power IC. STK433-270-E Datasheet
Ordering number : EN*A1632
Thick-Film Hybrid IC
3-channel class AB audio power IC,
The STK433-270-E is a hybrid IC designed to be used in 60W × 3ch class AB audio power amplifiers.
• Audio power amplifiers.
• Pin-to-pin compatible outputs ranging from 40W to 60W.
• Can be used to replace the STK433-000/-100 series (30W to 150W × 2ch) and STK433-300 series (80W to 150W × 3ch)
due to its pin compatibility.
• Miniature package (67.0mm × 25.6mm × 9.0mm)
• Output load impedance: RL = 6Ω to 4Ω supported
• Allowable load shorted time: 0.3 second
• Allows the use of predesigned applications for standby and mute circuits.
Output 1 (10%/1kHz)
Output 2 (0.6%/20Hz to 20kHz)
Maximum rating VCC max (quiescent)
Maximum rating VCC max (6Ω)
Maximum rating VCC max (4Ω)
Recommended operating VCC (6Ω)
Dimensions (excluding pin height)
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
51910HKIM No. A1632-1/10
Absolute Maximum Ratings at Ta = 25°C (excluding rated temperature items), Tc=25°C unless otherwise specified
Maximum power supply voltage 0
Maximum power supply voltage 1
Maximum power supply voltage 2
Minimum operating supply voltage
Pin 13 input voltage
Operating substrate temperature
Available time for load short-circuit *4
VCC max (0)
VCC max (1)
VCC max (2)
Per power transistor
Both the Tj max and Tc max conditions must be met.
VCC=±29V, RL=6Ω, f=50Hz, PO=40W,
-0.3 to +5.5
-30 to +125
Operating Characteristics at Tc=25°C, RL=6Ω, Rg=600Ω, VG=30dB, non-inductive load RL, unless otherwise
(V) (Hz) (W) (%)
*1 PO (1)
±29 20 to 20k
Total harmonic distortion *1
±29 20 to 20k
Frequency characteristics *1 fL, fH
20 to 50k
ri ±29 1k 1.0
Output noise voltage
Output neutral voltage VN ±35
-70 0 +70 mV
Pin 13 voltage when standby VST ON
0 0.6 V
Pin 13 voltage when standby VST OFF
*1: For 1-channel operation
*2: Unless otherwise specified, use a constant-voltage power supply to supply power when inspections are carried out.
*3: The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50Hz)
power supply should be used to minimize the influence of AC primary side flicker noise on the reading.
*4: Use the transformer power supply circuit shown in the figure below for allowable load shorted time and output
noise voltage measurement.
*5: Please connect -PreVCC pin (#1 pin)with the stable minimum voltage, and connect so that current does not flow in
by reverse bias.
*6: Thermal design must be implemented based on the conditions under which the customer’s end products are
expected to operate on the market.
*7: The impression voltage of ‘#13 (Stand-By) pin’ must not exceed the maximum rating.
Power amplifier operate by impressing voltage +2.5 to +5.5V to ‘#13 (Stand-By) pin’.
*8: A thermoplastic adhesive is used to adhere the case.
Designated transformer power supply
Internal Equivalent Circuit
54 6 7
14 15 16 17