Vacuum Fluorescent Display Filament Driver
LM9022 Vacuum Fluorescent Display Filament Driver
July 2002
LM9022 Vacuum Fluorescent Display Filament Driver
General ...
Description
LM9022 Vacuum Fluorescent Display Filament Driver
July 2002
LM9022 Vacuum Fluorescent Display Filament Driver
General Description
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.
Key Specifications
n IDD during shutdown n Thermal Shutdown Protection 0.6µA (typ)
Features
n No transformers required n SO or DIP packaging
Applications
n VCR/DVD Displays n RADIO/TUNER Displays
Typical Application
TA = 25˚C, VDD = 5V, unless otherwise specified.
20021501
FIGURE 1. Typical Application Circuit
Connection Diagram
MSOP, Small Outline, and DIP Package
20021502
Top View Order Number LM9022M or LM9022N See NS Package Number M08A or N08E
© 2002 National Semiconductor Corporation
DS200215
www.national.com
LM9022
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Supply Temperature Input Voltage Power Dissipation (Note 3) ESD Susceptibility (Note 4) ESD Susceptibility (Note 5) Junction Temperature Soldering Information Small Outline Package Vapor P...
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