OVERVIEW

The SM8142 is a transformer-less electroluminescent (EL) sheet lamp driver, capable of driving sheets up to 30 cm2 in size. It employs a high-efficiency driver output circuit configuration to control power dissipation. It is available in ultra-small 8-pin SON (Small Outline Non-leaded) packages*, making possible the construction of small, thin, low-power driver units.

FEATURES

■ Dedicated EL driver

■ Noise-less smooth drive waveform

■ High-efficiency output circuit

■ Two oscillator circuits built-in (SM8142A)

■ Stand-by function (SM8142B)

■ Stable temperature characteristics

■ Ultra-small package

■ 1.6 to 5.5 V supply voltage

■ 0.3 mA typ. (VDD = 3.0 V) current consumption

(excluding coil current)

■ 200 Vp-p maximum EL driver voltage

■ 31 to 1000 Hz EL drive frequency range

■ 0.22 mH minimum coil inductance