LA4425A_07

Ordering number : EN3309D Monolithic Linear IC LA4425A Overview For Car Radio and Car Stereo 5W Power Amplifier with Very Few External Parts The LA4425A is a 5W power amplifier with very few external parts. The smallest package in the industry [SIP-5H(TO-126 type)]. Only two external parts (Only I/O coupling capacitors). Almost no evaluation, adjustment and check of its functions as a power IC required and simplified control Functions • Wide operation supply range → 5 to 16V • On-chip protection: - Over-voltage protection - Thermal protection - Output D.C. short protection . • On-chip pop noise reducing circuit Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Surge maximum supply voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VCC surge IO peak Pd max Topr Tstg With infinite heat sink Rg = 0 Giant pulse 200ms Rise time 1ms 3.3 7.5 -30 to +80 -40 to +150 A W °C °C Conditions Ratings 18 50 Unit V V 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 (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). 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 applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us 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. 53007 MS PC/53096HA(II)/20293TS/9200TA,TS(KOTO)/3050TA,TS(AF) No.3309-1/9 LA4425A Operating Conditions at Ta = 25°C, Parameter Recommended supply voltage Recommended load resistance Operating voltage range Operating load resistance range Symbol VCC RL VCC op RL op Under conditions where maximum ratings are not exceeded Conditions Ratings 13.2 4 5 to 16 2 to 8 Unit V Ω V Ω Electrical Characteristics at Ta = 25°C, VCC = 13.2V, RL = 4Ω, f = 1 kHz, Rg = 600Ω, specified board/specified circuit, 30×30×1.5mm3 thick aluminum used Parameter Quiescent current Voltage gain Output power Symbol ICCO VG PO1 PO2 Total harmonic distortion Output noise voltage Ripple rejection ratio THD VNO SVRR1 VO = 0dBm 13.2 V / 4Ω, THD = 10% 14.4 V / 4Ω, THD = 10% VO = 2V Rg = 0, BPF = 20 Hz to 20 kHz Rg = 0, BPF = 20 Hz to 20 kHz VR = 0dBm, fR = 100Hz SVRR2 Rg = 0, BPF = 20 Hz to 20 kHz VR = 0dBm, fR = 100 Hz Over-voltage attack Starting time Input resistance Roll-off frequency VCCX tS RIN fL fH Thermal operating temperature Tc Rg = 0 21.5 0.35 50 40 90 125 V s kΩ Hz kHz °C 47 dB 30 30 43 4 5 Conditions min Ratings typ 65 45 5 6 0.1 40 40 1.0 max 130 47 mA dB W W % dB dB Unit Package Dimensions unit : mm (typ) 3031C 10 Pd max -- Ta Al heat sink mounting toque 39N.cm with sillicone grease applied. 9.5 3.2 (2.0) 2.7 Allowable power dissipation, Pd max -- W 8 7.5 Infinite heat sink 100×100×1.5mm3 50×50×1.5mm3 30×30×1.5mm3 No heat sink 12 °C / W (2.0) 14.25max (11.8) 6 5.7 4.3 4 2.9 2 1.2 0.51min 1.1 1.5 10.0 13.0 0 -30 -20 0 20 40 60 80 100 Ambient temperature, Ta -- °C 1 (0.75) 2.0 5 0.6 0.5 1.2 SANYO : SIP5H No.A0195-2/9 LA4425A Sample Application Circuit VCC 13.2V Ci 2.2µF + 5 + 1000µF Co 1000µF 1 LA4425A 2 3 4 + • On-chip overvoltage protection • On-chip thermal protection • On-chip pop noise reducing circuit • On-chip output D.C. short protection speaker 4Ω Pin Voltage at VCC = 13.2V Characteristics Pin No. Pin voltage (reference value) Input 1 (≈ 2VBE) 1.4V Small signal GND 2 0V Large signal GND 3 0V Output 4 (≈ 1/2VCC) 6.5V VCC 5 (VCC) 13.2V IC Usage Notes Maximum ratings If the IC is used in the vicinity of the maximum ratings, even a slight variation in conditions may cause the maximum ratings to be exceeded, thereby leading to a breakdown. Printed circuit board When drawing the printed circuit pattern, refer to the sample printed circuit pattern. Be careful not to form a feedback loop between input and output. Comparison of External Components External Parts Output coupling capacitor Input coupling capacitor Bootstrap capacitor Feedback capacitor Filter capacitor Phase compensation capacitor Oscillation correction polyester film capacitor Oscillation correction resistor Total 8 pcs. 2 pcs. Our ICs now in use LA4425A Note: The