KODENSHI KKA7056

TECHNICAL DATA
3 W Mono BTL Audio Output Amplifier
FEATURES
· No external components
· No switch-on/off clicks
· Good overall stability
· Low power consumption
· Short circuit proof
· ESD protected on all pins.
GENERAL DESCRIPTION
The KKA7056SH is a mono output amplifier contained in a
9 pin SIL medium power package (SOT110).
The device is designed for battery-fed portable mono
recorders, radios and television.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
supply voltage
Vp
CONDITIONS
Po
output power
Vp=11 V, THD=10,
RL=16 >
Gv
internal voltage gain
Ip
total quiescent current
Vp=11 V; RL=
THD
total harmonic distortion
Po=0,5 W
MIN.
3
TYP.
11
MAX.
18
UNIT
V
2.5
3
39
40,0
42
dB
5
7
mA
0,25
1
%
W
1
KKA7056
PIN
1
2
3
4
5
6
7
8
9
DESCRIPTION
n.c.
VP
input(+)
signal ground
n.c.
output(+)
power ground
output(-)
n.c.
FUNCTIONAL DESCRIPTION
The KKA7056SH is a mono output amplifier, designed for battery-fed portable radios and mains-fed equipment such as
television. For space reasons there is a trend to decrease the number of external components. For portable applications
there is also a trend to decrease the number of battery cells, but still a reasonable output power is required.
The KKA7056SH fulfills both of these requirements. It needs no peripheral components, because it makes use of the
Bridge-Tied-Load (BTL) principle. Consequently it has, at the same supply voltage, a higher output power compared to a
conventional Single Ended output stage. It delivers an output power of 1 W into a loudspeaker load of 8 W with 6 V
supply or 3 W into 16 W loudspeaker at 11 V without need of an external heatsink. The gain is internally fixed at 40 dB.
Special attention is given to switch-on/off click suppression, and it has a good overall stability. The load can be short
circuited at all input conditions.
SYMBOL
Vp
PARAMETER
supply voltage
iorm
CONDITIONS
MIN.
-
MAX.
18
UNIT
V
Peak output current repetitive
-
1
A
iosm
Peak output current non-repetitive
-
1.5
A
Tstg
storage temperature range
-55
150
°C
Tj
junction temperature
-
150
°C
-
9
1
W
hr
Plot
total power dissipation
T^se < 60 •••C
Tsc
short circuiting time
see note 1
Note
1. The load can be short-circuited at all input conditions.
SYMBOL
hibk
Rtll.a
PARAMETER
from junction to case
from junction to ambient in free air
NOM.
10
55
UNIT
K/W
K/W
POWER DISSIPATION
Assume: VP = 11 V; RL = 16 W.
The maximum sine-wave dissipation is 1.52 W.
The Rth j-a of the package is 55 K/W.
Tamb max = 150 - 55 ´ 1.52 = 66.4 °C.
2
KKA7056
CHARACTERISTICS
SYMBOL
PARAMETER
Vp
operating supply voltage
IQRM
repetitive peak output current
CONDITIONS
MIN.
3
-
TYP.
11
-
MAX.
18
0.6
UNIT
V
A
2.5
-
5
3
0.25
7
1
mA
W
39
40.5
42
dB
300
-
uV
[JV
Hz
200
-
dB
mV
kii
300
nA
THD
total quiescent current
output power
total harmonic distortion
GV
voltage gain
Vno
Vno
noise output voltage
noise output voltage
frequency response
note 2
note 3
-
RR
AV
IZJ
ripple rejection
DC-output offset voltage
input impedance
note 4
note 5
36
-
180
60
20 to
20.000
50
100
1,
input bias current
-
100
IP
PO
THD= 10%
Po = 0.5 W
Notes to the characteristics
1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being
equal to the DC output offset voltage divided by RL .
2. The noise output voltage (RMS value) is measured with RS = 5 kW unweighted (20 Hz to 20 kHz).
3. The noise output voltage (RMS value) at f = 500 kHz is measured with RS = 0 W and bandwidth = 5 kHz. With a
practical load (RL = 16 W, LL = 200 mH) the noise output current is only 50 nA.
4. The ripple rejection is measured with RS = 0 W and f = 100 Hz to 10 kHz. The ripple voltage (200 mV) is applied to the
positive supply rail.
5. RS = 5 kW.
• 9-Pin Plastic Power Single-in-Line (SIL-9MPF, SOT 110-1)
21.8-0.21
15 0.09
1.65 0.03
3.3+0.075
6.35 0.15
4.3 0.06
5.8 0.06
3 min
Key
1.2 0.125
1 max
1.2 0.125
0.7 max
18.5 max
8.7-0.15
2.6+0.06
9 pins 0.67-0.14
R 0.125 M
0.45-0.1
3