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SP4501NEB Datasheet(PDF) 5 Page - Sipex Corporation |
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SP4501NEB Datasheet(HTML) 5 Page - Sipex Corporation |
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5 / 13 page  11-14-00 SP4501 EL Plus Piezo Driver © Copyright 2000 Sipex Corporation 5 appear more like a square wave. Printed Circuit Board Layout Sugges- tions The EL driver's high-frequency operation makes PCB layout important for minimizing electrical noise. Keep the IC's GND pin and the ground leads of C1 and C INT less than 0.2in (5mm) apart. Also keep the connections to the COIL pin as short as possible. To maximize output power and efficiency and minimize output ripple volt- age, use a ground plane and solder the IC's VSS pin directly to the ground plane. EL Lamp Driver Design Challenges There are many variables which can be opti- mized for specific applications. The amount of light emitted is a function of the voltage applied to the lamp, the frequency at which is applied, the lamp material, the lamp size, and the inductor used. Sipex supplies characterization charts to aid the designer in selecting the optimum circuit configuration. Sipex will perform customer application evalu- ations, using the customer's actual EL lamp to determine the optimum operating conditions for specific applications. For customers consider- ing an EL backlighting solution for the first time, Sipex is able to provide retrofits to non-backlit products for a thorough electrical and cosmetic evaluation. Please contact your local Sipex sales Representative or the Sipex factory directly to initiate this valuable service. |
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