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PDF LV47011P Data sheet ( Hoja de datos )
| Número de pieza | LV47011P | |
| Descripción | 4-Channel BTL Power Amplifier | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1838B
LV47011P
Monolithic Linear IC
For Car Audio Systems
4-Channel BTL Power Amplifier
Overview
The LV47011P is the IC for 4-channel BTL power amplifier that is developed for car audio system.
Pch DMOS in the upper side of the output stage and Nch DMOS in the lower side of the output stage are complimentary.
High power and high quality sound are realized by that.
This IC incorporate various functions (standby switch, muting function, and various protection circuit) necessary for car
audio system. Also, it has a self-diagnosis function.
Functions
• High output : PO max = 50W (typical) (VCC = 15.2V, f = 1kHz, JEITA max, RL = 4Ω)
: PO max = 29W (typical) (VCC = 14.4V, f = 1kHz, THD = 10%, RL = 4Ω)
: PO max = 22W (typical) (VCC = 14.4V, f = 1kHz, THD = 1%, RL = 4Ω)
• Built-in muting function (pin 22)
• Built-in Standby switch (pin 4)
• Built-in Self-diagnosis function (pin 25) :
Signal output in case of output offset detection, shorting to VCC, shorting to ground, and load shorting.
• Electric mirror noise decrease
• Built-in various protection circuit (shorting to ground, shorting to VCC, load shorting, over voltage and thermal shut
down)
• No external anti-oscillation part necessary.
Note 1 : Please do not mistake connection.
A wrong connection may produce destruction, deterioration and damage for the IC or equipment.
Note 2 : The protective circuit function is provided to temporarily avoid abnormal state such as incorrect output connection.
But, there is no guarantee that the IC is not destroyed by the accident.
The protective function do not operate of the operation guarantee range. If the outputs are connected incorrectly, IC
destruction may occur when used outside of the operation guarantee range.
Note 3 : External parts, such as the anti-oscillation part, may become necessary depending on the set condition. Check their
necessity for each set.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any
guarantee thereof. If you should intend to use our products for new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the
intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely
responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. 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.
O2611 SY 20110930-S00015/60811 SY/92910 SY 20100910-S00002 No.A1838-1/10
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
LV47011P
4. Self-diagnostics function (pin 25)
By detecting the unusual state of the IC, the signal is output to the pin 25.
Also, by controlling the standby switch after the signal of the pin 25 is detected by the microcomputer, the burnout of
the speaker can be prevented.
(1) Shorting to VCC/Shorting to ground : The pin 25 becomes the low level.
(2) Load shorting
: The pin 25 is alternated between the low level and the high level
according to the output signal.
(3) Output offset detection
: when the output offset voltage exceeds the detection threshold voltage,
the pin 25 becomes the low level.
* Note: The output offset abnormality is thought of as the leakage current of the input capacitor.
In addition, the pin 25 has become the NPN open collector output (active low).
The pin 25 must be left open when this function is not used.
5. Sound quality (low frequencies)
By varying the value of input capacitor, low-frequency characteristic can be improved.
However, it is concerned the shock noise. Please confirm in each set when the capacitance value varies.
6. Pop noise
For pop noise prevention, it is recommended to use the muting function at the same time.
• Please turn on the muting function simultaneously with power supply on when the amplifier is turned on. Next, turn
off the muting function after the output DC potential stabilization.
• When the amplifier is turn off, turn off the power supply after turning on the muting function.
7. 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 1500pF. (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.
No.A1838-5/10
Datasheet pdf - http://www.DataSheet4U.net/
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