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PDF KIA6248K Data sheet ( Hoja de datos )
| Número de pieza | KIA6248K | |
| Descripción | 7.3W DUAL AUDIO POWER IC | |
| Fabricantes | KEC | |
| Logotipo |  |
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SEMICONDUCTOR
TECHNICAL DATA
KIA6248K
BIPOLAR LINEAR INTEGRATED CIRCUIT
7.3W DUAL AUDIO POWER IC
The KIA6248K is dual audio power amplifier
for application.
It contains various kind of protectors and the
function of stand-by switch.
FEATURES
* Output Power
: PouTd)=7.3W(Typ.)
(Vcc=13.2V, R l = 2 Q , f=lkHz, THD=10%)
: PouT(2)=6.4W(Typ.)
(VCc=14.4V, RL=4£, f=lkHz, THD=10%)
: PouT(3)=5.3W(Typ.)
(VCc=13.2V, RL=4£, f=lkHz, THD=10%)
* Total Harmonic Distortion
: THD=0.1%(Typ.)
(VCc=13.2V, RL=4£, f=lkHz, P 0 U T = 1 W )
* Built-in Stand-by Switch Function
: ISTBY=l//A(Typ.)
(With (9) pin set at High, power is turned ON.)
* Built-in Various Protection Circuits
: OVER Voltage, Thermal Shut Down
Out to GND, out to Vcc Short
* Built-in Junction Temperature Detection Function
(Pin ® : 10mW/°C)
* Operation supply voltage range : V c c = 6 ~ 1 8 V .
DIM
A
B
C
D
d
HI
H2
L
P
Q
s
T
MILLIMETERS
30.0± 0.2
3.0±0.3
15.7± 0.2
o.ato.i
0.6± 0.1
14.5± 0.3
17.7± 0.3
3.5± 0.3
2.0
3.7± 0.2
15.0± 0.2
0.6+0.1/—0.05
HSIP-15
1999. 2. 1
Revision No : 1
KEC
1/8
1 page  
KIA6248K
CAUTION AND APPLICATION METHOD
(Description is made only on the single channel.)
1. Voltage Gain Adjustment
The closed loop voltage gain (Gv) is determined by
Ri, R2 and Rf.
G v = 201og
Rf + Ri + Rz
Rf + Ri
(dB)
When Rf=0, Gv=52dB(Typ.) is given.
The voltage gain is reduced when Rf is increased.
(Fig.2)
With the voltage gain reduced, since the oscillation
stability is reduced, refer to the items 3.
(Fig.l)
*PQ 50
O> —N
45
<O
awo< 40
o> 35
•N
s
*—
2. Stand-by SW Function
By means of controlling pin© (Stand-by terminal) to
high and low, the power supply can be set to ON and
O F F . The threshold voltage of pin© is set at 2.1V(3VBE),
and the power supply current is about l//A(Typ.) at the
stand-by state.
100 200 300 400 500 600 700
FEEDBACK RESISTACNE % (Q)
(Fig.2)
to bias cutting
circuit
Control Voltage pin© : V(SB)
Stand-by
ON
Power
OFF
V(SB) (V)
0~2
OFF
ON 3—Vcc
(Fig.3) With pin ® set to High,
* •,
r r^
t i nTTr
Power is turned ON
Advantage of Stand-by SW
(1) Since Vcc can directly be controlled to ON, OFF by the microcomputer, the switching relay can be
omitted.
(2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory
for switching.
Large current cpapcity switch
BATTERY
RELAY
- BATTERY
FROM
MICROCOMPUTER
- Conventional Method -
Small current capacity switch
BATTERY
Stand-by V^c
DIRECTLY FROM
MICROCOMPUTER
BATTERY
Stand-by Vcc
Stand-by Switch Method
1999. 2. 1
Revision No : 1
l/Cr
5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet KIA6248K.PDF ] | |
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