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LM9022
Vacuum Fluorescent Display Filament Driver
LM9022
Vacuum Fluorescent Display Filament Driver
General DescriptionThe LM9022isa bridged power amplifier capableof deliv-
ering typically 2Wof continuous average power intoa 10Ω
filament load when poweredbya5V power supply. conserve powerin portable applications, the LM9022’s
micropower shutdown mode(IQ= 0.6µA, typ)is activated
when VDDis appliedto the SHUTDOWN pin.
Additional LM9022 features include thermal shutdown pro-
tection, unity-gain stability, and external gain set.
Key Specifications IDD during shutdown 0.6µA (typ) Thermal Shutdown Protection
Features No transformers required SOor DIP packaging
Applications VCR/DVD Displays RADIO/TUNER Displays
Typical Application TA= 25˚C, VDD= 5V, unless otherwise specified.
Connection Diagram
MSOP, Small Outline, and DIP PackageTop View
Order Number LM9022Mor LM9022N
See NS Package Number M08Aor N08E
FIGURE1. Typical Application Circuit
July 2002
LM9022
acuum
Fluorescent
Display
Filament
Driver
