Sanyo LA4538M Specifications
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.
Monolithic Linear IC
Ripple Filter-Provided Stereo Power Amplifier
for 1.5V Headphone Stereos
Ordering number:ENN2667A
LA4538M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Features
• Low current dissipation.
• Excellent reduced voltage characteristics.
• Minimum number of external parts required.
• On-chip power switch function.
• Power amplifier section
Output power 8mW typ (VCC=1.5V, RL=16Ω, f=1kHz,
THD=10%)
Ripple rejection 46dB typ (VCC=1.0V, VR=–30dBm,
fR=100Hz)
• Ripple filter section
Ripple rejection 39dB typ (VCC=1.0V, VR=–35dBm,
fR=100Hz)
Less output voltage loss
Pin 8 can be used to perform the muting current.
Specifications
Absolute Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusmumixaMV
tnerructuptuomumixaMI
noitapissidrewopelbawollAxamdP 003Wm
erutarepmetgnitarepOrpoT 57+ot02–
erutarepmetegarotSgtsT 521+ot04–
xamtnecseiuQ 5.4V
CC
7tnerructuo-wolf7niP 0.5Am
O
Package Dimensions
unit:mm
3111-MFP14S
[LA4538M]
14
1
8.0
0.35
8
4.4
7
1.0
1.0
0.15
1.8max
1.50.1
SANYO : MFP14S
0.625
5.15
6.4
˚C
˚C
Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovgnitarpodednemmoceRV
egnaregatlovgnitarepOV
ecnatsiserdaoldednemmoceRR
CC
po 0.4ot9.0V
CC
L
Operating Characteristics at Ta = 25˚C, RL=16Ω, Rg=600Ω, See specified Test Circuit.
retemaraPlobmySsnoitidnoC
1occIV
tnerructnecseiuQ
niagegatloVGVV
ecnereffidniagegatloV
∆ GV
CC
2occIV
CC
3occIVCC1nip,V05.2= → R,DNG
CC
V
CC
R,tnecseiuq,V02.1=
3 → FFO5.40.7Am
L
41nip,V05.2= → R,DNG
V,zHk1=f,V09.0=
V,zHk1=f,V09.0=
3 → FFO5.15.2Am
L
3 → FFO0.1Aµ
L
mBd02–=5.72925.13Bd
O
mBd02–=0.1Bd
O
21800TN (KT)/3239YT/N197TA, TS No.2667–1/3
sgnitaR
nimpytxam
Continued on next page.
5.1V
Ω
23ot61
tinU
Continued from preceding page.
retemaraPlobmySsnoitidnoC
noitrotsidcinomrahlatoTDHTV
rewoptuptuOP
klatssorCTCV
)noitcesreifilpma(noitcejerelppiR1RRVS
)noitcesretlif(noitcejerelppiR2RRVSV
egatlovesiontuptuOV
ytivitisnestnerrucnorewoPI
ytivitisnesegatlovfforewoPV
ytivitisnestnerrucffognituMI
ytivitisnesegatlovnognituMV
egatlovtuptuoretlifelppiRV
Equivalent Circuit Block Diagram
LA4538M
sgnitaR
nimpytxam
P,zHk1=f,V02.1=
CC
V
O
ON
F
CC
CC
V
CC
zH001=FPB
CC
V
CC
V
)no(1
CC
V
)ffo(1
CC
V
)ffo(41
CC
V
)no(41
CC
V
CC
k1=gR,V05.2= Ω zHk02otzH02=FPB,5508Vµ
5nipV,V58.0= ≥ V5.01.00.1Aµ
5nipV,V58.0= ≤ V1.05.06.0V
5nipV,V58.0= ≥ V5.01.00.1Aµ
5nipV,V58.0= ≤ V1.05.06.0V
R,V00.1=
86= Ω 09.049.0V
L
Wm5.0=9.05.1%
O
%01=DHT,zHk1=f,V05.1=58Wm
k1=gR,zH001=f,V02.1= Ω V,
k1=gR,zH001=f,V00.1= Ω V,
V,zH001=f,V00.1=
R
Bd02–=0454Bd
O
R
mBd53–=4393Bd
,mBd03–=
0464Bd
tinU
Test Circuit
No.2667–2/3
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