SFWB260JF Endicott Research Group, Inc., SFWB260JF Datasheet - Page 3

• Manufacturer Part Number: SFWB260JF
• Description: Power Modules
• Manufacturer: Endicott Research Group, Inc.

Application Information
The SFWB series inverter is designed to power two cold cathode fluorescent lamps from a wide input voltage source. Enabling
the inverter is accomplished by applying a voltage greater than V
An analog voltage is applied to the Control pin to change brightness. Figure 1 shows how to connect the inverter for analog
dimming operation. Graph 1 shows the relationship of brightness to control voltage.
As with all inverters, it is important to take notice that the voltage present at the output pins is quite high and requires special
care to be taken when integrating into the final application. The inverter should not be mounted closer than 0.180" (4.6mm) from
any other conductive material. In general, the mounting hardware should be nonconductive. The exposed high voltage trans-
former, capacitor and connector leads are coated so as to provide reliable operation at altitudes up to 10,000 feet.
To improve the electrical efficiency of the overall application, the input harness cabling should be less than 12 inches (30 cm).
The cable assembly between the inverter and the display is best kept below 4 inches (10 cm). If there are any questions or
concerns, please feel free to contact ERG for exceptions or recommendations.
Premature inverter shutdown may occur if the required power up sequence is not adhered to.
No specific power down sequence is necessary.
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1. Set Vin, Enable and Control to 0(zero) Vdc.
2. Apply Vin power.
3. Apply Enable signal.
4. Apply and adjust control signal for desired brightness.
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REQUIRED POWER UP SEQUENCE
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minimum to the Enable pin of the inverter.
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page 3 of 4.