OVERVIEW

The SM8144B is a transformer-less electroluminescent (EL) driver IC, capable of driving displays up to 80 cm2 in size. It is a high-efficiency driver that features revised coil switching transistor ON resistance and output circuit configuration to reduce loss, all in a compact package. A microcontroller interface pin (ENA) is provided, which can be used to control the EL driver ON/OFF function. The device is available in 8-pin VSOP packages.

FEATURES

■ Dedicated EL driver

■ 1.6 to 5.5 V supply voltage

■ 100mA maximum operating current

(VDD = 3.0V, Ta ≤ 70°C)

■ 3.5? typical output resistance

■ 200 Vp-p maximum EL driver voltage*

■ 31 to 1500 Hz EL drive frequency range*

■ High voltage CMOS Process

■ 8-pin VSOP plastic package

*: Adjustable with external resistance.

APPLICATIONS

■ Hand held PC, Palm size PC

■ Mobile IT equipment

■ White EL