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PDF LA4625 Data sheet ( Hoja de datos )
| Número de pieza | LA4625 | |
| Descripción | 2-channel 13.5W BTL Audio Power Amplifier | |
| Fabricantes | ON Semiconductor | |
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Hay una vista previa y un enlace de descarga de LA4625 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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Ordering number : EN6631A
LA4625
Monolithic Linear IC
2-channel 13.5W BTL Audio Power
Amplifier
http://onsemi.com
Overview
The LA4625 is a 2-channel general-purpose BTL audio power amplifier provided in a miniature package. It was
designed for the best possible audio quality and features an extended low band roll-off frequency provided by a
newly-developed NF circuit that does not require an external capacitor. Furthermore, crosstalk, which can cause
muddiness in the audio output, has been significantly reduced by both circuit and wiring pattern improvements. Thus
this amplifier can provide powerful lows and clear highs.
Note that this device is pin compatible with the 20W×2-channel LA4628, and allows end products differentiated by
their power rating to share the same printed circuit board.
Features
• Total output : 13.5W+13.5W (at VCC = 12V, RL = 4Ω, THD = 10%)
• PMPO reference data : 115W×2 (VCC = 20V, RL = 4Ω)
• High-fidelity design (fL < 10Hz, fH = 130kHz)
• Extremely low impulse noise levels
• An arbitrary amplifier startup time can be set up with external components.
• Full complement of built-in protection circuits (includes circuits that protect against shorting to VCC, shorting to
ground, load shorting, overvoltages and excessive temperatures)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Maximum output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
IO peak
Pd max
Topr
Tstg
Conditions
No signal
Per channel
With an arbitrarily large heat sink
Ratings
24
3.5
32.5
-20 to +85
-40 to +150
Unit
V
A
W
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
O0808 MS JK/92900RM (OT) No.6631-1/8
1 page  
LA4625
4. Protection circuits
• Due to the system structure of the protection circuit for shorts to VCC or ground, if there is a DC resistance
between the amplifier output pins and ground, the protection circuit may operate when power is first applied and
the amplifier may fail to turn on. The basic design approach we recommend is not to adopt any designs in which
there is a DC resistance between the amplifier outputs and ground.
• The LA4625 includes a built-in thermal protection circuit to prevent the IC from being damaged or destroyed if
abnormally high temperatures occur. This thermal protection circuit gradually reduces the output if the IC
junction temperature (Tj) reaches the range 170 to 180°C due to inadequate heat sinking or other problem. If the
temperature falls, the amplifier will restart automatically.
• The LA4625 also includes other protection circuits. Use of these circuits also requires care during end product
design and testing.
5. Other notes
• The LA4625 is a BTL power amplifier. When testing this device, the ground systems for the test equipment
connected to IC inputs, and that for the test equipment connected to IC outputs, must be isolated. Do not use a
common ground.
Printed Circuit Pattern
(copper foil side)
No.6631-5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LA4625.PDF ] | |
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