SM8143A Datasheet | Nippon Precision Circuits Inc

OVERVIEW The SM8143A 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. The EL drive frequency and coil drive frequency can be controlled independently, making the driver circuit optimizable to match application requirements. A microcontroller interface pin (ENA) is provided, which can be used to control the EL driver ON/OFF function. The device is available in 16-pin VSOP packages. FEATURES s s s PINOUT (Top view) s s s s s Dedicated EL driver 1.6 to 5.5 V supply voltage 150m A maximum operating current (VDD = 3.0V, Ta ≤ 70°C) 3.5Ω typical output resistance 200 Vp-p maximum EL driver voltage- 31 to 1500 Hz EL drive frequency range- High voltage CMOS Process 16-pin VSOP plastic package N.C. CHV N.C. LDR N.C. VSS N.C. OCL N.C. OUT1 N.C. OUT2 N.C. VDD ENA 8143AV - : Adjustable with external resistance. APPLICATIONS s s s Hand held PC, Palm size PC Mobile IT equipment White EL PACKAGE DIMENSIONS (Unit : mm) ORDERING INFORMATION D e vice SM8143AV P ackag e 16-pin V S O P 4.4 0.2 6.4 0.2 0.275TYP 5.1 0.2 - + 0.1 0.05 0 10 0.10 0.22 - 0.05 + 0.10 0.10 0.05 1.15 0.1 0.12 M 0.5 0.2 NIPPON PRECISION CIRCUITS- 1 BLOCK DIAGRAM EL sheet < 80cm2 OUT1 OUT2 Switching Circuit Boosting...