SANYO STK403-430, STK403-440, STK403-450 Diagram

Ordering number : ENN7374

D2503TN (OT) No. 7374-1/8

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

SANYO: SIP28

[STK403-430]

STK403-430

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Six-Channel Class AB Audio Power Amplifier IC

20 W

× 6 Channels

Thick-Film Hybrid IC

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.

No. 7374-2/8

STK403-430

Item

Type No.

STK403-430 STK403-440 STK403-450
Output 1 (10%/1 kHz) 30 W × 6 ch 40 W × 6 ch 45 W × 6 ch
Output 2 (0.6%/20 Hz to 20 kHz)

20 W × 6 ch 25 W × 6 ch 30 W × 6 ch
Maximum supply voltage (No signal) ±36 V ±38 V ±40 V
Maximum supply voltage (6 Ω) ±34 V ±36 V ±38 V
Recommended supply voltage (6 Ω) ±23 V ±26 V ±28 V

Package 78.0 mm × 32.0 mm × 9.0 mm

Series Organization

Specifications

Maximum Ratings at Ta = 25°C

These products are organized as a series based on their output capacity.

Operating Characteristics at Tc = 25°C, RL= 6 Ω (noninductive load), Rg = 600 Ω, VG = 30 dB

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-V

CC

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 V

BE

(about 0.6 V) is applied to the standby pin.

4700µF

4700µF

DBA30C

500Ω

500Ω

+V

CC

--V

CC

+

+

Designated Transformer Power Supply (RP-25 equivalent)

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage (No signal) V

CC

max(0) ±36 V

Maximum supply voltage V

CC

max(1) RL≥ 6 Ω ±34 V

Minimum operating supply voltage V

CC

min ±10 V

Maximum operation flow-in current (pin 23)

I

ST OFF

max 1.2 mA
Thermal resistance θ j-c Per power transistor 3.6 °C/W
Junction temperature Tj max

Both the Tj max and the Tc max conditions must be met.

150 °C
Operating IC substrate temperature Tc max 125 °C
Storage temperature Tstg –30 to +125 °C
Allowable load shorted time *

4

ts VCC= ±23.0 V, RL= 6 Ω, f = 50 Hz, PO= 20 W, 1ch drive 0.3 s

Parameter Symbol

Conditions*

1

Ratings

Unit

V

CC

(V) f (Hz) PO(W) THD (%) min typ max

P

O

(1) ±23.0 20 to 20 k 0.6 18 20

Output power *

1

PO(2) ±23.0 1 k 10 30

W

THD (1) ±23.0 20 to 20 k 5.0 VG = 30 dB 0.6

Total harmonic distortion *

1

THD (2) ±23.0 1 k 5.0 VG = 30 dB 0.03

%

Frequency characteristics f

L

, f

H

±23.0 1.0 +0 –3 dB

20 to 50 k

Hz
Input impedance ri ±23.0 1 k 1.0 55 kΩ
Output noise voltage *

2

V

NO

±28.0 Rg = 2.2 kΩ 1.0 mVrms

Quiescent current I

CCO

±28.0 No loading 60 110 180 mA

Neutral voltage V

N

±28.0 –70 0 +70 mV

Current flowing into pin 23

I

ST ON

±23.0

V23= 5 V, current Limiting

0 mA

in standby mode *

6

resistance: 6.2 kΩ

Current flowing into pin 23

I

ST OFF

±23.0 0.4 1.2 mA

in operating mode *

6

No. 7374-3/8

STK403-430

Internal Equivalent Circuit

11

5 6 7 8

9

23

19

18

2

3

4

1

10

12

13

16

15

Pre Driver IC

(CH2 / CH3)

Pre Driver IC

(CH1)

Bias Circuit

24 25 26 27

28

Pre Driver IC

(CH5 / CH6)

22

21

20

17

14

Pre Driver IC

(CH4)

ITF02247

C13

TR7

TR8

TR17

SUB

TR16

C16

C12

TR4

TR5

C15

TR13

TR14

C11

TR1

TR2

C14

TR10

TR11

TR9

R24

R25

TR6

R22

R23

TR3

R20

R21

R5

R6

R3

R4

R1

R2

TR12

R27

R26

TR15

R29

R28

TR18

R31

R30

R8

R7

R10

R9

R12

R11

C3C2

C1

C4

C5 C6