LM384 5-W Audio Power Amplifier | TI.com

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5-W Audio Power Amplifier

5-W Audio Power Amplifier - LM384


The LM384 is a power audio amplifier for consumer applications. In order to hold system cost to a minimum, gain is internally fixed at 34 dB. A unique input stage allows ground referenced input signals. The output automatically self-centers to one-half the supply voltage.

The output is short-circuit proof with internal thermal limiting. The package outline is standard dual-in-line. A copper lead frame is used with the center three pins on either side comprising a heat sink. This makes the device easy to use in standard p-c layout.

Uses include simple phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radio and sound projector systems. See SNAA086 for circuit details.


  • Wide Supply Voltage Range: 12V to 26V
  • Low Quiescent Power Drain
  • Voltage Gain Fixed at 50
  • High Peak Current Capability: 1.3A
  • Input Referenced to GND
  • High Input Impedance: 150kΩ
  • Low Distortion: 0.25% (PO=4W, RL=8Ω)
  • Quiescent Output Voltage is at One Half of the Supply Voltage
  • 14-Pin PDIP Package

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Part number Order Audio input type Architecture Speaker channels (Max) Power stage supply (Min) (V) Power stage supply (Max) (V) Output power (W) Load (Min) (ohms) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) PSRR (dB) Operating temperature range (C) Rating
LM384 Order now Analog Input     Class-AB     Mono     12     26     5     4     0.25     8.5     Hardware     Open     12     26     31     0 to 70     Catalog