LA4422中文资料
Monolithic Linear IC
Ordering number:ENN556F
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE T okyo Bldg., 1-10, 1 Chome, Ueno, T aito-ku, TOKYO, 110-8534 JAPAN
Package Dimensions
unit:mm
Features
? High gain (53dB typ.) and high output (5.8W typ).? Soft clip.
? Small number of external parts (4 pcs).
? Bridge construction usable (P O =18W/R L =4?).
? Built-in thermal shutdown circuit against load short, over-load.
? Built-in circuit to prevent pop noise at the time of power supply ON.
? SIP package (single ended pins) facilitating easy mount-ing.
?C ?C
Operating Conditions at Ta = 25?C
Specifications
Absolute Maximum Ratings at Ta = 25?C
Operating Characteristics at Ta = 25?C, V CC =13.2V , R L =4?, f=1kHz, 100×100×1.5mm 3 Al heat sink.
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r
e t e m a r a P l o b m y S s
n o i t i d n o C s
g n i t a R t i n U e g a t l o v y l p p u s m u m i x a M V C C x
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W e r u t a r e p m e t g n i t a r e p O r p o T 57+o t 02–e
r u t a r e p m e t e g a r o t S g
t s T 0
51+o t 04–r
e t e m a r a P l o b m y S s
n o i t i d n o C s
g n i t a R t i n U e g a t l o v y l p p u s d e d n e m m o c e R V C C 2.31V e
c n a t s i s e r
d a o l d
e d n e m m o c e R R L
4
?
* : 100×100×1.5mm 3 Al heat sink used.
r
e t e m a r a P l o b m y S s
n o i t i d n o C s
g n i t a R t i n U n
i m p y t x a m t n e r r u c t n e c s e i u Q I O C C 5308A m n i a g e g a t l o V G V p
o o l d e s o l C 1
5355
5B d t i u c r i c d e i f i c e p s n o d e s a b p o o l n e p O 07B d r
e w o p t u p t u O P O 1R ,%01=D H T L 4=?0.58.5W P O 2
R ,%01=D H T L 2=?
.9W
Proper Cares in Using IC
Maximum ratings
Extreme caution should be excrcised when using the IC in the vicinity of the maximum ratings as a slight factor may cause the maximum ratings to be exceeded, thereby leading to a breakdown accident.
Pin-to-pin short
If the power supply is truned ON with pin-to-pin short, a breakdown or de-gradation may occur. When installing the IC on the board, be sure to check that pin-to-pin area is not shorted with solder, etc. and turn ON the power supply.
Printed Circuit Board
When designing the printed circuit board, make the power supply and ground lines thicker and shorter so that no feedback loop of input/output is formed. When using under the condition where the signal source impedance (Rg) is large, a stable operation against distortion is obtained by separating the input /output ground line at the root of GND pin [pin (8)]. The heat sink fin must be reliably connected to the external line of the same potential as pin (8) (GND).
The ripple rejection is also lowered. It is possible, however, to make the starting time earlier at the time of the power supply switch ON. If C
(b) Bootstrap capacitor C
The low cutoff frequency may be somewhat influenced, but the drive at a low frequency is more influenced. If C made smaller, power at a low frequency may be reduced. Therefore, C
(c) Output capacitor C
The low cutoff frequency may be somewhat influenced, but the most influence is that power is reduced as the imped-ance at a low frequency is increased. Therefore, C
required.
Output wave form (pop noise) influenced by C D/V CC=13.2V, R L=4?, f=1kHz, V O=1V
(1) C NF==100μF, perfect discharge(2) C NF=100μF, C D=100μF
Sample Application Circuit 2. 18W typ. (V CC=13.2V, R L=4?) BTL amplifier
Sample Application Circuit 3. Pre-power amplifier for car stereo (4.75cm/s. cassette).