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LND386
LOW VOLTAGE AUDIO POWER AMPLIFIER
DATA
SHEET
GENERAL DESCRIPTION
• 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
FEATURES
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.
APPLICATIONS
• AM-FM radio amplifiers
• Portable tape player amplifiers
• Intercoms
• TV sound system
• Line Drivers
• Ultrasonic drivers
• Small servo drivers
• Power converters
PIN CONFIGURATION
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
PARAMETER SYMBOL MAXIMUM UNITS
Supply voltage Vcc 15 V
Power dissipation PD660 mW
Input voltage Vin ±0.4 V
Junction temperature Tj +150 ºC
Operating temperature TOPR -20...+70 ºC
Storage temperature TSTG -40...+125 ºC
(TA =25ºC, VCC=6V,RL = 8Ω
ΩΩ
Ω, f = 1KHz, unless otherwise specified)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Quiescent Current ICCQ VIN = 048mA
VCC=6V, THD=10% 250 325
Output Power POUT VCC=9V, THD=10% 500 700
mW
Pins 1and 8 Open 26
Voltage Gain Av 10µF from Pin 1 to 8 46 dB
Pins 1 and 8 Open 300
Bandwidth BW 10µF from Pin 1 to 8 60 KHz
Total Harmonic
Distortion THD Pout=125mW, Pins 1
and 8 Open 0.2 %
Power Supply
Rejection Ratio PSRR
Cbypass=10µF, Pins 1
and 8 Open,
Referred to output
50 dB
Input Resistance RIN 50 kΩ
Input Bias Current IBIAS Pins 2 and 3 Open 250 nA
Absolute Maximum Rating
LND386
Electrical Characteristics
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
