The HV857L is a low noise, high voltage driver?designed for driving Electroluminescent (EL) lamps of up to five?square inches. It is the low noise version of the EL lamp driver?HV857. The input supply voltage range is from 1.8V to 5.0V. The?device uses a single inductor and a minimum number of passive?components. The nominal regulated output voltage that is applied?to the EL lamp is ±95V. The chip can be enabled/disabled by?connecting the resistor on RSW-Osc to VDD/ground.?The HV857L has two internal oscill