LA4805 查看數據表（PDF） - SANYO -> Panasonic
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LA4805 Datasheet PDF : 17 Pages
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Ordering number : EN4469A
Monolithic Linear IC
LA4805V
3 V Stereo Headphone Power Amplifier
Overview
The LA4805V is a power IC developed for use in stereo
headphones. It includes low frequency enhancement, beep
function and output control circuits on-chip. Furthermore,
the LA4805V realizes a high S/N ratio, a high ripple
exclusion ratio, and low current drain.
Functions
• Stereo headphone power amplifier
• Low frequency enhancement (L.BOOST)
• Beep amplifier
• Output suppression circuit (PVSS)
• Power switch
• Muting switch
Features
• Low current drain (8.3 mA typical)
• High S/N ratio (90 dB typical, 13 µV)
• High ripple exclusion ratio (75 dB typical)
• No output electrolytic capacitors required
• Ultra-miniature package (SSOP-30)
Package Dimensions
unit: mm
3191-SSOP30
[LA4805V]
SANYO: SSOP30
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
Operating Conditions at Ta = 25°C
Conditions
Ratings
Unit
4.5
V
500
mW
–15 to +50
°C
–40 to +150
°C
Parameter
Recommended supply voltage
Recommended load resistance
Operating supply voltage range
Symbol
VCC
RL
VCC op
Conditions
Ratings
Unit
3.0
V
16 to 32
Ω
1.8 to 3.6
V
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 Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3098HA (OT)/40794TH B8-0242 No. 4469-1/17
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