|
|
PDF STK404-120S Data sheet ( Hoja de datos )
| Número de pieza | STK404-120S | |
| Descripción | One-Channel Class AB Audio Power Amplifier IC | |
| Fabricantes | Sanyo | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de STK404-120S (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
|
No Preview Available !
Ordering number : EN7733
STK404-120S
Thick-Film Hybrid IC
One-Channel Class AB
Audio Power Amplifier IC 80W
Overview
The STK404-000S 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 newly-developed low thermal resistance substrate allows this series of devices to
be provided in miniature packages significantly more compact than earlier SANYO products with similar specifications.
Features
• Series of pin compatible power amplifiers ranging from 45W to 180W (10%/1kHz) devices. The same printed circuit
board can be used depending on the output power grade.
• Miniature packages
- 30W to 40W (THD=0.4%, f=20Hz to 20kHz); 44.0mm × 25.6mm × 8.5mm *
- 50W to 80W (THD=0.4%, f=20Hz to 20kHz); 46.6mm × 25.5mm × 8.5mm *
- 100W to 120W (THD=0.4%, f=20Hz to 20kHz); 59.2mm × 25.5mm × 8.5mm *
*: Not including the pins.
• Output load impedance: RL=6Ω
• Allowable load shorted time: 0.3 seconds
• Built-in thermal protection circuit
• Supports the use of standby, muting, and load shorting protection circuits.
Series Organization
These products are organized as a series based on their output capacity.
Item
Type No.
STK404-050S STK404-070S STK404-090S STK404-100S STK404-120S STK404-130S STK404-140S
Output 1 (0.4%/20Hz to 20kHz)
30W
40W
50W
60W
80W
100W
120W
Output 2 (10%/1kHz)
45W
60W
80W
90W
120W
150W
180W
Maximum supply voltage (6Ω)
±37V
±43V
±46V
±51V
±59V
±64V
±73V
Recommended supply voltage (6Ω)
±26V
±30V
±32V
±35V
±41V
±45V
±51V
Remarks
- Built-in thermal protection circuit
Package
44.0mm × 25.6mm × 8.5mm
46.6mm × 25.5mm × 8.5mm
59.2mm × 25.5mm × 8.5mm
D1505HKIM 5-6764 No.7733-1/6
1 page  
STK404-120S
Thermal Design Example
If we define Pd, the total power dissipation on the board when this hybrid IC is in operation, the heat sink thermal
resistance, θc-a, is determined as follows:
Condition 1: The hybrid IC substrate temperature Tc must not exceed 125°C.
Pd × θc-a + Ta < 125°C·································································· (1)
Ta: Guaranteed ambient temperature for the end product.
Condition 2: The junction temperature Tj of each transistor must not exceed 150°C.
Pd × θc-a + Pd/N × θj-c + Ta < 150°C············································ (2)
N: Number of power transistors
θj-c: Thermal resistance per power transistor
We take the power dissipation in the power transistors to be Pd evenly distributed across
those N power transistors.
If we solve for θc-a in equations (1) and (2), we get the following inequalities:
θc-a < (125 – Ta)/Pd ······································································ (3)
θc-a < (150 – Ta)/Pd – θj-c/N························································· (4)
The value that satisfies both of these inequalities at the same time is the required heat sink thermal resistance value.
Example:
For actual music signals, it is usual to use a Pd of 1/8 of PO max, which is the power estimated for continuous signals in
this manner. (Note that depending on the particular safety standard used, a value somewhat different from the value of
1/8 used here may be used.)
When VCC = ±41V and RL = 6Ω, we get the following expression for the total power dissipation on the board, Pd:
Pd = 38W (when 1/8 PO max is 10.0W)········································· (5)
The number, N, of power transistors in the hybrid IC’s audio amplifier block is 2. Since the thermal resistance, θj-c, per
transistor is 1.9°C/W, the required heat sink thermal resistance, θc-a, for a guaranteed ambient temperature Ta of 50°C
will be as follows:
From inequality (3): θc-a < (125 – 50)/38=1.97······························ (6)
From inequality (4): θc-a < (150 – 50)/38 – 1.9/2=1.68·················· (7)
Therefore, the thermal resistance that satisfies both of these expressions (6 and 7) at the same time is 1.68°C/W.
Note that this thermal design example assumes the use of a constant-voltage power supply, and is only provided as an
example for reference purposes. Thermal designs must be tested in an actual end product.
No.7733-5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet STK404-120S.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| STK404-120N-E | 1ch class-AB Audio Power IC |  ON Semiconductor |
| STK404-120S | One-Channel Class AB Audio Power Amplifier IC | Sanyo |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |