• DATA SHEET LND386 LOW VOLTAGE AUDIO POWER AMPLIFIER 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. PIN CONFIGURATION 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 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 • LND386 Absolute Maximum Rating PARAMETER SYMBOL MAXIMUM UNITS Supply voltage Vcc 15 V Power dissipation PD 660 mW Input voltage Vin ±0.4 V Junction temperature Tj +150 ºC Operating temperature TOPR -20...+70 ºC Storage temperature TSTG -40...+125 ºC Electrical Characteristics (TA =25ºC, VCC=6V,RL = 8Ω Ω, f = 1KHz, unless otherwise specified) PARAMETER SYMBOL CONDITIONS Quiescent Current ICCQ VIN = 0 Output Power POUT Voltage Gain Av Bandwidth BW Total Harmonic Distortion THD Power Supply Rejection Ratio PSRR Input Resistance Input Bias Current RIN IBIAS MIN TYP MAX 4 8 VCC=6V, THD=10% 250 325 VCC=9V, THD=10% 500 700 UNITS mA mW Pins 1and 8 Open 26 10µF from Pin 1 to 8 46 Pins 1 and 8 Open 10µF from Pin 1 to 8 Pout=125mW, Pins 1 and 8 Open Cbypass=10µF, Pins 1 and 8 Open, Referred to output 300 60 KHz 0.2 % 50 dB 50 250 kΩ nA Pins 2 and 3 Open dB • 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 Bass Boost Amplifier with Gain = 200 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 •