View LA47536_511078.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Ordering number : ENN7901
SANYO Semiconductors
DATA SHEET
Monolithic Linear IC
LA47536
Overview
Four-Channel 45 W BTL Car Audio Power Amplifier
The LA47536 is a 4-channel BTL power amplifier IC developed for use in car audio systems. The output stage features a pure complimentary structure that uses V-pnp transistors on the high side and npn transistors on the low side to provide high power and superb audio quality. The LA47536 includes almost all the functions required for car audio use, including a standby switch, a muting function, and each protection circuit. It also provides a self-diagnosis function (output offset detection).
Functions and Features
* Voltage gain: 32 dB * High output power -- Pomax(1) = 45 W (typical) (At VCC = 14.4 V, f = 1 kHz, Vi = 2.5 Vrms, RL = 4 ) -- Pomax(2) = 40 W (typical) (At VCC = 13.7 V, f = 1 kHz, Vi = 2.5 Vrms, RL = 4 ) -- Po = 28 W (typical) (At VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 ) * Muting function (pin 22) * Standby switch (pin 4) * Built-in various protection circuits -- Output pin-to-VCC short -- Output pin-to-GND short -- Load short -- Over voltage -- Thermal shut down * Self-diagnosis function that detects the output offset (pin 25) * Output offset detection on/off switch (pin 1)
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
40804TN (OT) No.7901-1/7
LA47536 Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Junction to case thermal resistance Symbol VCC max1 VCC max2 IO peak Pd max Topr Tstg Conditions No signal, t = 1 minute With an input signal applied Per channel Assuming an infinite heat sink Ratings 26 18 4.5/ch 50 -40 to +85 -40 to +150 1 Unit V V A W C C C/W
j-c
Recommended Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Recommended load resistance Operating supply voltage range Symbol VCC RLop VCC op The range where Pd max is not exceeded Conditions Ratings 14.4 4 9 to 18 Unit V V
Electrical Characteristics at Ta = 25C, VCC = 14.4 V, RL = 4 , f = 1 kHz, Rg = 600
Parameter Quiescent current Standby current Output offset Voltage gain Voltage gain difference Output power Total harmonic distortion Channel separation Ripple rejection ratio Output noise voltage Muting attenuation Output center point potential Symbol ICCO Ist VN offset VG VG PO 1 PO max1 PO max2 THD CHsep SVRR VNO Ma VN THD = 10% VCC = 13.7 V, VIN = 2.5 Vrms VIN = 2.5 Vrms PO = 4 W VO = 0 dBm, Rg = 10 k Rg = 0, fr = 100 Hz, Vccr = 0 dBm, 20 Hz to 20 kHz Rg = 0, 20 Hz to 20 kHz VO = 20 dBm Rg = 0 70 50 40 RL = , Rg = 0 Vst = 0 Rg = 0 VO = 0 dBm -150 31 -1 23 28 40 45 0.1 60 45 300 90 2.65 450 0.4 32 Conditions Ratings min typ 200 max 400 10 +150 33 +1 Unit mA A mV dB dB W W W % dB dB Vrms dB V
Package Dimensions
unit : mm 3236
60
Pd max --Ta
INFINTE HEAT SINK j-c=1C/W
Allowable power dissipation, Pd max -- W
50
40
30
HEAT SINK(f=3.5C/W) j-c+f=4.5C/W
20
10
NO HEAT SINK j-a=39C/W
0 -40 -20 0 20 40 60 80 100 120 140 160
SANYO : HZIP25
Ambient temperature, Ta -- C
ILA06775
No.7901-2/7
LA47536
