The SP4428 is a high voltage output DC-AC converter that can operate from a single 1.5 VDC power supply. The SP4428 is capable of supplying 200 VPP (typical), making it ideal for driving electroluminescent lamps. The device features 1mA (typical) standby current, for use in low power portable products. One external inductor is required to generate the high voltage charge, and one external capacitor is used to produce a clock signal that generates the coil and lamp frequencies. The SP4428 is ideal for PDAs, pagers, and other low power portable applications using LCDs in dim or low light environments. The SP4428 is offered in an 8-pin narrow SOIC. For delivery in die form, please consult the factory.
TA= +25°C unless otherwise noted
VDD..............................................................................................................5V
Input Voltages/Currents
HON (pin1).......................................................................-0.5V to (VDD+0.5V)
COIL (pin3)..........................................................................................100mA
Lamp Outputs......................................................................................230VPP
Storage Temperature...........................................................-65°C to +150°C
Power Dissipation Per Package
8-pin NSOIC (derate 6.14mW/ above +70)...................................500mW
Required Field 
