Low Noise, High Voltage EL Lamp Driver IC

The Supertex HV857 is a high voltage driver designed for driving Electroluminescent (EL) lamps of up to 5 square inches. 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/GND. The HV857 has two internal Oscillators a switching MOSFET and a high voltage EL lamp driver. The frequency for the switching MOSFET is set by an external resistor connected between the RSW-Osc pin and the supply pin VDD. The EL lamp driver frequency is set by an external resistor connected between REL- Osc pin and VDD pin. An external inductor is connected between the LX and VDD pins or V for split supply applications. A 0.003- IN 0.1F capacitor is connected between CS and ground. The EL lamp is connected between VA and VB. By Supertex, Inc.
HV857 's PackagesHV857 's pdf datasheet

HV857 Pinout, Pinouts
HV857 pinout,Pin out
This is one package pinout of HV857,If you need more pinouts please download HV857's pdf datasheet.

HV857 Application circuits
HV857 circuits
This is one application circuit of HV857,If you need more circuits,please download HV857's pdf datasheet.

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