INTERNAL CLOCK GENERATION
STAND-BY FUNCTION
VOLTAGE SET-UP CONVERSION FUNCTION
ANTI-RADIATION TRAPEZOIDAL WAVE FOR
E.L. DISPLAY DRIVING
CONSTANT CURRENT CHARGE/DISCHARGE
OF E.L. DISPLAY
2-STEP BRIGHTNESS CONTROL (NORMAL
OR DIMMED LUMINANCE)
PROTECTIONS WITH AUTOMATIC RESET:
- COIL-SWITCHING MOS OVERCURRENT
- CHIP OVERTEMPERATURE

DESCRIPTION
The TDA7475 is a new BCD OFF-LINE technology
device intended for EL display lighting in carradio
applications. Time-extended luminance is
achieved by driving the display with constant-current
pulses, which will automatically compensate
for the ageing-related capacitance loss by providing
more elevated voltage pulses.