Microchip Technology HV833MG-G

Description
The HV833 is a high voltage driver designed for driving EL lamps of up to 35nF. It operates with an input supply voltage range of 1.8 to 6.5V and uses a single inductor and a minimum number of passive components. The nominal regulated output voltage applied to the EL lamp is approximately 90V. The chip can be enabled/disabled by connecting a resistor between the RSW-Osc pin and the VDD/GND pins.
The HV833 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 VDD supply pin. The EL lamp driver frequency is set by an external resistor connected between the REL-Osc pin and the VDD pin. An external inductor is connected between the LX pin and VDD or VIN pin. A 0.003-0.1uF capacitor is connected between the CS pin and the GND pin. The EL lamp is connected between the VA pin and the VB pin.

Features
1.8 to 6.5V operating supply voltage
DC to AC conversion
Separately adjustable lamp and converter frequency
Output voltage regulation
Enable/disable function
Patented output timing for high efficiency
<100nA shutdown current
Split supply capability
LCD backlighting

Applications
Portable transceivers
Remote control units
Calculators
PDAs
Global Positioning Systems (GPS)