Ficha Técnica LA4620

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

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

LA4620

No.3607–3/8

Pin DescriptionrebmuN emaN noitpircseD

1 V CC egatlovylppuS

2 PIR retlifelppiR

3 1TUPNI tupni1lennahC

4 2FN tupnikcabdeefevitagen1lennahC


6 DNG dnuorG



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





12 DNG dnuorG



Test Circuit

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

–

%


SVRR – VCC


Rip

ple

reje

ctio

n ra

tio,

SV

RR

–

dB

f Characteristics

Am

plit

ude

resp

onse

–

W

Frequency, f – Hz

LA4620

No.3607–5/8

ICCO, IST – VCC


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


Pow

er d

issi

pati

on, P

d –

W

VNO – VCC

Out

put n

oise

vol

tage

, VN

O

– m

V


ICC – PO


Sup

ply

curr

ent,

I CC

–

A

THD – VCC

Tota

l har

mon

ic d

isto

rtio

n, T

HD

–

%


Pd max – VCC

All

owab

le p

ower

dis

sipa

tion

, Pd

max

–

W


ICCO – Ta

Qui

esce

nt c

urre

nt, I

CC

O

– m

A

Ambient temperature, Ta – °C

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

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.

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

This datasheet has been download from:

www.datasheetcatalog.com

Datasheets for electronics components.

http://www.datasheetcatalog.com



Ficha Técnica LA4620

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