LA4625 Datasheet PDF - Sanyo
| Part Number | LA4625 | |
| Description | Two-Channel 13.5 W BTL Audio Power Amplifier | |
| Manufacturers | Sanyo | |
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Ordering number : ENN6631
Monolithic Linear IC
LA4625
Two-Channel 13.5 W BTL Audio Power Amplifier
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.
Package Dimensions
unit: mm
3113A-SIP14HZ
[LA4625]
27.0
20.0
4.0
Note that this device is pin compatible with the 20 W × 2-
channel LA4628, and allows end products differentiated
by their power rating to share the same printed circuit
board.
Features
• Total output: 13.5 W + 13.5 W (at VCC = 12 V, RL = 4 Ω,
THD = 10%)
• PMPO reference data: 115 W × 2 (VCC = 20 V, RL = 4 Ω)
• High-fidelity design (fL < 10 Hz, fH = 130 kHz)
• 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)
1
1.94 0.5
3.56
1.78 3.56
14 0.4
1.6
2.2
SANYO: SIP14HZ
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
92900RM (OT) No. 6631-1/8
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LA4625
3. Impulse noise improvements
• While the LA4625 achieves a low level of impulse noise, if even further reductions in impulse noise at power on/off
(and when switching into or out of standby mode) a 0.47 µF capacitor may be inserted between pin 7 and the PRE
GND pin (pin 3). (Pin 7 is the output amplifier bias pin. Since the ability to withstand shorting the output pins to
VCC or ground is reduced for supply voltages over 16 V if the pin 7 capacitance is large, we recommend a value of
0.47 µF or lower for this capacitor.)
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)
GND
VCC
C5
+
14
GND
R2 C6
R3 C7
--OUT1
+OUT1
GND
R4 C8
R5 C9
--OUT2
+OUT2
1
LA4625
C1
+
+
C2
IN1
STB
R1
C3
+
+
IN2
C4
+
C10
ILA00349
No. 6631-5/8
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for LA4625 electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ LA4625.PDF Datasheet ] | |
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