power supply capacitor is not counted as a power IC part. No.A0195-3/9 LA4425A Sample Printed Circuit Pattern LA4425A GND − + CVCC=1000µF 5 1 VCC + − + − IN Ci=2.2µF GND Cu-foiled side 78.0×29.0mm2 OUT Co=1000µF 100 ICCO -- VCC RL=4Ω Rg=0 12 VN -- VCC RL=4Ω Rg=0 Quiescent current, ICCO -- mA 10 Output pin voltage, VN -- V 2 4 6 8 10 12 14 16 18 20 22 24 80 8 60 6 40 4 20 2 0 0 0 0 2 4 6 8 10 12 14 16 18 20 22 24 Supply voltage, VCC -- V 10 7 5 3 2 Supply voltage, VCC -- V 10 7 PO -- VIN Total harmonic distortion, THD -- % THD -- PO VCC=13.2V RL=4Ω f=1kHz Rg=600Ω VCC=13.2V RL=4Ω f=1kHz Rg=600Ω 5 3 2 Output power, PO -- W 1.0 7 5 3 2 0.1 7 5 3 2 1.0 1.0 7 5 3 2 0.1 7 5 5 2 3 5 7 10 2 3 5 7 100 7 0.1 2 3 5 7 1.0 2 3 5 7 10 Input voltage, VIN -- mV Output power, PO -- W f Response 1 0 -1 -2 3 2 THD -- f Total harmonic distortion, THD -- % 1.0 7 5 3 2 VCC=13.2V RL=4Ω Rg=600Ω VO=2V(PO=1W) Response -- dB -3 -4 -5 -6 -7 -8 -9 -10 10 23 fL fH 0.1 7 5 3 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 VCC=13.2V RL=4Ω Rg=600Ω VO=0dBm 5 100 23 5 1k 23 5 10k 23 5 100k Frequency, f -- Hz Frequency, f -- Hz No.A0195-4/9 LA4425A 5 THD -- VCC RL=4Ω f=1kHz VO=2V(PO=1W) Rg=600Ω Output power, PO -- W 12 PO -- VCC f=1kHz Rg=600Ω THD=10% RL=2Ω RL=4Ω Total harmonic distortion, THD -- % 3 2 10 1.0 7 5 3 2 8 6 4 0.1 7 5 6 2 8 10 12 14 16 18 20 0 8 10 12 14 16 18 20 Supply voltage, VCC -- V 700 Supply voltage, VCC -- V 7 1200 ICC, Pd -- PO RL=4Ω f=1kHz Rg=600Ω ICC ICC, Pd -- PO RL=2Ω f=1kHz Rg=600Ω ICC 10 600 6 1000 Power dissipation, Pd -- W 500 5 400 VCC=16V 800 8 4 600 VCC=16V 6 300 VCC=13.2V 3 400 200 2 VCC=13.2V 4 100 1 200 2 0 7 0.1 2 3 5 7 1.0 2 3 5 7 0 10 0 7 0.1 2 3 5 7 1.0 2 3 5 7 10 0 2 Output power, PO -- W 1.0 0.9 Output power, PO -- W 50 VNO -- Rg Ripple rejection ratio, SVRR -- dB SVRR -- VCC Output noise voltage, VNO -- mV 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 7 VCC=13.2V RL=4Ω BPF=20Hz to 20kHz Rg=0→0.12mV 40 30 20 10 RL=4Ω VR=0dBm fR=100Hz Rg=0 BPF=20Hz to 20kHz 9 10 11 12 13 14 15 16 17 18 19 1k 2 3 5 Signal source resistance, Rg -- Ω 7 10k 2 3 5 7 100k 2 0 8 Supply voltage, VCC -- V 50 50 SVRR -- VR Ripple rejection ratio, SVRR -- dB SVRR -- fR Ripple rejection ratio, SVRR -- dB 40 40 30 30 20 20 10 0 0 VCC=13.2V RL=4Ω fR=100Hz Rg=0 BPF=20Hz to 20kHz 200 400 600 800 1000 1200 10 VCC=13.2V RL=4Ω Rg=0 VR=0dBm BPF=20Hz to 20kHz 5 7 100 2 3 5 7 1k 2 0 0 Power supply ripple, VR -- mVrms Ripple frequency, fR -- Hz No.A0195-5/9 Power dissipation, Pd -- W Current drain, ICC -- mA Current drain, ICC -- mA LA4425A 80 ICCO -- Ta VCC=13.2V RL=4Ω Rg=0 10 VN -- Ta VCC=13.2V RL=4Ω Rg=0 Quiescent current, ICCO -- mA 60 Output pin voltage, VN -- V 8 6 40 4 20 2 0 -60 -40 -20 0 20 40 60 80 100 0 -60 -40 -20 0 20 40 60 80 100 Ambient temperature, Ta -- °C 6 Ambient temperature, Ta -- °C VCC=13.2V/4Ω Rg=0 Switch"ON"locus ts PO -- Ta VCC=13.2V RL=4Ω f=1kHz THD=10% 5 Output power, PO -- W 4 3 2 1 GND 0 -60 -40 -20 0 20 40 60 80 100 2V/div Ambient temperature, Ta -- °C VCC=13.2V/4Ω Rg=0 "OFF"locus 0.2s/div GND 2V/div 0.2s/div No.A0195-6/9 LA4425A Instructions and Precautions • Connect a capacitor of 1000pF across pins and for external disturbance path. • Be careful of the ground line artwork when laying out the printed circuit pattern. Arrange so that the Sg route and load current flow-in route do not overlap. Refer to the recommended printed circuit pattern or make slits, etc. at pins and . DUAL Printed Circuit Pattern Example GND OUT1 1 IN1 VCC GND IN2 1 OUT2 Cu-foiled side 45.0×75.0mm2 • Short Circuit Tests SW1 + SW3 + 13.2V LA4425A SW2 + SW4 SANYO Semiconductor's recommended printed circuit board: Apply VCC=13.2V using a 30×30×1.5mm3 thick aluminum board. The IC will be protected from the DC/AC shorting of switches 1 to 4 above. However, be careful not to damage the IC by turning VCC ”ON” when DC short (SW 1 or SW 2) is on. • Power Supply Positive Surge JASO tester Application of giant pulse 2.2µF + 