SANYO LA4182 Datasheet

Ordering number: EN742G

Monolithic Linear IC

LA4182

2.3 W 2-Channel AF Power Amplifier

Features

.

Built-in 2 channels enabling use in stereo and bridge
amplifier applications.

.

High output: 2.3 W/channel, VCC=9V,RL=4Ω, and

4.7 W/bridge, R

.

Minimum number of external parts required : 9 pcs. min.
(Stereo/bridge).

.

Small pop noise at the time of power supply ON/OFF due to
built-in muting circuit.

.

Good ripple rejection ratio due to built-in ripple filter.

.

Soft tone at the time of output saturation.

.

Good channel separation.

.

Voltage gain fixed at 45 dB (Bridge: 51 dB). Variable
voltage gain available with external resistor added.

.

Easy to design radiator fin.

=8Ω.

L

Specifications

Package Dimensions

unit : mm

3022A-DIP12F

[LA4182]

SANYO : DIP12F

Note) In general applications, heat generated in this package

can be radiated through the Cu-foiled area of the printed
circuit board, but since power dissipation Pd may be
increased depending on the supply voltage and load
conditions, it is recommended to use a fin additionally.

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

Allowable power dissipation Pd max
Operating temperature Topr −20 to +75 °C

Storage temperature Tstg −55 to +150 °C

CC

max

With signal 11 V
Quiescent 15 V
With printed circuit board

(Refer to Pd-Ta characteristics)

4W

Recommended Operating Conditions at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Supply voltage V

Load resitance R

CC

L

Stereo 4 to 8 Ω
Bridge 8 Ω

9V

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

41596HA(II)/O207KI/2146KI/4025KI/O291KI,TS No.742-1/9

LA4182

Operating Characteristics at Ta = 25°C, VCC=9V,f=1kHz, RL=4Ω,Rg=600Ω, ( ): 8 Ω,

See specified Test Circuit.

Parameter Symbol Conditions min typ max Unit

Quiescent current I

CCO

Voltage gain VG
Voltage gain difference ∆VG Stereo ±1dB

Output power P

Total harmonic distortion THD
Input resistance r
Output noise voltage V

NO

Ripple rejection ratio R
Channel separation CHsep Rg = 10 kΩ,V

Cu plate (fin 1)
Fe plate

(fin 1)
Fe Plate

(fin 2)

Stereo Stereo 40 55 mA
Closed loop, V

= −45 dB Stereo 43 45 47 dB

IN

Closed loop, VIN = −45 dB Bridge 49 51 53 dB

THD = 10% Stereo 1.7

O

2.3

(1.3)

THD = 10% Bridge (4.7) W

= 250 mW Stereo 0.3 1.5 %

P

O

P

= 250 mW Bridge 0.5 %

O

i

21 30 kΩ
Rg = 0 Stereo 0.3 1.0 mV
Rg=10kΩ Stereo 0.5 2.0 mV
Rg=0,VR= 150 mV Stereo 40 46 dB

r

= 0 dB Stereo 40 55 dB

O

W

Recommended
printed circuit
board only

Cu-foiled area
reduced board

IC only

Allowable power dissipation, Pd max − W

Ambient temperature, Ta − °C

Pin Assignment and Equivalent Circuit

Shock
noise
rejecter

Input
amp 1

Input
amp 2

Ripple filter

Output
amp 1

Output
amp 2

Unit (resistance: Ω)

No.742 -2/9

Sample Application Circuit 1 : Stereo

LA4182

(Mylar)

(Mylar)

Unit (capacitance: F)

Stereo

Bridge

Unit (capacitance: F)

Example of printed pattern (bottom view) for use in stereo, bridge amplifier applications : 60 × 80 mm

2

Sample Application Circuit 2 : Bridge

(Mylar)

(Mylar)

Unit (capacitance: F)

No.742 -3/5