FEATURES
OVERVIEW
The SM8140A is designed for using as EL (Electronic Luminescence) sheet driver require very low external parts counts, this result that very compact and thin EL driver units can be made. Also this device has the features to use in wider range of applications demanding low quiescent cur rent, low supply voltages, low operating supply currents, simple brightness control and low EMI (Electro-Magnetic Interference) emission due to the inherent smooth driver wave forms.
FEATURES
■ Specially providing EL driver functions
■ Non-transformer for compact outline
■ Bipolar driving for high power efficiency
■ Very low noise smooth driver wave forms
■ Brightness control with driving frequency change (An external resistance determines the driving frequency)
■ Low power consumption by quiescent current control
■ ON-chip high voltage output MOS transistor
■ Large EL sheet (Exceeding 100 cm2) drivable
■ supply voltage VDD = 2.4V to 3.6V or 5.0V
■ 1.5V and 3V power applicable (Refer to APPLICATION HINTS)
■ Maximum output driver voltage:200VP − P
■ Typical driver frequency:250Hz
■ 14 pin SSOP
■ chip form
Carl Weller started the Weller Electric Co. in Easton, PA in 1945 with the invention of the soldering gun. He was looking for a way to service the rapidly growing radio repair market. That invention was followed by the first soldering iron in 1950, followed by the first temperature controlled soldering iron in 1976.
Weller expanded into Europe in 1959. Throughout it's history, Weller has continually developed forward looking products for the consumer and industrial markets.
Weller's commitment to technology is evidenced by the seven person R&D team, with numerous patents and awards to their credit.
The Weller University training center in Apex, NC, was established in 2007. Training is provided for over 100 people per year.