SANYO LA4266 Datasheet

Ordering number: ENN7091

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Monolithic Linear IC

LA4266

3 W Monaural Power Amplifier

Overview

The LA4266 is a 3W power amplifier intended for televi­sions.
This IC has a series of pin compatible monaural and 2­channel power amplifiers, thus allows the end product to
use a common circuit boad.

Features

• Television audio output.

• Pin compatible with the LA4267 (5 W)/4268 (10 W) and

the LA4276 (3 W × 2)/4277 (5 W × 2)/4278(10 W× 2).

• Package: SIP-10HD (2.54 mm pitch, straight pins).

• Thermal protection circuit and overvoltage protection
circuit on chip.

• Output power: 3 W (VCC = 16 V/RL = 8 Ω).

Specifications

Maximum Ratings at Ta = 25°C

Package Dimensions

unit: mm

3248-SIP10HD

[LA4266]

15.4max

(11.8)

4.5

2.4

0.4

1.2

25.6

C0.7

110

1.37

2.54

3.4

0.5

(10.0)

1.15

2.0

13.9

11.2

1.0 min

SANYO: SIP10HD

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

Maximum output current IO peak 1.5 A

Allowable power dissipation Pd max Infinite heat sink 15.0 W

Thermal resistance

Operating temperature Topr –20 to +75 °C

Storage temperature Tstg –40 to +150 °C

CC

θ

j-c 3.0 °C/W

Rg = 0 25 V

Operating Conditions at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

Load resistance R

Operating supply voltage range VCC op Range does not exceed Pd 10 to 24 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.

CC

L

16 V

8 Ω

32902RM (II) No. 7091-1/6

LA4266

Operating Characteristics at Ta = 25°C, VCC = 16 V, RL = 8 Ω, f = 1 kHz, Rg = 600 Ω, with specified board, in

specified circuit

Parameter Symbol Conditions

Quiescent current I

CCO

Rg = 0 25 50 mA

Voltage gain VG VO = 0 dBm 38 40 42 dB

Total harmonic distortion THD PO = 0.5 W 0.1 0.8 %

Output noise voltage V

Output power P

NO

O

Rg = 10 kΩ, BPF = 20 Hz to 20 kHz 0.25 1.0 mV

THD = 10 % 2.5 3.0 W

Ripple rejection SVRR Rg = 0, fr = 100 Hz, Vr = 0.5 Vrms 45 55 dB

Ratings

min typ max

Unit

Pd max – Ta

200 40 60 80 100 120 140

Allowable power dissipation, Pd max – W

16

15

14

12

10

Infinite heat sink

100 × 100 × 1.5 mm

11.7

8

50 × 50 × 1.5 mm

5.8

6

4

No heat sink

2

2

0

--20

Ambient temperature, Ta – °C

Pin Assignment and Equivalent Circuit Diagram

15

3

7.02

3

3.48

1.2

AI heat sink
Mounting
torque 39N•cm
Flat washer
Silicone grease
applied

ILA00835

160

30 kΩ

C1

100 µF

Filter

PRE GND

+

R1

NC

1 2 3 4

NC

C5

R2

V

CC

0.1 µF

1.0 Ω

IN

5 6 7 8910

750 Ω

+

C2

NF

300 Ω

+

C3

100 µF

R

4.7 µF

L

OUT

+

Power GND

C4

1000 µF

NC

+

C6

1000 µF

* For Muting, add a resistor between pin 3 and GND. 750 Ω for the LA4266/67/68, 200 Ω for the LA4276/77.

No. 7091-2/6