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