Vacuum Fluorescent Display Filament Driver



The LM9022 is a bridged power amplifier capable of delivering typically 2W of continuous average power into a 10Ω filament load when powered by a 5V power supply.

To conserve power in portable applications, the LM9022's micropower shutdown mode (IQ = 0.6µA, typ) is activated when VDD is applied to the SHUTDOWN pin.

Additional LM9022 features include thermal shutdown protection, unity-gain stability, and external gain set.


  • No Transformers Required
  • SOIC or PDIP Packaging

Key Specifications

  • IDD During Shutdown: 0.6µA (typ)
  • Thermal Shutdown Protection

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