LA47202P Datasheet PDF - Sanyo Semicon Device
| Part Number | LA47202P | |
| Description | Monolithic Linear IC Four-Channel BTL Power Amplifier | |
| Manufacturers | Sanyo Semicon Device | |
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Ordering number : ENA0508
LA47202P
Monolithic Linear IC
Four-Channel BTL Power
Amplifier for Car Audio Systems
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The LA47202P is a 4-channel BTL power amplifier IC developed for use in car audio applications. The LA47202P adopts
a pure complementary output stage circuit structure with a v-pnp transistor for the high side and an npn transistor for the
low side to provide both high output power and high quality sound.
The LA47202P integrates all the functions required for car audio applications on the same chip, including a standby switch,
a muting function, and a full complement of protection circuits. It also features a self diagnostics function.
Functions
• High output : PO max = 47W (typ.) (VCC = 14.4V, f = 1kHz, JEITA max, RL = 4Ω)
: PO max = 29W (typ.) (VCC = 14.4V, f = 1kHz, THD = 10%, RL = 4Ω)
: PO max = 22W (typ.) (VCC = 14.4V, f = 1kHz, THD = 1%, RL = 4Ω)
• Muting function incorporated (pin 22)
• Built-in standby switch (pin 4)
• Self diagnostics function incorporated (pin 25) :
Output of both output offset detection, shorting to VCC or ground and load shorting signals
• Electric mirror noise decrease
• Full compliment of protection circuits (shorting to VCC, shorting to ground, load shorting, overvoltage, and thermal
protection).
• Improved oscillation stability
Note 1 : Take care to avoid wrong connection. Otherwise, IC or equipment may suffer breakdown, damage, or deterioration.
Note 2 : The protective circuit function is to avoid the abnormal state (wrong connection of the output) temporarily and does
not guarantee that IC is not broken.
These protective functions do not operate outside the operation guarantee range, and wrong connection of output
may cause breakdown of IC.
Note 3 : External parts, such as the anti-oscillation part, diode to prevent breakdown, may become necessary depending on the
set condition. Check their necessity for each set.
Any and all SANYO Semiconductor 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 Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor 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 Semiconductor
products described or contained herein.
D2706 MS PC 20060809-S00002 No.A0508-1/8
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LA47202P
8. Oscillation stability
Pay due attention on the following points because parasitic oscillation may occur due to effects of the capacity load,
board layout, etc.
(1) Capacity load
When the capacitor is to be inserted between each output pin and GND so as to prevent electric mirror noise, select
the capacitance of maximum 1200pF. (Conditions : Our recommended board, RL = 4Ω)
(2) Board layout
• Provide the VCC capacitor of 0.1µF in the position nearest to IC.
• PREGND must be independently wired and connected to the GND point that is as stable as possible, such as the
minus pin of the 2200µF VCC capacitor.
In case of occurrence of parasitic oscillation, any one of following parts may be added as a countermeasure.
Note that the optimum capacitance must be checked for each set in the mounted state.
• Series connection of CR (0.1µF and 2.2Ω) between BTL outputs
• Series connection of CR (0.1µF and 2.2Ω) between each output pin and GND.
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Package Dimensions
unit : mm (typ)
3236A
29.2
25.6
(22.8)
(8.5) ( 2.5)
(R1.7)
4.5
1
(2.6)
(1.0)
2.0 2.0
25
0.52
0.4
4.0 4.2
SANYO : HZIP25
Pd max -- Ta
70
60
Infinite heat sink θj-c=1°C/W
50
40
heat sink(θf=3.5°C/W)
30 θj-c+θf=4.5°C/W
20
10
No heat sink θj-a=39°C/W
0
-40 -20
0 20 40 60 80 100 120 140 160
Ambient temperature, Ta -- °C
No.A0508-5/8
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for LA47202P electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ LA47202P.PDF Datasheet ] | |
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