Ficha Técnica LA4620
description
Transcript of Ficha Técnica LA4620
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Any and all SANYO products described or contained herein do not have specifications that can handleapplications that require extremely high levels of reliability, such as life-support systems, aircraft’scontrol systems, or other applications whose failure can be reasonably expected to result in seriousphysical and/or material damage. Consult with your SANYO representative nearest you before usingany SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or otherparameters) listed in products specifications of any and all SANYO products described or containedherein.
Monolithic Linear IC
Two-channel Audio Power Amplifier
Ordering number:ENN3607A
LA4620
SANYO Electric Co.,Ltd. Semiconductor CompanyTOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
40500TN (KT)/2071TS (US) No.3607–1/8
Package Dimensionsunit:mm
3160-SIP23HZ
[LA4620]
SANYO : SIP23HZ
OverviewThe LA4620 is a two-channel high-power audio amplifierfor automotive stereo and general-purpose audio amplifi-cation equipment.The LA4620 has a 6 to 22V operating supply voltage range.Each channel uses a bridge configuration to obtain highoutput power from low supply voltages. Typical outputpower is 17W per channel.The LA4620 incorporates a thermal protection circuit, anoutput short-circuit protection circuit and a pop suppres-sion circuit. It has low-power, logic-level standby controland mute control inputs.The LA4620 is available in 23-pin SIPs and operates froma 15V supply.
Features• 17W output power per channel.• 6 to 22V supply voltage range.• Pop suppression.• Logic-controlled standby mode.• Thermal protection.• Short-circuit protection.• 60dB channel separation.• 58dB supply voltage ripple rejection.• 0.2% harmonic distortion.• 23-pin SIP.
0.5
37.030.0
1.5
2.0
1
0.9
23
R1.
7
4.5
9.5
16.8
3.6
1.8
13.8
0.4
2.45
R=0.4
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LA4620
No.3607–2/8
SpecificationsMaximum Ratings at Ta = 25˚C
Recommended Operating Conditions at Ta = 25˚C
˚C
˚C
retemaraP lobmyS snoitidnoC sgnitaR tinU
egatlovylppuS V CC xam 42 V
noitapissidrewopelbawollA xamdP 5.73 W
erutarepmetgnitarepO rpoT 57+ot02–
erutarepmetegarotS gtsT 051+ot04–
retemaraP lobmyS snoitidnoC sgnitaR tinU
egatlovylppuS V CC 51,21 V
egnaregatlovylppuS V CC 22ot6 V
ecnatsiserdaoL RL 4 Ω
NoteWhen operating at 22V with a load of 4Ω, ensure that the output power, PO, does not exceed 1W per channel.
Electrical Characteristics at Ta = 25˚C, VCC=15V, f=1kHz, RL=4kΩ, Rg=600Ω unless otherwise noted
retemaraP lobmyS snoitidnoCsgnitaR
tinUnim pyt xam
tnerructnecseiuQ I OCC 05 57 021 Am
tnerrucybdnatS I TS 1 01 Aµ
rewoptuptuOPO1 V CC %01=DHT,V21= 01 31 W
PO2 V CC %01=DHT,V51= 41 71 W
noitrotsidcinomrahlatoT DHT PO W1= 2.0 0.1 %
ecnatsisertupnI R NI 71 42 13 kΩniagegatloV GV 24 44 64 Bd
egatlovesiontuptuOV ON 1 0=gR Ω zHk02otzH02=egnarycneuqerfssapdnab, 2.0 5.0 Vm
V ON 2 k01=gR Ω otzH02=egnarycneuqerfssapdnab,zHk02 5.0 0.1 Vm
noitarapeslennahC PESHC k01=gR Ω V, O mBd0= 54 06 Bd
noitcejerelppiregatlovylppuS RRVS 0=gR Ω f, R V,zH001= CC mBd0=R 54 85 Bd
egatlovtesffO V SO 0=gR Ω 081– 081+ Vm
Pd max – Ta
Ambient temperature, Ta – °CAll
owab
le p
ower
dis
sipa
tion
, Pd
max
–
W
θ f – Sf
Heat sink area, Sf – cm2
Hea
t sin
k th
erm
al r
esis
tanc
e, θ
f –
°C
/W
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LA4620
No.3607–3/8
Pin DescriptionrebmuN emaN noitpircseD
1 V CC egatlovylppuS
2 PIR retlifelppiR
3 1TUPNI tupni1lennahC
4 2FN tupnikcabdeefevitagen1lennahC
5 1FN tupnikcabdeefevitagen1lennahC
6 DNG dnuorG
7 3FN tupnikcabdeefevitagen2lennahC
8 4FN tupnikcabdeefevitagen2lennahC
9 2TUPNI tupni2lennahC
01 YBDNATS hctiwsybdnatS
11 V CC egatlovylppuS
21 4SB roticapacpartstoob2lennahC
31 ETUM lortnocgnituM
41 4TUO tuptuo2lennahC
51 DNG dnuorG
61 CN noitcennocoN
71 3TUO tuptuo2lennahC
81 3SB roticapacpartstoob2lennahC
91 1SB roticapacpartstoob1lennahC
02 1TUO tuptuo1lennahC
12 DNG dnuorG
22 2TUO tuptuo1lennahC
32 2SB roticapacpartstoob1lennahC
Test Circuit
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LA4620
No.3607–4/8
PO – VCC
Supply voltage, VCC – V
Out
put p
ower
, PO
–
mW
CH sep – f
Frequency, f – Hz
Cha
nnel
sep
arat
ion,
CH
sep
–
dB
THD – PO
Tota
l har
mon
ic d
isto
rtio
n, T
HD
–
%
Output power, PO – W
SVRR – VCCR
Supply voltage ripple rejection, VCCR – V
Rip
ple
reje
ctio
n ra
tio,
SV
RR
–
dB
THD – PO
Tota
l har
mon
ic d
isto
rtio
n, T
HD
–
%
Output power, PO – W
SVRR – VCC
