CO make it possible to reduce the noise. In case of com-
pletely cutting off power IC, pin (5) is grounded, and then DC control is available and the attenuation is made to
be .
Stereo
: 20Ω≤R100
Bridge No.1 : 20Ω≤R100
Bridge No. 2 : 0Ω≤R50
Pin Voltage (unit : V)
Pin No.
1
Function pin
CH1
NF
Pin Voltage at
quiescent mode
1.4
2
CH1
NF
0.03
3
Pre
GND
0
4
AC
Audio
Muting
0
5
DC
13.0
6
CH2
IN
0.03
7
CH2
NF
1.4
8
CH2
Power
GND
0
9
CH2
BS
11.9
10
CH2
OUT
6.8
11
VCC
13.2
12
CH1
OUT
6.8
13
CH1
BS
11.9
14
CH1
Power
GND
0
Proper Cares in Using IC
· Maximum ratings
If the IC is used in the vicinity of the maximum ratings, even a slight variation in conditions may cause the maximum
ratings to be exceeded, thereby leading to breakdown. Allow an ample margin of variation for supply voltage, etc. and
use the IC in the range where the maximum ratings are not exceeded.
· Printed circuit board
When making the board, refer to the sample printed circuit pattern and be careful that no feedback loop is formed
between input and output.
· Oscillation preventing capacitor
Normally, a polyester film capacitor is used for 0.1µF + 4.7. The capacitance value can be reduced to 0.047µF depend-
ing on the stability of the board.
· Others
Connect the radiator fin of the package to GND.
No.750–6/13

6 Page









LA4440 pdf, datenblatt
LA4440
Proper Cares in Mounging Radiator Fin
1. The mounting torque is in the range of 39 to 59N · cm.
2. The distance between screw holes of the radiator fin must coincide with the distance between screw holes of the IC.
With case outline dimensions L and R referred to, the screws must be tightened with the distance between them as
close to each other as possible.
3. The screw to be used must have a head equivalent to the one of truss machine screw or binder machine screw defined
by JIS. Washers must be also used to protect the IC case.
4. No foreign matter such as cutting particles shall exist between heat sink and radiator fin. When applying grease on the
junction surface, it must be applied uniformly on the whole surface.
5. IC lead pins are soldered to the printed circuit board after the radiator fin is mounted on the IC.
No.750–12/13

12 Page





SeitenGesamt 13 Seiten
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