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Lamp driver delivers programmable output voltage

Posted: 20 Jul 2009 ?? ?Print Version ?Bookmark and Share

Keywords:driver IC? EL lamp? analog?

D392A lamp driver

The Durel Division of Rogers Corp. has introduced the D392A, the latest addition to its high-performance electroluminescent (EL) lamp driver ICs. The D392A EL lamp driver delivers the programmable output voltages needed to power a wide range of EL lamps, including in portable applications such as cellphones, data organizers and PDAs, remote controls, monochrome LCDs, and DFLX EL keypad lamps.

Operating with supply currents ranging from 16mA to 35mA and a minimum enable voltage of 1.3V, the high-efficiency EL lamp driver generates typical peak-to-peak output voltages of 170V to 230V, with maximum rating of 250V peak-to-peak. It uses patented wave-shaping technology with slew-rate control to produce clean, low-noise output voltage waveforms for noise-sensitive applications.

Durel's D392A EL lamp driver, which supports a wide range of lamp frequencies, incorporates a unique dimming feature which can be controlled through discrete components, an analog voltage or a PWM signal. The robust lamp driver IC features a high 15kV ESD (Human Body Model) rating and output over-voltage protection for high reliability in a wide range of applications. The lamp driver is compatible with external clocks and supplied in an RoHS-compliant (Pb-free) 14-pin DFN package.

The easy-to-use D392A lamp driver IC can be implemented in most practical circuits with low-profile inductors and a few other passive components. In addition, designer's kits for the D392A, complete with evaluation board, are also available. The lamp driver IC is rated for operating temperatures from -40C to +85C and storage temperatures from -55C to +150C.

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