Functional Description 1. Standby Switch Function (pin 4) The pin 4 threshold voltage is set to be 2 VBE. When Vst is 2.0V or higher, the amplifier will be on, and when Vst is 0.7V or lower, the amplifier will be off. Note that pin 4 requires an operating current of at least 40A. 2. Muting Function The IC is set to the muted state by setting pin 22 to the ground potential. In this state, the audio output is muted. The time constant with which the muting function operates is set by an external RC circuit, and this time constant influences the pop noise that occurs when the amplifier is turned on or off. The muting on and off times due to the recommended external component values (R=10k, C=3.3F) are as follows. Muting on time: 50ms Muting off time: 20ms 3. Self-Diagnosis Function (Speaker burnout prevention) During steady state operation, the LA47536 detects, internally, whether or not an abnormal amplifier output offset has occurred, and outputs this signal from pin 25. Applications can prevent speaker burnout and other problems by having the system microcontroller detect this pin 25 output signal and control either the standby state or the power supply. (An abnormal output offset may be caused by, for example, input capacitor leakage current.) The pin 25 signal is turned off by setting pin 1 to the ground potential. 4. Oscillator Stability In some cases, parasitic oscillations may be induced by the PCB layout. This oscillation can be eliminated by adding the components listed below. Note that the optimal capacitor value must be verified by testing in the actual mounted state in the end product. * Connect a capacitor and resistor (0.1F and 2.2) in series between each output pin and ground. 5. Audio Quality (Low band) The frequency characteristics in the low frequencies can be improved by making the capacitance of the input capacitors variable. The recommended capacitance is 2.2F and smaller. 6. Protection Circuits Do not ground the outputs with the STBY voltage at around 1.4V. Also, do not turn the IC off in the grounded state with a time constant provided for the STBY voltage. 7. Pop Noise Although the LA47536 includes an pop noise prevention circuit, pop noise can be reduced even further by using the muting function as well. * Activate the muting function at the same time as power is applied. Then, after the output DC potential has stabilized, turn off the muting function. * When turning the amplifier off, first turn on the muting function and then turn off the power supply. These two methods are effective at minimizing pop noise.
No.7901-3/7
LA47536
Block and Application Diagram
2200F Vcc1/2 Vcc3/4
+
0.022F
6
20
IN1
+ 0.22F
11
Offset Detect Circuit
+
+
OUT1+
9
7
OUT1-
-
+5V
10k
-
25
OFFSET DET
Protective circuit
PWR GND1
8
+ OUT2+
- IN2
5
+ 0.22F
12
+
OUT2- -
3
PWR GND2
Aux
ST BY
2
Stand by
4
+5V ST ON
circuit
Switch Ripple Mute
Mute
10k
R.F 47F
+
10
Filter circuit
22
3.3F
+
IN3
+ 0.22F
15
+
+
17 19
OUT3+
Low Level Mute ON
OFFSET DET OFF S.W
-
OUT3-
-
1
GND OFFSET DET OFF
PWR GND3
Protective circuit
18
+ OUT4+
PRE GND
13
-
21
IN4
+ 0.22F
14
+
-
23
OUT4-
ON TIME C 22F
+
16
Muting & ON Time Control Circuit
PWR GND4
24
* Package: HZIP25
No.7901-4/7
LA47536
350
ICCO -- VCC
RL=Open Rg=0 Output midpoint voltage, VN -- V
4
VN -- VCC
RL=Open Rg=0
Quiescent current, ICCO -- mA
300
250
3
200
2
150
100
1
