IMP803 Datasheet (IMP Inc) - HIGH-VOLTAGE EL LAMP DRIVER

IMP803, HIGH-VOLTAGE EL LAMP DRIVER

Pin Number 1 2 3 4 5 6 Name VDD RSW-OSC CS LX GND VB Function Positive voltage supply for the IMP803.

Inductor L may be connected here or to a separate unregulated supply.

Switch-mode resistor pin.

Switching frequency is determined by an external resistor, RSW.

Boost converter storage capacitor.

IMP803 POWER MANAGEMENT High-Voltage EL Lamp Driver The IMP803 is an Electroluminescent (EL) lamp driver with the four EL lamp driving functions on-chip.

These are the switch-mode power supply, its high-frequency oscillator, the high-voltage H-bridge lamp driver and its low-frequency oscillator.

The IMP803 drives EL lamps of up to 30nF capacitance to high brightness; EL lamps with capacitances greater than 30nF can be driven, but will be lower in light output.

The typical regulated output volta

IMP803 Features

* N Low Power: 420µA typical VDD current N Wide operating voltage range - from 2.0V to 6.5V N 180V peak-to-peak typical AC output voltage N Large output load capability - drive lamps with more than 30nF capacitance N Adjustable output lamp frequency for control of lamp color, lamp life, and power cons