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PDF LA4302T Data sheet ( Hoja de datos )
| Número de pieza | LA4302T | |
| Descripción | 8.5 W x 1 BTL or 4 W x 2 (SE) Audio Frequency Power Amplifier | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Ordering number : ENN7462
Monolithic Linear IC
LA4302T
8.5 W × 1 BTL or 4 W × 2 (SE) Audio Frequency
Power Amplifier for Desktop PCs
Overview
The LA4302T is a power amplifier IC that is designed for
desktop PCs and applications that use a 4-layer (copper
foil) circuit board. It is provided in an ultraminiature
package (TSSOP20J) that includes heat dissipation pad.
This IC supports both single-channel high-power (BTL)
operation and single ended (SE) stereo operation. These
operating modes are controlled with an electronic switch.
This product also supports the use of a common circuit
board in multiple products.
Features
• Ultraminiature package (TSSOP20J): Can be surface
mounted on a 4-layer circuit board and requires no heat
sink.
• PO = 8.5 W × 1 channel (VCC = 12 V, RL = 8 Ω, THD
= 10%: BTL operation)
• PO = 4 W × 2 channels (VCC = 12 V, RL = 4 Ω, THD =
10%: SE operation)
• Built-in electronic switch for switching between BTL
and SE operation
• Full complement of built-in protection circuits,
including circuits that protect against shorting to the
power supply, shorting to ground, load shorting, and
overheating)
[LA4302T]
TOP VIEW
6.5
20 11
BOTTOM VIEW
1
0.65
(0.33)
10
0.22
SIDE VIEW
0.15 Exposed Die-Pad
SANYO: TSSOP20J (225 mil)
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
91603TN (OT) No. 7462-1/11
1 page  
LA4302T
Figure 3 Standard SE (Single Ended) Usage Example
IN 2
Power GND
(heatsink)
20
-+
C5
0.1 µF
C2
0.22 µF
STBY/
Not Mute
used
IN 2
VCC
19 18 17 16 15
*6
NC
14
Input amp 2
Output amp 2
SE
+ C4
- 1000 µF
OUT2
(-OUT)
13 12
11
Power
GND
(heat
sink)
BTL
Input amp 1
Output amp 1
VCC
(12V)
C7
1000 µF
+-
+
-
*4
RL2
4Ω
*5
0.047 µF
+
4.7 Ω
Power
GND
BTL/SE
SW
SE
filter
(heat
sink)
1 2 3 4 5 6 7 8 9 10
Power GND NC
(heatsink)
-+
IN 1
+
Signal -
GND
OUT1
(+OUT)
C6
1000 µF
+-
C1
0.22 µF
Ripple
filter
VCC
(12V)
*5
0.047 µF
+
4.7 Ω
+ *4
RL1
- 4Ω
Notes
4. The speakers must both be connected with the plus (+) side closest to the IC.
5. Oscillations may appear in the output waveform under conditions that depend on the IC operating conditions and the
connected load. If this problem occurs, the oscillation stability can be improved by inserting 0.047 µF capacitors (use
capacitors with a low variation in capacitance with temperature) and 4.7 Ω resistors in series in the two positions
shown in dotted lines in figure 3. Verify the quality of the output waveform in an actual end product.
6. Pin 19 must not be connected to any signal; it must be left open. (This is because it is connected inside the chip.)
No. 7462-5/11
5 Page 
LA4302T
SVRR -- VCC
[SE]
80
VCCR = 0 dBm
70 fR = 100 Hz
Rg = 0 Ω
60 RL = 8 Ω
CVCC = 1 µF
50
40
30
20
10
0
8 9 10 11 12 13 14 15 16 17 18
Supply voltage, VCC — V
ILA01042
SVRR -- VCCR
[SE]
80
VCC = 12 V
70 fR = 100 Hz
Rg = 0 Ω
60 RL = 8 Ω
SVRR = 20log (VO / VCCR) CVCC = 1 µF
50
40
30
20
10
0
0 0.5 1.0 1.5 2.0
Power supply ripple voltage, VCCR — V rms ILA01044
SVRR -- fR
[SE]
80
VCC = 12 V
70 VCCR = 0 dBm
Rg = 0 Ω
60 RL = 8 Ω
CVCC = 1 µF
50
40
30
20
10
0
10 2 3 5 7100 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7100k
Ripple frequency, fR — Hz
ILA01043
Pd -- PO
[SE]
6
VCC = 12 V
f = 1 kHz
5 RL = 4 Ω
4
3
2
1
Pd = VCC × ICC – 2PO
0
0.1
23
5 7 1.0
23
5 7 10
Output power, PO — W
ILA01045
Specifications of any and all SANYO 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 equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of September, 2003. Specifications and information herein are
subject to change without notice.
PS No. 7462-11/11
11 Page | ||
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| PDF Descargar | [ Datasheet LA4302T.PDF ] | |
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