SANYO LA4445 Datasheet

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

5.5W 2-Channel AF Power Amplifier

Ordering number:ENN1277E

LA4445

SANYO Electric Co.,Ltd. Semiconductor Company

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

Features

• Dual channels.

Output : 5.5W×2 (typ.)

• Minimun number of external parts required.

• Small pop noise at the time of power supply ON/OFF and
good starting balance.

• Good ripple rejection : 46dB (typ.)

• Good channel separation.

• Small residual noise (Rg=0).

• Built-in protectors.

a. Thermal protector
b. Overvoltage, surge protector
c. Adjacent pins (9-10, 9-8) short protector

Specifications

Absolute Maximum Ratings at Ta = 25˚C

retemaraPlobmySsnoitidnoCsgnitaRtinU

egatlovylppusmumixaM

egatlovylppusegruS

tnerructuptuomumixaM

noitapissidrewopelbawollAxamdP.citsiretcarahcaT–xamdPeeS 51W

erutarepmetgnitarepOrpoT 57+ot02–

erutarepmetegarotSgtsT 051+ot04–

V
V

V

1xam)s03=t(tnecseiuQ 52V

CC

2xamgnitarepO 81V

CC

)egrus(

CC

IOkaep

t≤ s2.0 05V

Package Dimensions

unit:mm

3049A-SIP12H

[LA4445]

27.0

20.0

8.4

7.0

2.5

lennahc1 5.3A

2.0

0.5

1.0

R1.7

11.8

1.0min

121

SANYO : SIP12H

4.0

13.2max

6.0

0.4

2.0

˚C
˚C

Operating Conditions at Ta = 25˚C

retemaraPlobmySsnoitidnoCsgnitaRtinU

egatlovylppusdednemmoceRV

ecnatsiserdaoldednemmoceRR

egnaregatlovgnitarepOV

CC

L

po 61ot01V

CC

slennahc2 4

21500TH (KT)/90196RM/N283KI, TS No.1277–1/7

2.31V

Ω

LA4445

Operating Characteristics at Ta = 25˚C, VCC=13.2V, RL=4Ω, f=1kHz, Rg=600Ω, with 100×100×1.5mm

Al heat sink, See specified Test Circuit.

retemaraPlobmySsnoitidnoC

tnerructnecseiuQI

niagegatloVV

rewoptuptuOP

noitrotsidcinomrahlatoTDHTPOW1=51.00.1%

ecnatsisertupnIr

egatlovesiontuptuOV

noitcejerelppiRR

noitarapeslennahCpeshCk01=gR Ω V,

occ
G
O

i

ON

r

0=gR6.00.1Vm

k01=gR Ω 0.10.2Vm
V,0=gR

R

slennahc2,%01=DHT0.55.5W

f,Vm002=

zH001=64Bd

R

mBd0=5455Bd

O

nimpytxam

sgnitaR

57051Am

5.945.155.35Bd

03kΩ

Equivalent Circuit Block Diagram

3

tinU

Sample Application Circuit

No.1277–2/7

Sample Printed Circuit Pattern

LA4445

Proper Cares in Mounging Radiator Fin

1. The mounting torque is in the range of 39 to 59N · cm.

2. The distance between screw holes of the radiator fin must coincide with the distance between screw holes of the IC.
With case outline dimensions L and R referred to, the screws must be tightened with the distance between them as
close to each other as possible.

3. The screw to be used must ha v e a head equivalent to the one of truss machine screw or binder machine screw defined
by JIS. Washers must be also used to protect the IC case.

4. No foreign matter such as cutting particles shall exist between heat sink and radiator fin. When applying grease on the
junction surface, it must be applied uniformly on the whole surface.

5. IC lead pins are soldered to the printed circuit board after the radiator fin is mounted on the IC.

No.1277–3/7