•
DATA SHEET
LND386
GENERAL DESCRIPTION
The LND386 is a power amplifier designed for
use in low voltage consumer applications. The
gain is internally set to 20 to keep external part
count low, but the addition of an external
resistor and capacitor between pins 1 and 8
will increase the gain to any value up to 200.
The inputs are ground referenced while the
output is automatically biased to one half the
supply voltage. The quiescent power drain is
only 24 milliwatts when operating from a 6 volt
supply, making the LND386 ideal for battery
operation.
LOW VOLTAGE AUDIO POWER AMPLIFIER
FEATURES
• Battery operation
• Minimum external parts
• Wide supply voltage range 4V to 12V
• Low quiescent current drain 4mA
(Typ)
• Voltage gains: 20-200
• Ground reference output
• Self-centering output quiescent
voltage
• Low distortion
PIN CONFIGURATION
APPLICATIONS
• AM-FM radio amplifiers
• Portable tape player amplifiers
• Intercoms
• TV sound system
• Line Drivers
• Ultrasonic drivers
• Small servo drivers
• Power converters
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 •
www.lineardimensions.com
•
Absolute Maximum Rating
PARAMETER SYMBOL MAXIMUM UNITS
Supply voltage V
Power dissipation P
Input voltage V
Junction temperature Tj +150 ºC
Operating temperature T
Storage temperature T
cc
D
in
OPR
STG
15 V
660 mW
±0.4 V
-20...+70 ºC
-40...+125 ºC
Electrical Characteristics
(T
=25ºC, VCC=6V,R
A
= 8ΩΩΩΩ, f = 1KHz, unless otherwise specified)
L
LND386
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Quiescent Current I
Output Power P
CCQ
OUT
V
048mA
IN =
VCC=6V, THD=10% 250 325
mW
VCC=9V, THD=10% 500 700
Pins 1and 8 Open 26
Voltage Gain Av
dB
10µF from Pin 1 to 8 46
Bandwidth BW
Total Harmonic
Distortion
Power Supply
Rejection Ratio
Input Resistance R
Input Bias Current I
THD
PSRR
IN
BIAS
Pins 1 and 8 Open 300
10µF from Pin 1 to 8 60
P
=125mW, Pins 1
out
and 8 Open
=10µF, Pins 1
C
bypass
and 8 Open,
0.2 %
50 dB
KHz
Referred to output
50
kΩ
Pins 2 and 3 Open 250 nA
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 •
www.lineardimensions.com
•
LND386
Typical Applications
Amplifier with Gain = 20 (Minimum parts) Amplifier with Gain = 200
Amplifier with Bass Boost Square Wave Oscillator
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 •
www.lineardimensions.com
•
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