50 0 6 8 10 12 14 16 18 20
0 6 8 10 12 14 16 18 20
Supply voltage, VCC -- V
50
ILA06758 10 7 5 3 2 1.0 7 5 3 2 0.1 7 5 3 2 0.01 0.1 2 3
PO -- VCC
Supply voltage, VCC -- V
ILA06759
THD -- PO
40
30
20
10
0 8 9 10 11 12 13 14 15 16 17 18
Total harmonic distortion, THD -- %
f=1kHz RL=4 THD=10%
VCC=14.4V RL=4 f=1kHz
Output power, PO -- W
5 7 1.0
2
3
57
10
2
3
5
Supply voltage, VCC -- V
10 7 5 3 2 1.0 7 5 3 2 0.1 7 5 3 2 0.01 0.1 2 3 5 7 1.0 2 3 57 2
ILA06760 10 7
THD -- PO
Total harmonic distortion, THD -- % VCC=14.4V RL=4 f=100Hz
Output power, PO -- W
ILA06761
THD -- PO
Total harmonic distortion, THD -- %
5 3 2
VCC=14.4V RL=4 f=10kHz
1.0 7 5 3 2
10
3
5
0.1 7 0.1
2
3
5 7 1.0
2
3
57
10
2
3
5
Output power, PO -- W
10 7 5 3 2 1.0 7 5 3 2 0.1 7 5 3 2 0.01 100 2 3 5 7 1k 2 3 5 7 10k 2 3
ILA06762 4
THD -- f
Output power, PO -- W
ILA06763
Response -- f
Total harmonic distortion, THD -- %
VCC=14.4V RL=4 PO=4W Response -- dB
2
VCC=14.4V RL=4 VO=0dBm Cin=0.22F
0
-2
-4
-6
Frequency, f -- Hz
5 7 100k ILA06764
-8 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Frequency, f -- Hz
5 7100k ILA06765
No.7901-5/7
LA47536
CH. Separation -- f
VCC=14.4V RL=4 Rg=10k VO=0dBm (CH1)
80
80
CH. Separation -- f
VCC=14.4V RL=4 Rg=10k VO=0dBm (CH2)
70
70
Channel separation -- dB
60
Channel separation -- dB
60
50
50
40
40
30
30
20 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Frequency, f -- Hz
80
5 7100k ILA06766
20 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Frequency, f -- Hz
80
5 7100k ILA06767
CH. Separation -- f
VCC=14.4V RL=4 Rg=10k VO=0dBm (CH3)
CH. Separation -- f
VCC=14.4V RL=4 Rg=10k VO=0dBm (CH4)
70
70
Channel separation -- dB
60
Channel separation -- dB
60
50
50
40
40
30
30
20 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Frequency, f -- Hz
0.4
5 7100k ILA06768
20 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Frequency, f -- Hz
70
5 7100k ILA06769
VNO -- Rg
Ripple rejection ratio, SVRR -- dB VCC=14.4V RL=4
SVRR -- fR
VCC=14.4V VCCR=0dBm Rg=0 RL=4 CVCC=0.1F
Output noise voltage, VNO -- mV rms
60
0.3
50
0.2
40
0.1
30
0 10
23
5 7100
23
5 7 1k
23
Rg --
5 7 10k
23
5 7100k ILA06770
20 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
60
SVRR -- VCC
Ripple rejection ratio, SVRR -- dB VCCR=0dBm fR=100Hz Rg=0 RL=4 CVCC=0.1F
Ripple frequency, fR -- Hz
60
5 7100k ILA06771
SVRR -- VCCR
Ripple rejection ratio, SVRR -- dB
50
50
VCC=14.4V fR=100Hz Rg=0 RL=4 CVCC=0.1F SVRR=20log (VCCR / VO)
40
40
30 6 8 10 12 14 16 18 20
30 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
Supply voltage, VCC -- V
ILA06772
Supply ripple voltage, VCCR -- V rms
ILA06773
No.7901-6/7
LA47536
60
Pd -- PO
VCC=14.4V f=1kHz RL=4 With 4 channels operating
50
Power dissipation, Pd -- W
40
30
20
10
0 0.1
Pd=VCC x ICC -- 4PO
2 3 5 7 1.0 2 3 5 7 10 2 3 5
Output power, PO -- W
ILA06774
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 expor ted without obtaining the expor t license from the author ities 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 April, 2004. Specifications and information herein are subject to change without notice.
PS No.7901-7/7

▲Up To Search▲

Price & Availability of LA47536

	To Download LA47536 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .