SANYO STK4065 Datasheet
Ordering number: EN 2148C
°
θ
°
–
°
−
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2
Thick Film Hybrid IC
STK4065
Car Stereo Use Power Amplifier
(25W min, THD = 10%)
Applications
• Power amplifier for car stereos
• Home karaoke systems
Features
• High output power Maximum output power 40W or
greater (R
35W typ. (R
23W typ. (R
= 2 Ω )
L
= 2 Ω , THD = 10%)
L
= 4 Ω , THD = 10%)
L
• Low distortion
• Built-in protectors
• DC short protector
• Thermal shutdown protector (Thermal protector)
• Overvoltage protector (Overvoltage / power supply
surge protector)
• Audio muting circuit (Fast attack time)
• Free from failure caused by load short
• Wide operating supply voltage range
Specifications
Maximum Ratings
at Ta = 25 ° C
Package Dimensions
unit: mm
4081
[STK4065]
Parameter Symbol Conditions Ratings Unit
V
max(1) Quiescent (circuit cutoff mode) 30s 30 V
CC
Supply voltage
Allowable power dissipation Pd max Infinite heat sink 100 W
Peak output power Po max V
Output current I
Junction temperature Tj 150
Thermal resistance
Operating temperature Topr
Storage temperature Tstg
Available time for load shorted t
V
max(2)
CC
O
j-c 1.25
s
Recommended Operating Conditions
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
Load resistance R
CC
L
Operating (f = 100Hz, V
t = 100ms)
= 16V, RL = 2 Ω , f = 1kHz 65 W
CC
V
= ± 13.2V, R
CC
at Ta = 25 ° C
= 1Vrms,
IN
= 2 Ω , f = 50Hz, P
L
18 V
12 A
30 to +85
40 to +125
= 25W 2* s
O
13.2 V
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
61197HA (ID) / 80394TH (KOTO) / 1287KI / 4155KI, TS 5-2124 No. 2148—1/9
C
C/W
C
C
Ω
∆
−
– ∞ –
–
STK4065
Operating Characteristics
at Ta = 25 ° C, R
= 2 Ω , Rg = 600 Ω , VG = 46dB, V
L
= 13.2V
CC
Parameter Symbol Conditions min typ max Unit
Quiescent current I
Output power
Total harmonic distortion
CCO
P
(1) THD = 10%, f = 1kHz 25 35 – W
O
P
(2) THD = 1%, f = 1kHz – 25 – W
O
P
(3)
O
THD(1) P
THD(2) P
Voltage gain VG P
Frequency response f
Input impedance r
Output noise voltage V
Output offset voltage
, f
L
H
i
NO
V
N
Muting suppression level ATT V
Ripple rejection SVRR
Rg = 10k Ω
THD = 10%, R
f = 1kHz
= 10W, f = 1kHz – 0.06 0.1 %
O
= 1W, f = 20Hz to 20kHz – – 0.3 %
O
= 1W, f = 1kHz 43.8 46.0 48.2 dB
O
P
= 1W, – 10 to 30k – Hz
O
P
= 1W, f = 1kHz 20 30 – k Ω
O
= 4 Ω ,
L
+0
dB
−
3
– 70 140 mA
20 23 – W
Rg = 10k Ω , without BPF – 0.6 1.2 mVrms
Rg = 10k Ω
= +5V
M
f
= 100Hz, Rg = 0 Ω ,
R
V
= 0dBm
R
200 0 +200 mV
dB
–47 – dB
* It is guaranteed that load short causes no damage for 2 seconds. In actual applications, the thermal shutdown protector provides sufficient guarantee against load
short. However, refer to “Notes for Applying the STK4065”, because the saturation current varies with the thermal resistance of the heat sink.
Equivalent Circuit Block Diagram
No. 2148—2/9
Test Circuit
STK4065
Notes for Applying the STK4065
(1) V
(2) Protectors
a) Output pin-to-V
The STK4065 contains protectors against output pin-
The output pin-to-V
max
CC
The STK4065 is designed as an amplifier for car use
and its V
max at the operating mode is set to 18V.
CC
When this voltage is exceeded, the overvoltage protector will work to bring the circuit to OFF-state, delivering no output. The overvoltage protector is so designed
as to work at a voltage of 18V to 28V. The protector
works 100% at 28V. When designing an audio set, such
as home stereo, using a transformer power supply, consider AC line regulation and be careful that 18V must
not be exceeded at the quiescent mode. If 18V is
exceeded, the overvoltage protector will w ork, generating an abnormal sound.
short, output pin-to-GND short pro-
CC
tectors
to-V
short and output pin-to-GND short.
CC
short protector works effec-
CC
tively to protect the IC when the power switch is turned
ON at the output pin-to-V
work to protect the IC when output pin-to-V
short state, but does not
CC
short is
CC
forced to be provided at the normal operation mode
after the power switch is turned ON.
The output pin-to-V
short protector is intended to
CC
protect the IC against damage when pin-to-pin short
occurs in the assembly process.
If there is possibility that output pin-to-V
caused by the user, the auxiliary output pin-to-V
short is
CC
CC
short protector shown on page 5 must be connected
externally. The output pin-to-GND short protector
works effectively to protect the IC against damage
when the power switch is turned ON at the output Pinto-GND short state and also when output pin-to-GND
short is forced to be provided at the normal operation
mode after the power switch in turned ON.
b) Thermal shutdown
The STK4065 contains thermal protectors.
The thermal protector detects abnormal temperature
rise caused when the IC operates abnormally (load
short, etc.), limits the input signal, and prevents tem-
perature from rising, preventing the IC from breaking
down in a short time. The thermal protector starts
working at approximately 135 ° C of substrate tempera-
ture Tc and turns OFF the input signal at approxi-
mately 175 ° C.
No. 2148—3/9
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