Supply voltage, VCC – V
Rip
ple
reje
ctio
n ra
tio,
SV
RR
–
dB
f Characteristics
Am
plit
ude
resp
onse
–
W
Frequency, f – Hz
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LA4620
No.3607–5/8
ICCO, IST – VCC
Supply voltage, VCC – V
Qui
esce
nt c
urre
nt, I
CC
O
– m
A
Sta
ndby
cur
rent
, IS
T
– µ
A
VNO – Rg
Single source impedance, Rg – Ω
Out
put n
oise
vol
tage
, VN
O
– m
V
Pd – PO
Output power, PO – W
Pow
er d
issi
pati
on, P
d –
W
VNO – VCC
Out
put n
oise
vol
tage
, VN
O
– m
V
Supply voltage, VCC – V
ICC – PO
Output power, PO – W
Sup
ply
curr
ent,
I CC
–
A
THD – VCC
Tota
l har
mon
ic d
isto
rtio
n, T
HD
–
%
Supply voltage, VCC – V
Pd max – VCC
All
owab
le p
ower
dis
sipa
tion
, Pd
max
–
W
Supply voltage, VCC – V
ICCO – Ta
Qui
esce
nt c
urre
nt, I
CC
O
– m
A
Ambient temperature, Ta – °C
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LA4620
No.3607–6/8
Functional DecriptionStandby Mode ControlApplying 1.5V or more to R3 at STANDBY SW enablesthe amplifier. The maximum input current is 400µA.
Mute ControlPulling MUTE to ground mutes the amplifier. The startuptime and recovery time when MUTE is pulled HIGH canbe adjusted by changing C9.
Short-circuit ProtectionThe LA4620 incorporates a protection circuit for shortcircuits between output pins. However, this is inadequatefor short circuits to ground or the supply. See the designnotes.
PO – TaO
utpu
t pow
er, P
O
– W
Ambient temperature, Ta – °C
ON Time – C9
Sta
rtup
tim
e, O
N ti
me
–
s
Input 1 coupling capacitor, C9 – µF
Cen
ter
volt
age
–
V
Standby voltage – V
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LA4620
No.3607–7/8
Sample Printed Circuit Pattern
Note
Board size : 125 × 85mmSurface finish : Copper foil
Design NotesInput CapacitorsC1 and C4 are input coupling capacitors. They shouldboth be 4.7µF or less.
Feedback CapacitorsC2 and C5 from the negative feedback network. Theysould both be between 47 and 100µF.
Supply Decoupling CapacitorC7 should be 100µF.
Supply Ripple Filter CapacitorsC8 and C14 smooth the supply voltage. Both should be atleast 1,000µF, and one of at least 2,000 µF can be used.
Startup Time CapacitorC9 determines the amplifier startup time.
Bootstrapping CapacitorsC10, C13, C15 and C18 improve the device linearity fora wide range of input signals. These capacitors should bebetween 47µF and 100µF to improve the low-frequencyresponse.
Oscillation SuppressionThe R1 and C3, and R2 and C6 networks suppressoscillation. Use ceramic or mylar capacitors of 0.1µF ormore. Avoid using very large capacitances as these cancause high-frequency distortion.C11, C12, C16, and C17 from RC networks with R4, R5,R6 and R7, respectively. Use mylar capacitors of 33nF ormore to prevent instability caused by circuit board layout.
Standby Control Current Limiting ResistorR3 limits the current applied to STANDBY SW. It shouldbe 10Ω or more.
HeatsinkingThe LA4620 should always be operated with a heatsink.If the heatsink does not provide adequate thermal dissipa-tion, the thermal protection circuit will attenuate thesignal level when the device overheats to prevent long-term thermal stress.
Short-circuit ProtectionIf outputs can be shorted either to ground or the supply,use an external circuit to protect the device as shown inthe following figure.
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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 guaranteesof the performance, characteristics, and functions of the described products as mounted in the customer'sproducts 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 allsemiconductor 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 sothat these kinds of accidents or events cannot occur. Such measures include but are not limited to protectivecircuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or al l 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 l icense from the authorit iesconcerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic ormechanical, 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 toproduct/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 notguaranteed for volume production. SANYO believes information herein is accurate and reliable, butno guarantees are made or implied regarding its use or any infringements of intellectual property rightsor other rights of third parties.
This catalog provides information as of April, 2000. Specifications and information herein are subject to
change without notice.
LA4620
PS No.3607–8/8
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