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Sanyo
Sanyo

LA4601 Datasheet

Audio Power Amplifier for Radio Cassette Recorders


LA4601 Datasheet Preview


Ordering number : EN6013
LA4601
Monolithic Linear IC
LA4601
Audio Power Amplifier for
Radio Cassette Recorders
Overview
This is a different-package version of the power
amplifier LA4600 with ultralow peripheral
component count. Basic power supply spec is Vcc
= 15V, but a 9V spec for operation without
heatsink is also possible. BS capacitor, NF
capacitor, and oscillation-stopping CR components
are incorporated into the IC circuitry.
Functions
• Pin compatible with the LA4600
• Heatsink not required for 9V version
• Output power VCC =15V/3....7.0W X 2
• Built-in stanby switching
• Built-in overheat protection (TSD)
Package Dimensions
unit: mm
3024-SIP10H
[LA4601]
27.0
20.0
4.0
1
1.4
10
0.5 2.54
2.07
0.4
2.0
SANYO : SIP10H
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Maximum supply voltage
Vcc max
Allowable power dissipation
Pd max
Thermal resistance
θ j-c
Operating temperature
Topr
Storage temperature
Tstg
Conditions
Rg=0 (No signal)
With an arbitrary large heatsink
Ratings
24
25.0
3.0
– 20 to +75
– 40 to +150
Unit
V
W
°C/W
°C
°C
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 Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
N1298RM(KI)No. 6013-1/7
Page 1

LA4601
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance
Operating supply voltage range
Operating load resistance range
Symbol
Vcc
RL
Vcc op
Conditions
Within maximum ratings
Electrical Characteristics at Ta = 25°C, VCC = 15V, RL = 3, f = 1 kHz
Parameter
Symbol
Conditions
Standby current
Quiescent current
Voltage gain
Total harmonic distortion
Output noise voltage
Output voltage
Channel separation
Ripple suppression
Stanby ON voltage
Input resistance
Ist
Icco
VG
THD
Vno
Po1
Po2
Chsep
SVRR
Vst
Ri
Standby pin -> GND
Rg=0
Vo=0 dBm
Po=1w
Rg=0, DIN AUDIO
THD=10%
Vcc=9V, RL=4, THD=10%
Vo=0 dBm, Rg=0, DIN AUDIO
Vr=0 dBm, Rg=0, fr=100 Hz DIN AUDIO
Ratings
15
3
5.0 to 22
2.7 to 8
Unit
V
V
Ratings
min typ
1.0
20 35
43.0
45.0
0.2
0.15
6.0 7.0
1.5 2.0
50 60
45 55
1.5 5.0
20 30
max
10
70
47.0
0.8
0.5
40
Unit
µA
mA
dB
%
mV
W
W
dB
dB
V
k
Block Diagram
Standby
7
VCC
4
Standby switching
CH1 input 10
RNf1
Small signal 9
GND
RNf2
CH1 input
amplifier
Rf1
Predrive
amplifier
Output
amplifier
REF
amplifier
Rf2
TSD protector
CH2 input 8
CH2 input
amplifier
Predrive
amplifier
Pop noise prevention block
6
P.P
Output
amplifier
Ripple filter
5
Filter
1 CH1 output
2 Large signal
GND
3 CH2 output
No. 6013-2/7
Page 2

Sample Application
LA4601
+5V
7
STANDBY
0.22µF
10
ch1
Input
4
VCC
+
1000µF
ch1
Output
1
1000µF
4
9 PRE GND
LA4601
POWER GND 2
0.22µF
8
ch2
Input
P.P
6
+
4.7µF
ch2
Output
3
1000µF
Filter
5
+
100µF
4
Pd max – Ta
28
With an arbitrary large heatsink
25
24
20
16
100X100X1.5mm3
12 12.5
AI heatsink
fastening
torque
39N•cm
Apply
silicone
grease
8 50X50X1.5mm3 7.0
4 With recommended substrate 3.6
IC only
3.2
0
–20 0
20 40 60 80
Ambient temperature, Ta – ˚C
100
No. 6013-3/7
Page 3

LA4601
Pin Descriptions
1. Standby switching function
Power is switched ON and OFF by controlling the High and Low states at pin 7,
respectively (standby). To switch power ON, apply 1.5V or more, or 800 µA to
pin 7.
Current supplied to pin
7 =..
Applied voltage
+
Applied voltage – VBE (approx. 0.7V)
2 k
2 k
7
• When directly connecting the microcontroller, add a resistor in series
to optimize the current for the microcontroller.
VCC
To bias circuit
2k
2k
2. Input pins (8,10)
Voltage at the input pins is approx. 2 VBE (1.4V).
Input impedance is approx. 30 k.
• The recommended value for the input capacitor is 0.22 µF, but this can be varied in order to adjust the starting time
(ts). (The starting time is the time required from applying voltage to the standby pin until sound output is obtained.)
Input capacitator
Starting time (ts)
1.0 µF
0.2s
2.2 µF
0.3s
3.3 µF
0.5s
4.7 µF
0.65s
10 µF
1.5s
3. Filter (decoupling) pin (5)
Pin voltage is approx. 1/2 VCC.
The recommended value for the filter capacitor is 100 µF.
When capacitance is lower, pop noise when setting the standby pin to Low (power OFF) will increase.
Filter capacitor= 100 µF
AC voltage (100 mV)
Output DC voltage
Filter capacitor= 47 µF
AC voltage (200mV)
Output DC voltage
No. 6013-4/7
Page 4
Part Number LA4601
Manufactur Sanyo
Description Audio Power Amplifier for Radio Cassette Recorders
Total Page 7 Pages
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