Ordering number : ENN7374
Thick-Film Hybrid IC
STK403-430
Six-Channel Class AB Audio Power Amplifier IC
20 W × 6 Channels
Overview
The STK403-400 series products are audio power amplifier hybrid ICs that consist of optimally-designed discrete component power amplifier circuits that have been miniaturized using SANYO's unique insulated metal substrate technology (IMST). The adoption of a newlydeveloped low thermal resistance substrate allows this product to integrate six power amplifier channels in a single compact package. The adoption of a standby circuit in this device allows it to reduce impulse noise significantly as compared to earlier Sanyo products, in particular, the STK402-*00 series products.
Features
•Series of pin compatible power amplifiers ranging from 30 W/ch to 45 W/ch (10%/1 kHz) devices. The same printed circuit board can be used depending on the output power grade.
•Miniature packages
—78.0 mm × 32.0 mm × 9.0 mm *
*: Not including the pins.
•Output load impedance: RL = 6 Ω
•Allowable load shorted time: 0.3 seconds
•Supports the use of standby and muting circuits.
Package Dimensions
unit: mm
4202-SIP28
[STK403-430]
SANYO: SIP28
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
D2503TN (OT) No. 7374-1/8
STK403-430
Series Organization
These products are organized as a series based on their output capacity.
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Type No. |
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STK403-430 |
STK403-440 |
STK403-450 |
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Output 1 (10%/1 kHz) |
30 W × 6 ch |
40 W × 6 ch |
45 W × 6 ch |
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Output 2 (0.6%/20 Hz to 20 kHz) |
20 W × 6 ch |
25 W × 6 ch |
30 W × 6 ch |
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Maximum supply voltage (No signal) |
±36 V |
±38 V |
±40 V |
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Maximum supply voltage (6 Ω ) |
±34 V |
±36 V |
±38 V |
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Recommended supply voltage (6 Ω ) |
±23 V |
±26 V |
±28 V |
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Package |
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78.0 mm × 32.0 mm × 9.0 mm |
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Specifications
Maximum Ratings at Ta = 25°C
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Symbol |
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Conditions |
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Ratings |
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Unit |
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Maximum supply voltage (No signal) |
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VCC max(0) |
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±36 |
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V |
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Maximum supply voltage |
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VCC max(1) |
RL ≥ 6 Ω |
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±34 |
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V |
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Minimum operating supply voltage |
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VCC min |
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±10 |
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V |
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Maximum operation flow-in current (pin 23) |
IST OFF max |
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1.2 |
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mA |
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Thermal resistance |
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θ j -c |
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Per power transistor |
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3.6 |
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°C/W |
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Junction temperature |
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Tj max |
Both the Tj max and the Tc max conditions must be met. |
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150 |
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°C |
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Operating IC substrate temperature |
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Tc max |
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125 |
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°C |
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Storage temperature |
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Tstg |
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–30 to +125 |
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°C |
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Allowable load shorted time *4 |
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ts |
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VCC = ±23.0 V, RL = 6 Ω , f = 50 Hz, PO = 20 W, 1ch drive |
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0.3 |
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s |
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Operating Characteristics at Tc = 25°C, RL = 6 Ω (noninductive load), Rg = 600 Ω , VG = 30 dB |
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Parameter |
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Symbol |
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Conditions*1 |
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Ratings |
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Unit |
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VCC (V) |
f (Hz) |
PO (W) |
THD (%) |
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min |
typ |
max |
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Output power *1 |
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PO (1) |
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±23.0 |
20 to 20 k |
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0.6 |
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18 |
20 |
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W |
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PO (2) |
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±23.0 |
1 k |
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10 |
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30 |
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Total harmonic distortion *1 |
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THD (1) |
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±23.0 |
20 to 20 k |
5.0 |
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VG = 30 dB |
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0.6 |
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% |
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THD (2) |
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±23.0 |
1 k |
5.0 |
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VG = 30 dB |
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0.03 |
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Frequency characteristics |
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fL, fH |
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±23.0 |
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1.0 |
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+0 –3 dB |
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20 to 50 k |
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Hz |
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Input impedance |
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ri |
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±23.0 |
1 k |
1.0 |
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55 |
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kΩ |
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Output noise voltage *2 |
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VNO |
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±28.0 |
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Rg = 2.2 kΩ |
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1.0 |
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mVrms |
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Quiescent current |
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ICCO |
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±28.0 |
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No loading |
60 |
110 |
180 |
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mA |
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Neutral voltage |
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VN |
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±28.0 |
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–70 |
0 |
+70 |
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mV |
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Current flowing into pin 23 |
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IST ON |
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±23.0 |
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V23 = 5 V, current Limiting |
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0 |
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mA |
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in standby mode *6 |
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resistance: 6.2 kΩ |
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Current flowing into pin 23 |
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IST OFF |
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±23.0 |
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0.4 |
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1.2 |
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mA |
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in operating mode *6 |
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Notes: 1. 1ch drive
2.Unless otherwise noted, use a constant-voltage supply for the power supply used during inspection.
3.Use the transformer power supply circuit shown in the figure below for allowable load shorted time measurement and output noise voltage measurement.
4.The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50 Hz) power supply should be used to minimize the influence of AC primary side flicker noise on the reading.
5.Design applications so that the minus pre-VCC line (pin 17) is the lowest potential applied to the IC at all times.
6.A limiting resistor that assures that the maximum operating current flowing into the standby pin (pin 23) does not exceed the maximum rating must be included in application circuits. This IC operates when a voltage higher than VBE (about 0.6 V) is applied to the standby pin.
DBA30C 4700µF
+VCC
+
500Ω
+ 
500Ω
--VCC
4700µF
Designated Transformer Power Supply (RP-25 equivalent)
No. 7374-2/8
TRTR
3/8-7374 .No
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Internal |
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5 |
6 |
7 |
8 |
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Equivalent |
11 |
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2 |
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C11 |
C12 |
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C13 |
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TR1 |
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TR7 |
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Circuit |
3 |
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R1 |
R20 |
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R22 |
R3 |
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R5 |
R24 |
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Pre Driver IC |
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Pre Driver IC |
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4 |
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TR3 |
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TR6 |
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TR9 |
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9 |
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(CH1) |
R2 |
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R4 |
(CH2 / CH3) |
R6 |
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R21 |
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R23 |
R25 |
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TR2 |
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TR8 |
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C1 |
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14 |
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C2 |
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C3 |
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1 |
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13 |
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R |
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10 |
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Bias Circuit |
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23 |
-STK403 |
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12 |
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19 |
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13 |
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16 |
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18 |
430 |
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15 |
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SUB |
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C4 |
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C5 |
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C6 |
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TR11 |
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TR17 |
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T |
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20 |
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R |
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21 |
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R27 |
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22 |
Pre Driver IC |
R8 |
R29 |
R10 |
Pre Driver IC |
R12 |
R31 |
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28 |
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TR12 |
TR15 |
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TR18 |
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(CH4) |
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(CH5 / CH6) |
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R7 |
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R9 |
R11 |
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R26 |
R28 |
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R30 |
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17 |
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TR10 |
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TR16 |
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T |
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C14 |
C15 |
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C16 |
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14 |
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24 |
25 |
26 |
27 |
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ITF02247 |
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45
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