Ordering number:ENN2660B
Monolithic Linear IC
LA4460N, 4461N
12W AF Power Amplifier for Car Radio, Car Stereo
Features
•High gain of 51dB typ. and high power output of 12W typ.
•Possible to delete output and bootstrap capacitors, this encourages cost and space reductions due to external parts reduction.
•Reduced external components (8 pieces recommended, 6 pieces minimum).
•Almost no pop noises heard during power on or off operation.
•Soft tonal quality in saturated power output.
•Low distortion over low to high ranges of the audio frequencies.
•Low residual noises (Rg=0).
•Good operation conditions because of SIP (single ended pins) package having been employed for the LA4460N.
•All pin terminal layouts of the LA4461N are reversed for easy stereo PC board pattern arrengement.
•Two ground terminals for pre-amplifier and power amplifier are provided for easy PC board pattern arrangement and for stabilizing distortion chracteristics depending on signal source impedance.
•Voltage gain is fixed at 51dB, however, lowering the gain is possible by adding a resistor.
•IC is not damaged, if it is connected reversely.
•Audio muting functions (AC mute & DC mute) are equipped.
•Several protection circuits are installed, including :
a.Thermal protection circuit.
b.Overvoltage & surge voltage protection circuit.
c.Load short-circuit current limiting protection circuit.
d.Output pins DC short-circuit protection circuit. (grounding protection between OUT & GND, and speaker protection provided.)
Package Dimensions
unit:mm |
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3024A-SIP10H |
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[LA4460N, 4461N] |
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27.0 |
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4.0 |
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20.0 |
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R1.7 |
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8.4 |
7.0 |
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11.8 |
13.2max |
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1.0 min |
6.0 |
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1 |
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10 |
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1.4 |
0.5 |
2.54 |
2.07 |
0.4 |
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2.0 |
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SANYO : SIP10H |
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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 Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
21500TN (KT)/90196RM/D187KI, TS No.2660–1/12
LA4460N, 4461N
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
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Maximum supply voltage |
VCC max1 |
Quiescent (30s) |
25 |
V |
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VCC max2 |
with signal |
18 |
V |
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Supply current |
I10peak |
Instantaneous value duty≤5%, pulse width≤1ms flow-in |
4.5 |
A |
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only |
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Output current |
I7, I9 peak |
Instantaneous value duty≤5%, pulse width≤1ms |
4.5 |
A |
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Surge supply voltage |
Vsurge |
t≤0.2s |
50 |
V |
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Allowable power dissipation |
Pd max |
Tc=75˚C, See Pd max – Ta graph. |
25 |
W |
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Package thermal resistance |
θj-c |
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3 |
˚C/W |
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Operating temperature |
Topr |
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–20 to +75 |
˚C |
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Storage temperature |
Tstg |
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–40 to +150 |
˚C |
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Recommended Operating Conditions at Ta = 25˚C
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
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Recommended supply voltage |
VCC |
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13.2 |
V |
Load resistance |
RL |
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4 to 8 |
Ω |
Operating Characteristics at Ta = 25˚C, VCC=13.2V, RL=4Ω, f=1kHz, Rg=600Ω, with 100×100×1.5mm3
Al heat sink, See specified Test Circuit
Parameter |
Symbol |
Conditions |
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Ratings |
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Unit |
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min |
typ |
max |
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Quiescent current |
ICCO |
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65 |
120 |
mA |
Voltage gain |
VG |
closed loop, at specified recommended circuit. |
49 |
51 |
53 |
dB |
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Output power |
PO |
THD=10% |
10 |
12 |
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W |
Total harmonic distortion |
THD |
PO=1W |
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0.1 |
1.0 |
% |
Input resistance |
ri |
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21 |
30 |
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kΩ |
Output noise voltage |
VNO1 |
Rg=0, f=20Hz to 20kHz, band-pass filter |
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0.4 |
1.0 |
mV |
VNO2 |
Rg=10kΩ, f=20Hz to 20kHz, band-pass filter |
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0.6 |
2.0 |
mV |
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Output offset voltage |
Voff |
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–300 |
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+300 |
mV |
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Muting attenuation (AC) |
ATT |
VO=0dBm, VM=9V |
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38 |
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dB |
(Note) : For DC muting, ATT=∞
No.2660–2/12
LA4460N, 4461N
Equivalent Circuit Block Diagram
Sample Application Circuit 1 : Recommended Circuit
No.2660–3/12
LA4460N, 4461N
Sample Application Circuit 2 : An Example with Minimum Parts
Functional Description on the External Parts
Recommended number of the external parts for the LA4460N/4461N is 8 as shown in the Sample Application Circuit 1.
Namely they are : |
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4.µ7F/6.3V×2 |
· Feedback capacitors |
2 pieces |
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· Starting time adjustmant resistor |
1 pieace |
1.5kΩ |
· Oscillation compensation capacitor |
1 piece |
0.01µF |
· Oscillation compensation C · R |
4 pieces |
0.033µF×2, 4.7Ω×2 |
a)Feedback capacitor CNF
This relates to a low range cutoff frequency fL, and fL lowers with increasing value of the ‘C NF and increases with decreasing CNF.
b)Oscillation compensation capacitor CX
Signals are applied from the non-inverted NF terminal to the inverted NF terminal through the two CNF capacitors. It is recommended to connect the oscillation compensation capacitor CX=0.01µF between the floating junction of the capacitors (minus side of CNF) and GND. As a rule a polyester film capacitor is recommended, but a ceramic type may be used if a PC board shows good circuit stability.
No.2660–4/12
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