0.15µF 13.2V Rg 620Ω LA4425A + 1000µF RL The over-voltage protector (VCCX ≈ 21.5V) inside the IC is used to cut all bias routes and reverse bias between B-E of output stage elements, in order to increase the power line’s capability of handling positive surge. This means, of course, that a VCES (VCBO) type output stage element is used instead of the VCEO (VCER) type. No.A0195-7/9 LA4425A • Load Resistance and Misoperation It should be noted that when RL < 2Ω and VCC is high, and the switch is turned “ON” when setting is for a signal (THD = 10%), the ground detector (current × voltage Schmitt circuit) operates momentarily. • Precautions on TaB If power voltage is applied to the IC substrate (the heat sink on a set), the IC structure is such that the PN junctions may be burned, causing deterioration or destruction. Consult SANYO Semiconductor’s Quality Assurance Department with regard to the energy handling capability (voltage peak value, pulse width). Also, the IC TaB (substrate) is connected to pin 3, large signal GND. • Test of +VCC to Output Pin Floating + + b LA4425A + a 13.2V The power pin is in a floating state when a power capacitor is connected, so if +VCC touches output lines a and b , the upper power transistor inside the IC will be damaged. The LA4425A has a protective bypass route inside the IC. • Starting Time (ts) This is set at 0.35sec/typ, but it can be made shorter by making input capacitor Ci smaller, or longer by making it larger. • Pop noise The pop noise prevention circuit operates to reduce pop until Rg reaches 50kΩ. However, if Rg is left open, the charging route of input capacitor Ci is lost, so the pop noise reduction circuit stops operating and click noises become louder. • VG/OSC The voltage gain is fixed at 45dB inside the IC. It is impossible to change it externally. Phase compensation capacitors (350pF/total) are connected between individual stages inside the IC, and the open loop gain is low. In addition, the upper and lower drives are made equivalent so that final stage current gain is adjusted, providing a measure against unwanted high-frequency parasitic oscillation peculiar to power IC’s. • BTL Connection Connection is impossible with IC alone. • Reverse Mounting of IC The pin assignment is such that there is no danger of damage. • T.S.D (Thermal Shutdown) Operating Temperature ICC,PO 30×30×1.5mm3 thick Al board Ta=25°C 0 20 40 60 80 100 120 140 160 180 Tc (°C) No.A0195-8/9 LA4425A T.S.D is capable of starting operation at Tc 120 to 130°C. When this is converted to junction temperature (Tj) according to the formula below. Tj ≈ 165C, Tj = Qjc.Pd + Tc As T.S.D operation progresses, the output pin bias voltage drops, and it becomes harder to drive the upper waveform. Therefore, the current (ICC) and power (PO) show a tendency to decrease. Proper Cares in Mounting Radiator Fin 1. The mounting torque is in the range of 1. The mounting torque is in the range of 39 to 59 N.cm. 2. The distance between screw holes of the radiator fin must coincide with the distance between screw holes of the IC. 3. The screw to be used must have a head equivalent to the one of truss machine screw or binder machine screw defined by JIS. Washers must be also used to protect the IC case. 4. No foreign matter such as cutting particles shall exist between heat sink and radiator fin. When applying grease on the junction surface, it must be applied uniformly on the whole surface. 5. Because the heat sink mounting tab and the heat sink are at the same electric potential as the chip’s GND, care must be taken when mounting the heat sink on more than one device. 6. IC lead pins are soldered to the printed circuit board after the radiator fin is mounted on the IC. SANYO Semiconductor Co.,Ltd. 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 Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of May, 2007. Specifications and information herein are subject to change without notice. PS No.3309-9/9